SECURITIES AND EXCHANGE COMMISSION
                     Washington, D.C.  20549
                                
                                                
                          SCHEDULE 13D
                                                
   Under the Securities Exchange Act of 1934 (Amendment No. 4)
                                
                           VIACOM INC.
                        (Name of Issuer)
                                
                        
         Class A Common Stock, Par Value $0.01 Per Share
                 (Title of Class of Securities)
                                
                                                
                           925524100                  
                         (CUSIP Number)
                                                
                                                
                                                
              James E. McKee, Gabelli Funds, Inc.,
     One Corporate Center, Rye, NY 10580-1434 (914) 921-5294
    (Name, Address and Telephone Number of Person Authorized
             to Receive Notices and Communications)
                                
                                                
                     December 22, 1997                     
     (Date of Event Which Requires Filing of this Statement)
                                

If the filing person has previously filed a statement on Schedule
13G to report the acquisition which is the subject of this Schedule
13D, and is filing this Schedule because of Rule 13d-1(b)(3) or
(4), check the following box:
                                                        ____     
                                                       /___/ 


_________________________________________________________________

CUSIP No. 925524100                                        13D
_________________________________________________________________
(1)  NAMES OF REPORTING PERSONS 
      I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
      Gabelli Funds, Inc.            I.D. No. 13-3056041
_________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
                                                       ____
                                                  (a) /___/
                                                       ____
                                                  (b) /___/
_________________________________________________________________
(3)  SEC USE ONLY
_________________________________________________________________
(4)  SOURCE OF FUNDS*
      WC, OO-Funds of investment company clients
_________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
     REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)          _____
                                                     /    /
_________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION
      New York
_________________________________________________________________ 
                                        : (7) SOLE VOTING POWER
                                        :     40,000 (Item 5)
                                        :________________________
                                        : (8) SHARED VOTING POWER
 NUMBER OF SHARES BENEFICIALLY          :     2,065,800 (Item 5) 
 OWNED BY EACH REPORTING                :________________________
 PERSON WITH                            : (9) SOLE DISPOSITIVE 
                                        :     POWER
                                        :     2,065,800 (Item 5)
                                        :________________________
                                        :(10) SHARED DISPOSITIVE 
                                        :     POWER
                                        :     None  (Item 5)  
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     2,105,800 (Item 5)
_________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
     EXCLUDES CERTAIN SHARES*                         _____
                                                     /  x /
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
     3.04%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
      HC, IA, CO
_________________________________________________________________
              *SEE INSTRUCTIONS BEFORE FILLING OUT!  

________________________________________________________________

CUSIP No. 925524100                                        13D
_________________________________________________________________
(1)  NAMES OF REPORTING PERSONS 
      I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
      GAMCO Investors, Inc.              I.D. No. 13-2951242
_________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
                                                       ____
                                                  (a) /___/
                                                       ____
                                                  (b) /___/
_________________________________________________________________
(3)  SEC USE ONLY
_________________________________________________________________
(4)  SOURCE OF FUNDS*
      OO-Funds of investment advisory clients
_________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
     REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)          _____
                                                     /  x /
_________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION
      New York
_________________________________________________________________ 
                                        : (7) SOLE VOTING POWER
                                        :     4,363,632 (Item 5)
                                        :________________________
                                        : (8) SHARED VOTING POWER
 NUMBER OF SHARES BENEFICIALLY          :     None 
 OWNED BY EACH REPORTING                :________________________ 
 PERSON WITH                            : (9) SOLE DISPOSITIVE 
                                        :     POWER
                                        :     4,523,132 (Item 5)
                                        :________________________ 
                                        :(10) SHARED DISPOSITIVE 
                                        :     POWER
                                        :     None  
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
    4,523,132 (Item 5)
_________________________________________________________________

(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
     EXCLUDES CERTAIN SHARES*                         ____
                                                     /___/
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
     6.50%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
      IA, CO
_________________________________________________________________
              *SEE INSTRUCTIONS BEFORE FILLING OUT!   

________________________________________________________________

CUSIP No. 925524100                                        13D
_________________________________________________________________
(1)  NAMES OF REPORTING PERSONS 
      I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
      ALCE Partners, L.P.                 I.D. No. 13-3782067
_________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
                                                       ____
                                                  (a) /___/
                                                       ____
                                                  (b) /___/
_________________________________________________________________
(3)  SEC USE ONLY
_________________________________________________________________
(4)  SOURCE OF FUNDS*
     WC                                                 
_________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
     REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)          ____
                                                     /___/
_________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION
      Delaware 
_________________________________________________________________ 
                                        : (7) SOLE VOTING POWER
                                        :     8,000 (Item 5)
                                        :________________________
                                        : (8) SHARED VOTING POWER
 NUMBER OF SHARES BENEFICIALLY          :     None  
 OWNED BY EACH REPORTING                :________________________ 
 PERSON WITH                            : (9) SOLE DISPOSITIVE 
                                        :     POWER
                                        :     8,000 (Item 5)
                                        :________________________ 
                                        :(10) SHARED DISPOSITIVE 
                                        :     POWER
                                        :     None  
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
      8,000 (Item 5)
_________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
     EXCLUDES CERTAIN SHARES*                         ____
                                                     /___/
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
      0.01%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
      PN
_________________________________________________________________

              *SEE INSTRUCTIONS BEFORE FILLING OUT!  

_________________________________________________________________

CUSIP No. 925524100                                        13D
_________________________________________________________________
(1)  NAMES OF REPORTING PERSONS 
      I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
      Gabelli & Company Profit Sharing Plan  I.D. No. 13-3798449
_________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
                                                       ____
                                                  (a) /___/
                                                       ____
                                                  (b) /___/
_________________________________________________________________
(3)  SEC USE ONLY
_________________________________________________________________
(4)  SOURCE OF FUNDS*
      WC                    
_________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
     REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)          ______
                                                     /     /
_________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION
      New York
_________________________________________________________________ 
                                        : (7) SOLE VOTING POWER
                                        :     10,000  (Item 5)
                                        :________________________
                                        : (8) SHARED VOTING POWER
 NUMBER OF SHARES BENEFICIALLY          :     None  (Item 5)
 OWNED BY EACH REPORTING                :________________________ 
 PERSON WITH                            : (9) SOLE DISPOSITIVE 
                                        :     POWER
                                        :     10,000  (Item 5)
                                        :________________________ 
                                        :(10) SHARED DISPOSITIVE 
                                        :     POWER
                                        :     None  (Item 5)
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
      10,000 (Item 5)
_________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
     EXCLUDES CERTAIN SHARES*                         ____
                                                     /___/
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
      0.01%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
      EP
_________________________________________________________________
              *SEE INSTRUCTIONS BEFORE FILLING OUT!  

_________________________________________________________________

CUSIP No. 925524100                                        13D
_________________________________________________________________
(1)  NAMES OF REPORTING PERSONS 
      I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
      Gabelli International Limited  I.D. No. Foreign Corporation
_________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
                                                       ____
                                                  (a) /___/
                                                       ____
                                                  (b) /___/
_________________________________________________________________
(3)  SEC USE ONLY
_________________________________________________________________
(4)  SOURCE OF FUNDS*
      WC 
_________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
     REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)          ____
                                                     /___/
_________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION
      British Virgin Islands
_________________________________________________________________ 
                                        : (7) SOLE VOTING POWER
                                        :     23,000 (Item 5)
                                        :________________________
                                        : (8) SHARED VOTING POWER
 NUMBER OF SHARES BENEFICIALLY          :     None  
 OWNED BY EACH REPORTING                :________________________ 
 PERSON WITH                            : (9) SOLE DISPOSITIVE 
                                        :     POWER
                                        :     23,000 (Item 5)
                                        :________________________ 
                                        :(10) SHARED DISPOSITIVE 
                                        :     POWER
                                        :     None  
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     23,000  (Item 5)
_________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
     EXCLUDES CERTAIN SHARES*                         ____
                                                     /___/
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
      0.03%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
      CO
_________________________________________________________________

              *SEE INSTRUCTIONS BEFORE FILLING OUT!

_________________________________________________________________

CUSIP No. 925524100                                        13D
_________________________________________________________________
(1)  NAMES OF REPORTING PERSONS 
      I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
      Gabelli International II Limited  I.D. No. Foreign         
      Corporation
_________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
                                                       ____
                                                  (a) /___/
                                                       ____
                                                  (b) /___/
_________________________________________________________________
(3)  SEC USE ONLY
_________________________________________________________________
(4)  SOURCE OF FUNDS*
      WC 
_________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
     REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)          ____
                                                     /___/
_________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION
      British Virgin Islands
_________________________________________________________________ 
                                        : (7) SOLE VOTING POWER
                                        :     None  (Item 5)
                                        :________________________
                                        : (8) SHARED VOTING POWER
 NUMBER OF SHARES BENEFICIALLY          :     None  
 OWNED BY EACH REPORTING                :________________________ 
 PERSON WITH                            : (9) SOLE DISPOSITIVE 
                                        :     POWER
                                        :     None  (Item 5)
                                        :________________________ 
                                        :(10) SHARED DISPOSITIVE 
                                        :     POWER
                                        :     None  
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
      None  (Item 5)
_________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
     EXCLUDES CERTAIN SHARES*                         ____
                                                     /___/
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
      0.00%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
      CO
_________________________________________________________________

              *SEE INSTRUCTIONS BEFORE FILLING OUT!

________________________________________________________________

CUSIP No. 925524100                                        13D
_________________________________________________________________
(1)  NAMES OF REPORTING PERSONS 
      I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
      Gabelli Performance Partnership L.P.   I.D. No. 13-3396569
_________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
                                                       ____
                                                  (a) /___/
                                                       ____
                                                  (b) /___/
_________________________________________________________________
(3)  SEC USE ONLY
_________________________________________________________________
(4)  SOURCE OF FUNDS*
     WC     
_________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
     REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)          ____
                                                     /___/
_________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION
      Delaware 
_________________________________________________________________ 
                                        : (7) SOLE VOTING POWER
                                        :     26,000 (Item 5)
                                        :________________________
                                        : (8) SHARED VOTING POWER
 NUMBER OF SHARES BENEFICIALLY          :     None  
 OWNED BY EACH REPORTING                :________________________ 
 PERSON WITH                            : (9) SOLE DISPOSITIVE 
                                        :     POWER
                                        :     26,000 (Item 5)
                                        :________________________ 
                                        :(10) SHARED DISPOSITIVE 
                                        :     POWER
                                        :     None  
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     26,000 (Item 5)
_________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
     EXCLUDES CERTAIN SHARES*                         ____
                                                     /___/
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
      0.04%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
      PN
_________________________________________________________________

              *SEE INSTRUCTIONS BEFORE FILLING OUT!

________________________________________________________________

CUSIP No. 925524100                                        13D
_________________________________________________________________
(1)  NAMES OF REPORTING PERSONS 
      I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
      Gabelli Multimedia Partners, L.P.     I.D. No. 13-3782066
_________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
                                                       ____
                                                  (a) /___/
                                                       ____
                                                  (b) /___/
_________________________________________________________________
(3)  SEC USE ONLY
_________________________________________________________________
(4)  SOURCE OF FUNDS*
      WC                                                         
________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
     REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)          ____
                                                     /___/
_________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION
      Delaware 
_________________________________________________________________ 
                                        : (7) SOLE VOTING POWER
                                        :    2,500 (Item 5)
                                        :________________________
                                        : (8) SHARED VOTING POWER
 NUMBER OF SHARES BENEFICIALLY          :     None  
 OWNED BY EACH REPORTING                :________________________ 
 PERSON WITH                            : (9) SOLE DISPOSITIVE 
                                        :     POWER
                                        :    2,500 (Item 5)
                                        :________________________ 
                                        :(10) SHARED DISPOSITIVE 
                                        :     POWER
                                        :     None  
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
      2,500 (Item 5)
_________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
     EXCLUDES CERTAIN SHARES*                         ____
                                                     /___/
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
      0.00%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
      PN
_________________________________________________________________

              *SEE INSTRUCTIONS BEFORE FILLING OUT!

_________________________________________________________________

CUSIP No. 925524100                                        13D
_________________________________________________________________
(1)  NAMES OF REPORTING PERSONS 
      I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
      Gemini Capital Management Ltd. 
_________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
                                                       ____
                                                  (a) /___/
                                                       ____
                                                  (b) /___/
_________________________________________________________________
(3)  SEC USE ONLY
_________________________________________________________________
(4)  SOURCE OF FUNDS*
      00-Funds of clients
_________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
     REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)          ____
                                                     /___/
_________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION
      Bermuda                     
_________________________________________________________________ 
                                        : (7) SOLE VOTING POWER
                                        :    12,500 (Item 5)
                                        :________________________
                                        : (8) SHARED VOTING POWER
 NUMBER OF SHARES BENEFICIALLY          :     None  
 OWNED BY EACH REPORTING                :________________________ 
 PERSON WITH                            : (9) SOLE DISPOSITIVE 
                                        :     POWER
                                        :    12,500 (Item 5)
                                        :________________________ 
                                        :(10) SHARED DISPOSITIVE 
                                        :     POWER
                                        :     None  
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     12,500 (Item 5)
_________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
     EXCLUDES CERTAIN SHARES*                         ____
                                                     /___/
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
      0.02%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
      CO
_________________________________________________________________

              *SEE INSTRUCTIONS BEFORE FILLING OUT!

_________________________________________________________________

CUSIP No. 925524100                                        13D
_________________________________________________________________
(1)  NAMES OF REPORTING PERSONS 
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
     Gabelli Foundation, Inc.          I.D. No. 94-2975159
_________________________________________________________________ 
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
                                                       ____
                                                  (a) /___/
                                                       ____
                                                  (b) /___/
_________________________________________________________________
(3)  SEC USE ONLY
_________________________________________________________________
(4)  SOURCE OF FUNDS*
      WC
_________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
     REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)          ____
                                                     /    /
_________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION
      NV 
_________________________________________________________________ 
                                        : (7) SOLE VOTING POWER
                                        :     9,000   (Item 5)
                                        :________________________
                                        : (8) SHARED VOTING POWER
 NUMBER OF SHARES BENEFICIALLY          :     None  
 OWNED BY EACH REPORTING                :________________________ 
 PERSON WITH                            : (9) SOLE DISPOSITIVE 
                                        :     POWER
                                        :     9,000   (Item 5)
                                        :________________________ 
                                        :(10) SHARED DISPOSITIVE 
                                        :     POWER
                                        :     None  
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     9,000   (Item 5)
_________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
     EXCLUDES CERTAIN SHARES*                         _____
                                                     /  x /
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
      0.01%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
      00-PRIVATE FOUNDATION
_________________________________________________________________

              *SEE INSTRUCTIONS BEFORE FILLING OUT!

_________________________________________________________________

CUSIP No. 925524100                                        13D
_________________________________________________________________
(1)  NAMES OF REPORTING PERSONS 
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
     Mario J. Gabelli                 
_________________________________________________________________ 
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
                                                       ____
                                                  (a) /___/
                                                       ____
                                                  (b) /___/
_________________________________________________________________
(3)  SEC USE ONLY
_________________________________________________________________
(4)  SOURCE OF FUNDS*
     PF; OO - Funds of Family Partnership
_________________________________________________________________
(5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
     REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)          ____
                                                     /    /
_________________________________________________________________
(6)  CITIZENSHIP OR PLACE OF ORGANIZATION
      USA 
_________________________________________________________________ 
                                        : (7) SOLE VOTING POWER
                                        :     4,000 (Item 5)
                                        :________________________
                                        : (8) SHARED VOTING POWER
 NUMBER OF SHARES BENEFICIALLY          :     None  
 OWNED BY EACH REPORTING                :________________________ 
 PERSON WITH                            : (9) SOLE DISPOSITIVE 
                                        :     POWER
                                        :     4,000 (Item 5)
                                        :________________________ 
                                        :(10) SHARED DISPOSITIVE 
                                        :     POWER
                                        :     None  
_________________________________________________________________
(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     4,000 (Item 5)
_________________________________________________________________
(12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
     EXCLUDES CERTAIN SHARES*                         _____
                                                     /  x /
_________________________________________________________________
(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
      0.01%
_________________________________________________________________
(14) TYPE OF REPORTING PERSON*
      IN
_________________________________________________________________

              *SEE INSTRUCTIONS BEFORE FILLING OUT!

Item 1.   Security and Issuer
          This Amendment No. 4 to Schedule 13D on the Class A
Common Stock of Viacom Inc. (the "Issuer") is being filed on
behalf of the undersigned to amend the Schedule 13D, as amended
(the "Schedule 13D") which was originally filed on February 7,
1997.  Unless otherwise indicated, all capitalized terms used
herein but not defined herein shall have the same meaning as set
forth in the Schedule 13D.

Item 2.   Identity and Background
          This statement is being filed by Mario J. Gabelli ("Mr.
Gabelli") and various entities which he directly or indirectly
controls or for which he acts as chief investment officer.  These
entities, except for Lynch Corporation ("Lynch"), Spinnaker
Industries, Incorporated ("Spinnaker"), Western New Mexico
Telephone Company ("Western New Mexico"), Entoleter, Inc. ("Ento-
leter"),  Lynch Telecommunications Corporation ("Lynch Telecom"),
Lynch Telephone Corporation ("Lynch Telephone") and Inter-Commu-
nity Telephone Company ("Inter-Community") (collectively, "Lynch
and its affiliates"), engage in various aspects of the securities
business, primarily as investment adviser to various institution-
al and individual clients, including registered investment
companies and pension plans, as broker/dealer and as general
partner of various private investment partnerships.  Certain of
these entities may also make investments for their own accounts. 
          The foregoing persons in the aggregate often own
beneficially more than 5% of a class of equity securities of a
particular issuer.  Although several of the foregoing persons are
treated as institutional investors for purposes of reporting
their beneficial ownership on the short-form Schedule 13G, the
holdings of those who do not qualify as institutional investors
may exceed the 1% threshold presented for filing on Schedule 13G
or implementation of their investment philosophy may from time to
time require action which could be viewed as not completely
passive.  In order to avoid any question as to whether their
beneficial ownership is being reported on the proper form and in
order to provide greater investment flexibility and administra-
tive uniformity, these persons have decided to file their benefi-
cial ownership reports on the more detailed Schedule 13D form
rather than on the short-form Schedule 13G and thereby to provide
more expansive disclosure than may be necessary. 
          (a), (b) and (c) - This statement is being filed by one
or more of the following persons: Gabelli Funds, Inc. ("GFI"),
GAMCO Investors, Inc. ("GAMCO"), Gabelli Securities, Inc. ("GS-
I"), Gabelli & Company, Inc. ("Gabelli & Company"), Gabelli
Performance Partnership L.P. ("GPP"), GLI, Inc. ("GLI"), Gabelli
Associates Fund ("Gabelli Associates"), Gabelli Associates
Limited ("GAL"), Gabelli & Company, Inc. Profit Sharing Plan (the
"Plan"), Gabelli International Limited ("GIL"), Gabelli Interna-
tional II Limited ("GIL II"), Gabelli International Gold Fund
Limited ("GIGFL"), ALCE Partners, L.P. ("ALCE"), Gabelli Multime-
dia Partners, L.P. ("Multimedia Partners"), Gemini Capital
Management Ltd. ("Gemini"), Gabelli Foundation, Inc. ("Founda-
tion"), Mr. Gabelli, Lynch, Spinnaker, Western New Mexico,
Entoleter, Lynch Telecom, Lynch Telephone and Inter-Community.
Those of the foregoing persons signing this Schedule 13D are
hereafter referred to as the "Reporting Persons". 
          GAMCO, a wholly-owned subsidiary of GFI, is an invest-
ment adviser registered under the Investment Advisers Act of
1940, as amended ("Advisers Act").  GAMCO is an investment
manager providing discretionary managed account services in the
equity area for employee benefit plans, private investors,
endowments and foundations. 
          Gabelli & Company, a wholly-owned subsidiary of GSI, is
a broker-dealer registered under the Securities Exchange Act of
1934, as amended ("l934 Act"), which as a part of its business
regularly purchases and sells securities for its own account.  
          GLI, a wholly-owned subsidiary of GSI, is the trustee
for the Gabelli-Rosenthal & Partners, L.P. Liquidating Trust.
          Gabelli Associates is a New York limited partnership
whose primary business purpose is risk arbitrage investments. 
GSI and Mr. Gabelli are the general partners of Gabelli Associ-
ates. 
          GAL is a corporation whose primary business purpose is 
risk arbitrage investments.  Shares of GAL's Common Stock will be
offered to persons who are neither citizens nor residents of the 
United States and may be offered to a limited number of U.S.
investors.  GSI is the investment manager of GAL.
          GSI, a majority-owned subsidiary of GFI, is a Delaware 
corporation which as a part of its business regularly purchases
and sells securities for its own account.  It is the immediate
parent of Gabelli & Company.  
          GFI is the ultimate parent company for a variety of
companies engaged in the securities business, each of which is
named above.  In addition, GFI is an investment adviser regis-
tered under the Advisers Act.  GFI is an investment adviser which
presently provides discretionary managed account services for The
Gabelli Equity Trust Inc., The Gabelli Asset Fund, The Gabelli
Growth Fund, The Gabelli Convertible Securities Fund, Inc., The
Gabelli Value Fund Inc., The Gabelli Small Cap Growth Fund, The
Gabelli Equity Income Fund, The Gabelli ABC Fund, The Gabelli
Global Telecommunications Fund, Gabelli Gold Fund, Inc., The
Gabelli Global Multimedia Trust Inc., The Gabelli Global Convert-
ible Securities Fund, Gabelli Capital Asset Fund, Gabelli Inter-
national Growth Fund, Inc. and The Gabelli Global Interactive
Couch Potato Fund (collectively, the "Funds"), which are regis-
tered investment companies.
          The Plan, a qualified employee profit sharing plan,
covers substantially all employees of GFI and its affiliates. 
          GPP, a New York limited partnership, is a limited
partnership whose primary business purpose is investing in
securities.  Mr. Gabelli is the general partner and chief invest-
ment officer of GPP. 
          GIL is a corporation whose primary business purpose is 
investing in a portfolio of equity securities and securities
convertible into, or exchangeable for, equity securities in order
to achieve its investment objective of significant long-term
growth of capital.  Shares of GIL's common stock are offered to
persons who are neither citizens nor residents of the United
States and may be offered to a limited number of U.S. investors. 
The investments of GIL are managed by Mr. Gabelli who is also a
director and Chairman of the Board of Directors of GIL.
          GIL II is a corporation whose business purpose is
investing primarily in a portfolio of equity securities and
securities convertible into, or exchangeable for, equity securit-
ies in order to achieve its investment objective of significant
long-term growth of capital.  Shares of GIL II's common stock are
offered to persons who are neither citizens nor residents of the 
United States and may be offered to a limited number of U.S.
investors.  The investments of GIL II are managed by Mr. Gabelli 
who is also a director and Chairman of the Board of Directors of 
GIL II.
       ALCE is a Delaware investment limited partnership that
seeks long-term capital appreciation primarily through invest-
ments in public and private equity securities.  GSI is a general
partner of ALCE.
       Multimedia Partners is a Delaware investment limited
partnership whose objective is to provide long-term capital
appreciation by investing primarily in public and private multi-
media communications companies.  GSI is a general partner of
Multimedia Partners.
       Gemini is a corporation whose primary business purpose is
to provide advisory services to offshore funds.
       The Foundation is a private foundation. Mr. Gabelli is the
President, a Trustee and the Investment Manager of the Founda-
tion.
       Lynch, an Indiana corporation, is a diversified public
company traded on the American Stock Exchange.  Its subsidiaries 
are engaged in communications, services, and manufactured pro-
ducts.  Spinnaker, a Delaware subsidiary of Lynch, is also a
public company and its stock is traded through the NASDAQ System. 
Spinnaker is a diversified manufacturing firm with major subsid-
iaries in specialty adhesive-backed materials business.  Another
of Lynch's subsidiaries, Western New Mexico, provides telephone
services in a service area in Southwestern New Mexico.  Inter-
Community, which is also a subsidiary of Lynch, provides local
telephone services in an area 40 miles west of Fargo, North
Dakota.   Lynch and Spinnaker actively pursue new business ven-
tures and acquisitions.  Lynch and its affiliates make invest-
ments in marketable securities to preserve capital and maintain
liquidity for financing their business activities and acquisi-
tions (not in the case of Western New Mexico) and are not engaged
in the business of investing, reinvesting, or trading in securi-
ties.  Mr. Gabelli is Chairman of Lynch and owns beneficially
23.52% of the shares of common stock of Lynch. 
          Mr. Gabelli is the majority stockholder and Chairman of
the Board of Directors and Chief Executive Officer of GFI and the
Chief Investment Officer for each of the Reporting Persons other
than Gemini.  GFI, in turn, is the sole stockholder of GAMCO. 
GFI is also the majority stockholder of GSI.  Gabelli & Company
is a wholly-owned subsidiary of GSI.  GLI is a wholly-owned
subsidiary of GSI.  Mr. Marc J. Gabelli is the majority stock-
holder of Gemini.
          The Reporting Persons do not admit that they constitute
a group. 
          GFI, GAMCO, Gabelli & Company and GLI are New York
corporations and GSI is a Delaware corporation, each having its
principal business office at One Corporate Center, Rye, New York 
10580-1434. GPP is a Delaware limited partnership having its
principal business office at 8 Sound Shore Drive, Greenwich,
Connecticut 06830.  Gabelli Associates is a New York limited
partnership having its principal business office at One Corporate
Center, Rye, New York 10580-1434. GAL and GIL are corporations
organized under the laws of the British Virgin Islands having
their principal business office at c/o MeesPierson (Cayman)
Limited, British American Centre, Dr. Roy's Drive-Phase 3, George
Town, Grand Cayman, British West Indies.  GIL II is a corporation
organized under the laws of the British Virgin Islands having
their principal business office at c/o Coutts & Company (Cayman)
Limited, West Bay Road, Grand Cayman, British West Indies. 
Gemini is a Bermuda corporation with its principal business
office at c/o Appleby, Spurling & Kempe, Cedar House, 41 Cedar
Avenue, Hamilton HM12, Bermuda.  The Foundation is a private
foundation having its principal offices at 165 West Liberty
Street, Reno, Nevada 89501. Lynch is an Indiana corporation
having its principal business office at 8 Sound Shore Drive,
Greenwich, CT 06830.  Spinnaker is a Delaware corporation having
its principal business office at 251 Welton Street, Hamden, CT
06511. 
          For information required by instruction C to Schedule
13D with respect to the executive officers and directors of the
foregoing entities and other related persons (collectively,
"Covered Persons"), reference is made to Schedule I annexed
hereto and incorporated herein by reference. 
          (d) and (e) -  On December 8, 1994, the SEC instituted 
and simultaneously accepted offers for the settlement of an
administrative proceeding against Gabelli & Company and GAMCO. 
The order instituting the proceeding included a finding, which
Gabelli & Company and GAMCO neither admitted nor denied, that
they failed to implement and maintain policies and procedures
reasonably designed to prevent the misuse of material, nonpublic
information by not specifically addressing the special circum-
stances that arose from their affiliation with Lynch Corporation,
a public company.  To resolve this matter, Gabelli & Company and
GAMCO agreed to cease and desist from violating Section 15(f) of
the 1934 Act and Section 204A of the Advisers Act, respectively. 
They further agreed to each pay a civil penalty in the amount of
$50,000, and to retain, and adopt the recommendations of, an
independant consultant regarding their Section 15(f) and Section
204A policies and procedures.  
     (f) - Reference is made to Schedule I hereto.  

Item 3.   Source and Amount of Funds or Other Consideration
     Item 3 to Schedule 13D is amended, in pertinent part, as
follows:
          All Reporting Persons used an aggregate of approximate-
ly $29,007,798 to purchase the additional Securities requiring
this Amendment to Schedule 13D.  GAMCO and GFI used approximately
$14,524,902 and $14,482,896, respectively, of funds that were
provided through the accounts of certain of their investment
advisory clients (and, in the case of some of such accounts at
GAMCO, may be through borrowings from client margin accounts) in
order to purchase the additional Securities for such clients.


Item 5.   Interest In Securities Of The Issuer    
     Item 5 to Schedule 13D is amended, in pertinent part, as
follows:
          (a)  The aggregate number and percentage of Securities
to which this Schedule 13D relates is 6,723,932 shares, repre-
senting 9.67% of the 69,535,552 shares outstanding as reported in
the Issuer's most recently filed Form 10-Q for the quarter  ended
September 30, 1997. The Reporting Persons beneficially own those
Securities as follows:
                              Shares of           % of
                              Common              Class of
Name                          Stock               Common  

GFI 
  As Principal                  40,000                0.06%
  As Agent                   2,065,800                2.98%

GAMCO
  As Principal                       0                0.00%
  As Agent                   4,523,132                6.50%

GPP                             26,000                0.04%

GIL                             23,000                0.03%

ALCE                             8,000                0.01%

GIL II                               0                0.00%

Multimedia Partners              2,500                0.00%

Gemini                          12,500                0.02%

The Plan                        10,000                0.01%

The Foundation                   9,000                0.01%

Mr. Gabelli                      4,000                0.01%





          Mr. Gabelli is deemed to have beneficial ownership of the
Securities owned beneficially by each of the foregoing persons and
GFI is deemed to have beneficial ownership of the Securities
beneficially owned by each of the foregoing persons other than Mr.
Gabelli. 
          (b) Each of the Reporting Persons and Covered Persons has
the sole power to vote or direct the vote and sole power to dispose
or to direct the disposition of the Securities reported for it,
either for its own benefit or for the benefit of its investment
clients or its partners, as the case may be, except that: (i) GAMCO
Investors, Inc. does not have authority to vote 159,500 of the
reported shares; (ii) with respect to the 11,800 shares (0.02%) of
Class A Common Stock held by The Gabelli ABC Fund, the 53,000
shares (0.08%) of Class A Common Stock held by The Gabelli Capital
Asset Fund, the 360,000 shares (0.52%) of Class A Common Stock held
by The Gabelli Asset Fund, the 45,000 shares (0.06%) of Class A
Common Stock held by The Gabelli Global Interactive Couch 
Potato(Registered Trademark) Fund, the 4,000 shares (0.01%) of
Class A Common Stock held by The Gabelli Equity Income Fund, the
425,000 shares (0.61%) of Class A Common Stock held by The Gabelli
Equity Trust Inc., the 115,000 shares (0.17%) of Class A Common
Stock held by The Gabelli Global Multimedia Trust Inc., the 2,000
shares (0.00%) of Class A Common Stock held by The Gabelli Global
Telecommunications Fund, the 1,050,000 shares (1.51%) of Class A
Common Stock held by The Gabelli Value Fund, the Proxy Voting
Committee of each of such Fund has taken and exercises in its sole
discretion the entire voting power with respect to the shares by
each of such Fund, until its proxy committee determines otherwise
and, accordingly, GFI has no voting authority with regard to the
shares held by such Funds; and (iii) the power of Mr. Gabelli and
GFI is indirect with respect to Securities beneficially owned
directly by other Reporting Persons. 
          (c) Information with respect to all other transactions in
the Securities which were effected during the past sixty days or
since the most recent filing on Schedule 13D, whichever is less, by
each of the Reporting Persons and Covered Persons is set forth on
Schedule II annexed hereto and incorporated herein by reference. 

Signature
          After reasonable inquiry and to the best of my knowledge
and belief, I certify that the information set forth in this
statement is true, complete and correct. 
Dated:    December 24, 1997
                                   MARIO J. GABELLI                   


                                             
                                   By: ____________________________    
                                       James E. McKee
                                       Attorney-in-Fact

 
                                   GABELLI FUNDS, INC.  
                                   

                                           
                                   By:_________________________
                                      James E. McKee
                                      General Counsel


                                   GAMCO INVESTORS, INC.  
                                   

                                           
                                   By:_________________________
                                      Douglas R. Jamieson  
                                      Executive Vice President


                    

                                   GEMINI CAPITAL MANAGEMENT LTD.

                                   
                                           
                                   By:_________________________
                                      Marc J. Gabelli    
                                      Director
                                      by: James E. McKee
                                          Attorney-in-Fact
                    

                                      

                                   GABELLI PERFORMANCE PARTNERSHIP
                                   

                                           
                                   By:_________________________
                                      Mario J. Gabelli, 
                                      General Partner
                                      by: James E. McKee
                                          Attorney-in-Fact



                                        

                                   GABELLI & COMPANY, INC.
                                   PROFIT SHARING PLAN

                                   
                                           
                                   By:_________________________
                                      Douglas R. Jamieson
                                      Trustee


                                   GABELLI INTERNATIONAL LIMITED  

                                   
                                           
                                   By:_________________________
                                      Mario J. Gabelli, Chairman
                                      and Investment Manager
                                      by: James E. McKee
                                          Attorney-in-Fact






                                   GABELLI MULTIMEDIA PARTNERS, L.P.


                                           
                                   By:_____________________________
                                      Gabelli Securities, Inc.
                                      General Partner
                                      by: James E. McKee
                                          Secretary




                                   GABELLI INTERNATIONAL II LIMITED



                                           
                                   By:_______________________________
                                      Mario J. Gabelli, Chairman
                                      and Investment Manager
                                      by: James E. McKee
                                          Attorney-in-Fact



                                   ALCE PARTNERS, L.P.


                                           
                                   By:_______________________________
                                      Gabelli Securities, Inc.
                                      General Partner
                                      by: James E. McKee
                                          Secretary

                                   GABELLI FOUNDATION, INC.



                                   By:_____________________________
                                      Mario J. Gabelli, President
                                      by:  James E. McKee
                                           Attorney-in-Fact
Schedule I


              Information with Respect to Executive
            Officers and Directors of the Undersigned 

          Schedule I to Schedule 13D is amended, in pertinent part, as
follows:
          The following sets forth as to each of the executive officers
and directors of the undersigned: his name; his business address; and
his present principal occupation or employment and the name, principal
business and address of any corporation or other organization in which
such employment is conducted.  Unless otherwise specified, the principal
employer of each such individual is Gabelli Funds, Inc., Gabelli &
Company, Inc., or GAMCO Investors, Inc., the business address of each of
which is One Corporate Center, Rye, New York 10580, and each such
individual identified below is a citizen of the United States.  To the
knowledge of the undersigned, during the last five years, no such person
has been convicted in a criminal proceeding (excluding traffic viola-
tions or similar misdemeanors), and no such person was a party to a
civil proceeding of a judicial or administrative body of competent
jurisdiction as a result of which he was or is subject to a judgment,
decree or final order enjoining future violations of, or prohibiting or
mandating activities subject to, federal or state securities law or
finding any violation with respect to such laws except as reported in
Item 2(d) of this Schedule 13D. 


Gabelli Funds, Inc. 

Directors: 

     Mario J. Gabelli*

     Richard B. Black              Chairman of Raster Image
                                   Processing Systems; Chairman
                                   ECRM; Director of Archetype
                                   and Oak Technology; Director
                                   of The Morgan Group, Inc.;
                                   General Partner of KBA Part-  
                                   ners, Parker Plaza
                                   400 Kelby Street,
                                   Fort Lee, NJ 07029

     Charles C. Baum               Chairman, Director and Chief Execu-
                                   tive Officer of The Morgan Group,
                                   Inc.;
                                   Secretary & Treasurer
                                   United Holdings              
                                   2545 Wilkens Avenue
                                   Baltimore, MD  21223

     Dr. Eamon M. Kelly            President
                                   Tulane University
                                   218 Gibson Hall
                                   6823 St. Charles Avenue
                                   New Orleans, LA  70118

     Marc J. Gabelli               Vice President


Officers:

     Mario J. Gabelli              Chairman, Chief Executive
                                   Officer and Chief Investment
                                   Officer
     
     Stephen G. Bondi              Executive Vice President,
                                   Chief Financial and Admin-         
                                   istrative Officer                  
                         
     James E. McKee                Vice President, General 
                                   Counsel and Secretary

_____________________

     *    Mr. Gabelli is the Chairman, Chief Executive Officer and Chief
Investment Officer of Gabelli Funds, Inc. and of GAMCO Investors, Inc.;
Director/Trustee of all registered investment companies advised by
Gabelli Funds, Inc.; Chairman and Chief Executive Officer of Lynch
Corporation. 

GAMCO Investors, Inc.

Directors:
     
     Mario J. Gabelli
     Douglas R. Jamieson
     Joseph R. Rindler, Jr.
     Regina M. Pitaro
     F. William Scholz, II

Officers:
     
     Mario J. Gabelli              Chief Executive Officer 
                                   and Chief Investment Officer

     Joseph R. Rindler, Jr.        Chairman

     Douglas R. Jamieson           Executive Vice President 

     Stephen G. Bondi              Vice President

     James E. McKee                Vice President, General Counsel
                                   and Secretary


Gabelli Securities, Inc.

Directors:

     Robert W. Blake               President of W.R. Blake
                                   & Sons, Inc.
                                   196-20 Northern Boulevard
                                   Flushing, NY  11358

     Douglas G. DeVivo             General Partner of ALCE
                                   Partners, L.P.
                                   One First Street, Suite 16
                                   Los Altos, CA  94022

     Ronald L. Gallatin            Consultant
                                   Gabelli Securities, Inc.
                                   One Corporate Center
                                   Rye, NY  10580

     Francine Sommer               Chief Executive Officer of
                                   General Partner of Gabelli
                                   Multimedia Partners, L.P.
                                   One Corporate Center
                                   Rye, NY  10580

     Joseph R. Rindler, Jr.        See above









Officers:
     
     Gary P. Watson                Executive Vice President,
                                   Chief Financial and Admin-
                                   istrative Officer


     Stephen G. Bondi              Vice President

     James E. McKee                Secretary


Gabelli & Company, Inc.

Directors:

     James G. Webster, III         Chairman 
     
     Stephen G. Bondi              See above

     Donald C. Jenkins             Director of Research

Officers:

     James G. Webster, III         Chairman 

     Stephen G. Bondi              Vice President 

     Bruce N. Alpert               Vice President-Mutual Funds

     Walter K. Walsh               Compliance Officer

     James E. McKee                Secretary


GLI, Inc.
Directors:

     Mario J. Gabelli              See above-Gabelli Funds, Inc.


Officers:

     Mario J. Gabelli              Chairman and Chief Investment
                                   Officer

     Stephen G. Bondi              Vice President











Gabelli Associates Limited

Directors:

     Mario J. Gabelli              See above-Gabelli Funds, Inc.
     
     MeesPierson  (Cayman)         British American Centre   
     Limited                       Dr. Roy's Drive- Phase 3
                                   Georgetown, Grand Cayman   
                                   Cayman Islands, British             
                                   WestIndies

Officers:

     Mario J. Gabelli              Chief Investment Officer

     Kevin Bromley                 Vice President, Treasurer and
                                   Assistant Secretary

     Sandra Wight                  Secretary and Assistant Treasurer


Gabelli International Limited

Directors:

     Mario J. Gabelli              See above-Gabelli Funds, Inc.
   
     MeesPierson  (Cayman)         British American Centre   
     Limited                       Dr. Roy's Drive- Phase 3
                                   Georgetown, Grand Cayman   
                                   Cayman Islands, British West Indies

Officers:

     Kevin Bromley                 Vice President, Treasurer, and 
                                   Assistant Secretary 
                                   MeesPierson (Cayman) Limited
                                   British American Centre  
                                   Dr. Roy's Drive- Phase 3   
                                   Georgetown, Grand Cayman    
                                   Cayman Islands, British West Indies

     Sandra Wight                  Secretary and Assistant Treasurer
                                   Assistant Secretary
                                   MeesPierson (Cayman) Limited
                                   British American Centre  
                                   Dr. Roy's Drive- Phase 3   
                                   Georgetown, Grand Cayman    
                                   Cayman Islands, British West Indies










Gemini Capital Management Ltd.

Directors:

     Marc J. Gabelli               See above-Gabelli Funds, Inc.

     Stephen G. Bondi              See Above-Gabelli Funds, Inc.

     Michael A. Salatto            Controller, Gabelli Securities, Inc.

     Michael J. Burns              Appleby, Spurling & Kempe
                                   Cedar House
                                   41 Cedar Avenue
                                   Hamilton, HM12
                                   Bermuda             




     Douglas Molyneux              Appleby, Spurling & Kempe
                                   Cedar House
                                   41 Cedar Avenue
                                   Hamilton, HM12
                                   Bermuda        


Lynch Corporation
8 Sound Shore Drive
Greenwich, CT  06830

Directors:

     Paul J. Evanson               President               
                                   Florida Light & Power Co.
                                   P.O Box 14000
                                   700 Universe Blvd.
                                   Juno Beach, Fl 33408

     Morris Berkowitz              Business Consultant
                                   163-43 Willets Point Blvd.
                                   Whitestone, NY 11357

     Mario J. Gabelli              See above-Gabelli Funds, Inc.

     Paul Woolard                  Business Consultant
                                   116 East 68th Street
                                   New York, NY 10021

     E. Val Cerutti                Business Consultant          
                                   Cerutti Consultants 
                                   227 McLain Street
                                   Mount Kisco, NY   10540





     Ralph R. Papitto              Chairman of the Board
                                   AFC Cable Systems, Inc.
                                   50 Kennedy Plaza
                                   Suite 1250
                                   Providence, RI  02903

     Salvatore Muoio               Principal
                                   S. Muoio & Co., LLC
                                   655 Third Avenue
                                   New York, NY 10017       

     John C. Ferrara               Business Consultant
                                   110 Edward Place
                                   Stamford, CT  06905

Officers:

     Mario J. Gabelli              Chairman and Chief Executive Officer

     Robert E. Dolan               Chief Financial Officer 

     Carmine Ceraolo               Assistant Controller

     Robert A. Hurwich             Vice President-Administration,
                                   Secretary and General Counsel

Spinnaker Industries, Inc.
600 N. Pearl Street 
Suite 2160
Dallas, TX  75201

Directors:

     Joseph P. Rhein               5003 Central Avenue     
                                   Ocean City, NJ  08226
                                   
     Richard J. Boyle              The Boyle Group, Inc.             
                                   6110 Blue Circle Drive
                                   Suite 250           
                                   Minnetonka, MN  55343

     Ned N. Fleming, III           Boyle, Fleming, 
                                   & Co., Inc.              
                                   600 N. Pearl Street
                                   Suite 2160
                                   Dallas, TX  75201


     Robert E. Dolan               See above Lynch Corporation

     Anthonie C. van Ekris         Chairman and Chief 
                                   Executive Officer
                                   Balmac International, Inc.
                                   61 Broadway
                                   Suite 1900
                                   New York, NY  10006


     Frank E. Grzelecki            President
                                   Handy & Harman
                                   One Corporate Center
                                   Rye, New York 10580





     Philip W. Colburn             Chairman of the Board
                                   Allen Telecom, Inc.
                                   11611 San Vincente Blvd.
                                   Suite 505
                                   Los Angeles, CA 90049
Officers:

     Ned N. Fleming, III           President

     Richard J. Boyle              Chairman and Chief Executive Officer

     Robert A. Hurwich             Secretary

     Mark A. Matteson              Vice President, Corporate
                                   Development

     Craig Jennings                Controller


Entoleter, Inc.
251 Welton Street
Hamden, CT  06517

Directors:

     Ned N. Fleming, III           See above-Spinnaker

     Mark A. Matteson              See above-Spinnaker

     Robert Hladick                See above Entoleter   

     Robert P. Wentzel             See above Entoleter


     James Fleming                 230 Saugatuck Avenue, Unit 8
                                   Westport, CT  06880

Officers:

     Robert P. Wentzel             President

     Mark R. Matteson              Vice President

     Robert Hladick                Controller & Secretary






Western New Mexico Telephone Company
314 Yankee Street
Silver City, NM  88062

Directors:

     Jack C. Keen                  Chairman and President

     Dr. Brian E. Gordon           Vice President

     Mary Beth Baxter              Secretary & Treasurer



     John Clay Keen                Route 6
                                   Box 270
                                   Greenville, TX 75401

     Robert E. Dolan               See above-Lynch Corporation

     Robert A. Hurwich             See above-Lynch Corporation

     Carmine Ceraolo               See above-Lynch Corporation

     Mary J. Carroll               See above-Lynch Corporation

     Eugene P. Connell             See above-Lynch Corporation

Officers:

     Jack C. Keen                  Chairman and President

     Jack L. Bentley               Executive Vice President

     Dr. Brian E. Gordon           Vice President

     Charles M. Baxter             Sr. Vice President-Operations
     
     Mary Beth Baxter              Secretary & Treasurer

     Robert A. Hurwich             Assistant Treasurer



Inter-Community Telephone Company
P.O. Box A
Nome, ND  58062

Directors:

     Mary J. Carroll               See above-Lynch Corporation

     Robert E. Dolan               See above-Lynch Corporation

     Joseph H. Epel                See above-Lynch Corporation

     Robert A. Hurwich             See above-Lynch Corporation

     Eugene P. Connell             See above-Lynch Corporation

     Harry B. Snyder               P.O. Box 131
                                   Buffalo, ND  58011
                                   
     Robert Snyder                 200 Broadway South
                                   Buffalo, ND  58011

     Keith S. Anderson             See above-Inter-Community Telephone
                                   Company

     Robert Reff                   See above-Inter-Community Telephone
                                   Company

Officers:

     Leone A. Nilsen               President
     
     Robert Snyder                 President 

     Robert  Reff                  Vice President
     
     Keith S. Anderson             Secretary
     
     Harry B. Snyder               Treasurer

     Joseph H. Epel                Assistant Treasurer

     Robert A. Hurwich             Assistant Secretary


Lynch Telecommunications Corporation
8 Sound Shore Drive
Greenwich, CT  06830

Directors:

     Richard A. Kiesling           2801 International Lane
                                   Suite 207
                                   Madison, WI  53740           

     Robert E. Dolan               See above-Lynch Corporation

     Robert A. Snyder              See above-Inter-Community
                                   Telephone Company

     Eugene P. Connell             See above-Lynch Corporation

Officers:

     Robert A. Hurwich             Secretary

     Joseph H. Epel                Treasurer and 
                                   Assistant Secretary

     Robert E. Dolan               President, Controller, Assistant
                                   Treasurer, and Assistant Secretary


Lynch Telephone Corporation
8 Sound Shore Drive
Greenwich, CT  06830

Directors:

     Robert E. Dolan               Controller

     Jack W. Keen                  President

     Robert A. Hurwich             See above-Lynch Corporation

     Eugene P. Connell             See above-Lynch Corporation


Officers:

     Jack C. Keen                  Chairman

     Jack W. Keen                  President

     Robert A. Hurwich             Secretary

     Mary Beth Baxter              Treasurer and 
                                   Assistant Secretary

     Robert E. Dolan               Controller
SCHEDULE II
INFORMATION WITH RESPECT TO
TRANSACTIONS EFFECTED DURING THE PAST SIXTY DAYS OR
SINCE THE MOST RECENT FILING ON SCHEDULE 13D (1)

                                                                             
                                             SHARES PURCHASED        AVERAGE    
                                  DATE            SOLD(-)             PRICE(2)  
                                                                                
COMMON STOCK-VIACOM INC CL A                                         
                                                                                
          GAMCO INVESTORS, INC.                                                 
                                12/01/97            1,000-           35.1250    
                                11/12/97            2,500            31.6500    
          GIL II, LTD.                                                          
                                12/01/97            2,000-           35.1250    
          GABELLI INTERNATIONAL LTD                                             
                                12/01/97            3,000-           35.1250    
                                11/21/97            3,000            34.1250    
          GABELLI FUNDS, INC.                                                   
               THE GABELLI VALUE FUND,INC.                                      
                                12/22/97            4,000            37.7375    
                                12/22/97           32,500            37.9378    
                                12/11/97            3,500            34.2903    
                                12/04/97           10,000            34.8313    
                                12/03/97           20,000            34.6500    
                                12/03/97            9,000            34.4250    
                                11/24/97           38,400            33.3375    
                                11/24/97           11,600            33.6146    
                                11/21/97            9,000            33.6646    
                                11/21/97           50,000            34.0205    
                                11/21/97           50,000            34.3233    
                                11/20/97           30,000            33.0354    
                                11/17/97           23,000            31.7904    
                                11/14/97           19,000            32.0500    
               THE GABELLI EQUITY TRUST,INC.                                    
                                12/22/97            6,000            37.7375    
                                12/22/97           49,000            37.9378    
                                12/02/97            3,600            34.8000    
                                11/10/97            6,400            30.5500    
               THE GABELLI COUCH POTATO FUND                                    
                                11/21/97           10,000            33.8000    
               THE GABELLI ASSET FUND                                           
                                12/11/97           10,000            34.2903    
                                11/24/97            3,400            33.6146    
                                11/24/97           11,600            33.3375    
               THE GABELLI CAPITAL ASSET FUND                                   
                                11/21/97            3,000            33.9250    
                                11/17/97            5,000            31.7904    
               THE GABELLI ABC FUND                                             
                                11/17/97            2,000-           33.2614    
                                                                                
                                                                                
                                       39
                                                                                
SCHEDULE II
INFORMATION WITH RESPECT TO
TRANSACTIONS EFFECTED DURING THE PAST SIXTY DAYS OR
SINCE THE MOST RECENT FILING ON SCHEDULE 13D (1)
                                                                                
                                             SHARES PURCHASED        AVERAGE    
                                  DATE            SOLD(-)             PRICE(2)  
                                                                               
COMMON STOCK-VIACOM INC CL A                                         
                                                                                
              THE GABELLI ABC FUND                                             
                               11/17/97            1,800            31.7904    
                               11/17/97            2,000            33.4250    
         GAMCO INVESTORS, INC.                                                 
                               12/22/97           11,500            37.6685    
                               12/22/97           10,000            37.5894    
                               12/22/97           50,000            37.5988    
                               12/22/97            5,000            37.6875    
                               12/19/97            5,000-           36.6375    
                               12/18/97            2,000-           37.8125    
                               12/17/97              200-           38.7500    
                               12/16/97              300            39.0000    
                               12/15/97              500            38.3125    
                               12/15/97            3,600            38.0000    
                               12/15/97           10,000            38.2275    
                               12/12/97            1,000            36.2500    
                               12/12/97           12,800-           36.5352    
                               12/11/97            1,500            35.5000    
                               12/11/97           11,000-           35.6250    
                               12/11/97            3,000            35.2708    
                               12/10/97            2,000-           34.2500    
                               12/10/97              200            34.5000    
                               12/09/97            2,000            34.3750    
                               12/09/97            5,000            34.3625    
                               12/09/97            2,600            34.6250    
                               12/09/97            1,000            34.5000    
                               12/09/97            1,500            34.4375    
                               12/08/97           10,000            34.2500    
                               12/05/97           15,000            34.4625    
                               12/04/97           10,000            34.5625    
                               12/04/97            9,300            34.7379    
                               12/03/97            2,000            34.6250    
                               12/03/97            5,700            34.6404    
                               12/03/97              500            34.5000    
                               12/02/97              800            35.4375    
                               12/02/97           11,800            34.8178    
                               12/01/97            9,500            35.2105    
                               12/01/97            5,000-           35.5000    
                               12/01/97            1,500            35.4375    
                               11/26/97            1,500-           34.7708    
                               11/25/97           40,000            33.4370    
                               11/25/97           40,000-           33.4297    
                                       40
                                                                               
SCHEDULE II
INFORMATION WITH RESPECT TO
TRANSACTIONS EFFECTED DURING THE PAST SIXTY DAYS OR
SINCE THE MOST RECENT FILING ON SCHEDULE 13D (1)
                                                                               
                                            SHARES PURCHASED        AVERAGE    
                                 DATE            SOLD(-)             PRICE(2)  
                                                                               
COMMON STOCK-VIACOM INC CL A                                         
                                                                               
         GAMCO INVESTORS, INC.                                                 
                               11/24/97            1,000            33.6250    
                               11/24/97           20,000            33.4803    
                               11/24/97            5,000            33.2500    
                               11/24/97           40,000            33.4297    
                               11/24/97           12,000            33.4010    
                               11/24/97           15,000            33.3792    
                               11/21/97            2,500            33.9750    
                               11/21/97            4,000            34.2500    
                               11/21/97            5,000            34.0000    
                               11/21/97            1,000            33.9375    
                               11/21/97           58,000            33.9763    
                               11/21/97           10,000            33.9000    
                               11/20/97            3,100            33.4798    
                               11/20/97            3,200            33.5000    
                               11/19/97            7,800            33.0000    
                               11/19/97            2,500            33.0225    
                               11/19/97           10,000            32.6250    
                               11/18/97           15,000            33.1250    
                               11/17/97            3,000            33.6875    
                               11/17/97            5,700            33.6436    
                               11/14/97            5,000            32.5425    
                               11/14/97            1,500-           31.6250    
                               11/14/97            9,700            32.8860    
                               11/13/97           10,700            31.7150    
                               11/13/97           20,000            31.5000    
                               11/11/97            1,000-           31.5000    
                               11/11/97            2,500            31.5000    
                               11/10/97            8,500            30.3691    
                                  
         ALCE PARTNERS LP                                                      
                               12/11/97            3,000-           35.3750    
                               11/24/97            3,000            33.6042    
                                                                               
                                                                               
         (1) UNLESS OTHERWISE INDICATED, ALL TRANSACTIONS WERE EFFECTED        
             ON THE AMERICAN STOCK EXCHANGE.                                    
    
         (2) PRICE EXCLUDES COMMISSION.                                        
                                                                               
         (*) RESULTS IN CHANGE OF DISPOSITIVE POWER AND BENEFICIAL OWNERSHIP.  
                                                                               
                                       41