SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549


                                   ----------


                                    FORM 8-A


                FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES
                     PURSUANT TO SECTION 12(b) OR (g) OF THE
                         SECURITIES EXCHANGE ACT OF 1934



                             PINNACLE SYSTEMS, INC.
             -----------------------------------------------------
             (Exact name of Registrant as specified in its charter)



              California                                  94-3003809
- ----------------------------------------       ---------------------------------
(State of incorporation or organization)       (IRS Employer Identification No.)


                            280 North Bernardo Avenue
                             Mountain View, CA 94043
               (Address of principal executive offices) (Zip Code)

                                   ----------

Securities to be registered pursuant to Section 12(b) of the Act:

   Title of each class                        Name of each exchange on which
   to be so registered                        each class is to be registered
   -------------------                        ------------------------------
            None                                         None

Securities to be registered pursuant to Section 12(g) of the Act:

                         Preferred Share Purchase Rights
                         -------------------------------
                                (Title of Class)








Item 1.           Description of Securities to be Registered.

         On December 12, 1996,  pursuant to a Preferred  Shares Rights Agreement
(the "Rights  Agreement")  between  Pinnacle  Systems,  Inc. (the "Company") and
ChaseMellon Shareholder Services,  L.L.C., as Rights Agent (the "Rights Agent"),
the Company's Board of Directors declared a dividend of one right (a "Right") to
purchase  one  one-thousandth  share of the  Company's  Series  A  Participating
Preferred  Stock  ("Series A Preferred")  for each  outstanding  share of Common
Stock, no par value ("Common Shares"),  of the Company.  The dividend is payable
on December 27, 1996 (the  "Record  Date") to  stockholders  of record as of the
close of business on that day.  Each Right  entitles  the  registered  holder to
purchase from the Company one one-thousandth of a share of Series A Preferred at
an exercise price of $65.00 (the "Purchase Price"), subject to adjustment.

         The following summary of the principal terms of the Rights Agreement is
a general  description  only and is subject to the detailed terms and conditions
of the Rights Agreement. A copy of the Rights Agreement is attached as Exhibit 1
to this Registration Statement and is incorporated herein by reference.




                                       -2-





Rights Evidenced by Common Share Certificates

         The Rights will not be exercisable until the Distribution Date (defined
below).  Certificates for the Rights ("Rights Certificates") will not be sent to
shareholders  and the Rights  will  attach to and trade only  together  with the
Common Shares. Accordingly,  Common Share certificates outstanding on the Record
Date will evidence the Rights  related  thereto,  and Common Share  certificates
issued  after the Record Date will contain a notation  incorporating  the Rights
Agreement by reference.  Until the Distribution  Date (or earlier  redemption or
expiration  of the Rights),  the  surrender or transfer of any cer tificates for
Common  Shares,  outstanding as of the Record Date,  even without  notation or a
copy of the Summary of Rights being attached  thereto,  will also constitute the
transfer of the Rights  associated  with the Common Shares  represented  by such
certificate.

Distribution Date

         The Rights will separate from the Common  Shares,  Rights  Certificates
will be issued and the Rights will become  exercisable  upon the earlier of: (i)
10 days (or such later date as may be  determined  by a majority of the Board of
Directors,  excluding directors affiliated with the Acquiring Person, as defined
below (the  "Continuing  Directors"))  following  a public  announcement  that a
person or group of affiliated or associated persons (an "Acquiring  Person") has
acquired, or obtained the right to acquire,  beneficial ownership of 15% or more
of the outstanding  Common Shares,  or (ii) 10 business days (or such later date
as may be determined by a majority of the  Continuing  Directors)  following the
commencement  of, or  announcement  of an  intention  to make, a tender offer or
exchange offer the


                                       -3-





consummation  of which would result in the  beneficial  ownership by a person or
group of 15% or more of the outstanding Common Shares. The earlier of such dates
is referred to as the "Distribution Date."

Issuance of Rights Certificates; Expiration of Rights

         As soon as practicable following the Distribution Date, separate Rights
Certificates  will be mailed to holders of record of the Common Shares as of the
close of business on the Distribution Date and such separate Rights Certificates
alone will evidence the Rights from and after the Distribution  Date. The Rights
will expire on the  earliest  of (i)  December  12, 2006 (the "Final  Expiration
Date") or (ii) redemption or exchange of the Rights as described below.

Initial Exercise of the Rights

         Following the  Distribution  Date,  and until one of the further events
described  below,  holders of the  Rights  will be  entitled  to  receive,  upon
exercise and the payment of the Purchase Price, one one-thousandth of a share of
the Series A Preferred.

Right to Buy Company Common Shares

         Unless the Rights are earlier redeemed,  in the event that an Acquiring
Person  becomes  the  beneficial  owner of 15% or more of the  Company's  Common
Shares then outstanding,  then proper provision will be made so that each holder
of a  Right  which  has  not  theretofore  been  exercised  (other  than  Rights
beneficially  owned by the  Acquiring  Person or any  affiliate of the Acquiring
Person, which will thereafter


                                       -4-





be void) will thereafter have the right to receive, upon exercise, Common Shares
having a value  equal to two times the  Purchase  Price.  In the event  that the
Company does not have  sufficient  Common Shares  available for all Rights to be
exercised,  or the Board  decides that such action is necessary and not contrary
to the interests of Rights  holders,  the Company may instead  substitute  cash,
assets or other securities for the Common Shares for which the Rights would have
been exercisable.

Right to Buy Acquiring Company Stock

         Similarly,  unless the Rights are earlier redeemed,  in the event that,
after an Acquiring  Person  becomes the  beneficial  owner of 15% or more of the
Company's  Common  Shares  then  outstanding,  (i) the  Company is acquired in a
merger or other  business  combination  transaction,  or (ii) 50% or more of the
Company's  consolidated  assets  or  earning  power  are  sold  (other  than  in
transactions in the ordinary course of business),  proper provision must be made
so that each holder of a Right which has not thereto fore been exercised  (other
than Rights  beneficially  owned by the Acquiring Person or any affiliate of the
Acquiring Person,  which will thereafter be void) will thereafter have the right
to receive,  upon  exercise,  shares of common  stock of the  acquiring  company
having a value equal to two times the Purchase Price.

Exchange Provision

         At any time after the acquisition by an Acquiring  Person of beneficial
ownership of 15% or more of the Company's outstanding Common Shares and prior to
the  acquisition by any person or entity of beneficial  ownership of 50% or more
of the Company's outstanding Common Shares, the Board of


                                       -5-





Directors of the Company may exchange the Rights (other than Rights owned by the
Acquiring Person), in whole or in part, at an exchange ratio of one Common Share
per Right.

Redemption

         At any time on or prior to the close of  business on the earlier of (i)
the 10th day  following  the  acquisition  by an Acquiring  Person of beneficial
ownership of 15% or more of the  Company's  Common  Shares or such later date as
may be  determined  by a  majority  of the  Continuing  Directors  and  publicly
announced by the Company,  or (ii) the Final Expiration Date of the Rights,  the
Company  may redeem the Rights in whole,  but not in part,  at a price of $0.001
per Right.

Adjustments to Prevent Dilution

         The Purchase  Price  payable,  the number of Rights,  and the number of
Series A Preferred or Common  Shares or other  securities  or property  issuable
upon  exercise  of the Rights are  subject  to  adjustment  from time to time in
connection with the dilutive issuances by the Company as set forth in the Rights
Agreement.  With certain exceptions, no adjustment in the Purchase Price will be
required until  cumulative  adjustments  require an adjustment of at least 1% in
such Purchase Price.



                                       -6-





Cash Paid Instead of Issuing Fractional Shares

         No fractional  portion less than integral multiples of one Common Share
or one one  thousandth  of a share of Series A  Preferred  will be  issued  upon
exercise  of a Right and in lieu  thereof,  an  adjustment  in cash will be made
based on the market  price of the  security to be so issued on the last  trading
date prior to the date of exercise.

No Stockholders' Rights Prior to Exercise

         Until a Right is exercised,  the holder thereof,  as such, will have no
rights as a stockholder  of the Company  (other than any rights  resulting  from
such holder's ownership of Common Shares),  including,  without limitation,  the
right to vote or to receive dividends.

Amendment of Rights Agreement

         The provisions of the Rights  Agreement may be  supplemented or amended
by the Board of  Directors  in any manner  prior to the close of business on the
date the Rights  separate from the Common Shares and become  exercisable.  After
such date, the provisions of the Rights Agreement may be amended by the Board in
order to cure any ambiguity,  defect or inconsistency,  to make changes which do
not adversely affect the interests of holders of Rights (excluding the interests
of any  Acquiring  Person),  or to shorten or lengthen any time period under the
Rights Agreement; provided, however, that


                                       -7-





no amendment  to adjust the time period  governing  redemption  shall be made at
such time as the Rights are not redeemable.

Rights and Preferences of the Series A Preferred

         Series A Preferred  purchasable upon exercise of the Rights will not be
redeemable.  Each share of Series A Preferred  will be entitled to an  aggregate
dividend of 1,000 times the dividend  declared per Common Share. In the event of
liquidation,  the  holders of the Series A  Preferred  will be entitled to 1,000
times the amount  paid per  Common  Share  plus an amount  equal to accrued  and
unpaid dividends and distributions thereon, whether or not declared, to the date
of such payment.  Each share of Series A Preferred will have 1,000 votes, voting
together  with the Common  Shares.  These  rights  are  protected  by  customary
anti-dilution provisions.

         Because of the nature of the dividend, liquidation and voting rights of
the shares of Series A Preferred,  the value of the one one-thousandth  interest
in a share of Series A Preferred  purchasable upon exercise of each Right should
approximate the value of one Common Share.

Certain Anti-takeover Effects

         The Rights  approved by the Board are  designed to protect and maximize
the value of the outstanding  equity interests in the Company in the event of an
unsolicited  attempt by an acquiror to take over the Company,  in a manner or on
terms not approved by the Board of Directors. Takeover attempts


                                       -8-





frequently  include coercive tactics to deprive the Company's Board of Directors
and its  stockholders  of any real  opportunity  to determine the destiny of the
Company.  The  Rights  have been  declared  by the Board in order to deter  such
tactics,  including a gradual accumulation of shares in the open market of a 15%
or greater  position to be followed by a merger or a partial or two-tier  tender
offer  that does not treat all  stockholders  equally.  These  tactics  unfairly
pressure stockholders,  squeeze them out of their investment without giving them
any real choice and deprive them of the full value of their shares.

         The Rights are not  intended  to prevent a takeover  of the Company and
will not do so. The Rights may be  redeemed  by the  Company at $0.001 per Right
within ten days (or such later date as may be  determined  by a majority  of the
Continuing  Directors)  after the  accumulation  of 15% or more of the Company's
shares by a single  acquiror  or  group.  Accordingly,  the  Rights  should  not
interfere  with any  merger or  business  combination  approved  by the Board of
Directors.

         Issuance  of the  Rights  does  not in any  way  weaken  the  financial
strength of the Company or interfere  with its business  plans.  The issuance of
the Rights themselves has no dilutive effect,  will not affect reported earnings
per share, should not be taxable to the Company or to its shareholders, and will
not  change the way in which the  Company's  shares are  presently  traded.  The
Company's  Board of  Directors  believes  that the Rights  represent a sound and
reasonable means of addressing the complex issues of corporate policy created by
the current takeover environment.

         However,  the Rights may have the effect of rendering more difficult or
discouraging  an acquisition  of the Company deemed  undesirable by the Board of
Directors. The Rights may cause substantial


                                       -9-





dilution  to a person or group that  attempts to acquire the Company on terms or
in a manner not approved by the Company's Board of Directors, except pursuant to
an offer conditioned upon the negation, purchase or redemption of the Rights.

Item 2.   Exhibits.

          1.      Preferred  Shares Rights  Agreement,  dated as of December 12,
                  1996  between   Pinnacle   Systems,   Inc.   and   ChaseMellon
                  Shareholder   Services,   L.L.C.,   including   the   form  of
                  Certificate of Determination,  the form of Rights  Certificate
                  and the  Summary of Rights  attached  thereto as Exhibits A, B
                  and C, respectively.



                                      -10-





                                    SIGNATURE

         Pursuant to the  requirements of Section 12 of the Securities  Exchange
Act of 1934, the Registrant  has duly caused this  Registration  Statement to be
signed on its behalf by the undersigned, thereto duly authorized.

                                     PINNACLE SYSTEMS, INC.


Date:  December 16, 1996
                                     By:   /s/ MARK L. SANDERS
                                         ---------------------------------------
                                               Mark L. Sanders
                                               President



                                      -11-






                                                 EXHIBIT INDEX


                                                                                                              Page
                                                                                                             Number
                                                                                                              Under
                                                                                                           Sequential
    Exhibit                                                                                                 Numbering
       No.                                          Exhibit                                                  System
    -------                                         -------                                                  -------
                                                                                                            
       1          Preferred  Shares  Rights  Agreement  dated as of December 12,                                13
                  1996,   between   Pinnacle   Systems,   Inc.  and  ChaseMellon
                  Shareholder   Services,   L.L.C.,   including   the   form  of
                  Certificate of  Determination, the form of Rights  Certificate
                  and  the  Summary of Rights attached  thereto as Exhibits A, B
                  and C, respectively.