THIS WARRANT AND THE SHARES OF COMMON STOCK ISSUED UPON
            ITS EXERCISE ARE SUBJECT TO THE RESTRICTIONS ON TRANS-
                  FER SET FORTH IN SECTION 4 OF THIS WARRANT


Warrant No. 1                                      Number of Shares: 1,155,235
                                                       (subject to adjustment)
Date of Issuance: August  3, 1998


                              AVID TECHNOLOGY, INC.

                          COMMON STOCK PURCHASE WARRANT

                           (Void after August 3, 2008)

      Avid Technology,  Inc., a Delaware corporation (the "COMPANY"),  for value
received,  hereby certifies that Microsoft Corporation or, subject to Section 9,
its registered assigns (the "REGISTERED  HOLDER"),  is entitled,  subject to the
terms set forth below, to purchase from the Company, at any time or from time to
time on or after  August 3,  2000 and on or  before  August 3, 2008 at not later
than 5:00 p.m. (Boston,  Massachusetts time),  1,155,235 shares of common stock,
$.01 par value per share (the "COMMON  STOCK"),  of the  Company,  at a purchase
price of $47.65 per share. The shares of Common Stock  purchasable upon exercise
of this Warrant, and the purchase price per share, each as adjusted from time to
time pursuant to the provisions of this Warrant,  are hereinafter referred to as
the "WARRANT SHARES" and the "PURCHASE PRICE," respectively.

1.    EXERCISE

(1) This Warrant may be exercised by the Registered Holder, in whole or in part,
by surrendering this Warrant,  with the purchase form appended hereto as EXHIBIT
I duly executed by such Registered  Holder or by such  Registered  Holder's duly
authorized  attorney,  at the principal office of the Company,  or at such other
office or agency as the Company may  designate,  accompanied by payment in full,
in lawful money of the United  States,  of the Purchase Price payable in respect
of the number of Warrant Shares purchased upon such exercise. The Purchase Price
shall be paid in the form of (i) cash, (ii) a check of the Registered  Holder to
the Company, (iii) an electronic wire transfer of immediately available funds in
accordance with written  instructions of the Company or, (iv) if approved by the
Company, any combination of the foregoing forms of payment.

(2)  Each  exercise  of this  Warrant  shall be  deemed  to have  been  effected
immediately  prior to the close of  business  on the day on which  this  Warrant
shall have been surrendered to the Company as provided in subsection 1(a) above.
At such time, the person or persons in whose name or names any  certificates for
Warrant  Shares shall be issuable  upon such  exercise as provided in subsection
1(c) below shall be deemed to have become the holder or holders of record of the
Warrant Shares represented by such certificates.

(3) As soon as  practicable  after the  exercise  of this  Warrant in full or in
part, and in any event within 10 days thereafter,  the Company,  at its expense,
will cause to be issued in the name of, and delivered to, the Registered Holder,
or as such Holder (upon  compliance with Section 9 and payment by such Holder of
any applicable transfer taxes) may direct:

(1) a certificate or certificates for the number of full Warrant Shares to which
 such  Registered  Holder shall be entitled upon such exercise  plus, in lieu of
 any  fractional  share to which  such  Registered  Holder  would  otherwise  be
 entitled, cash in an amount determined pursuant to Section 3 hereof; and

(2) in case such exercise is in part only, a new warrant or warrants  (dated the
 date  hereof)  of like  tenor,  calling in the  aggregate  on the face or faces
 thereof for the number of Warrant  Shares equal  (without  giving effect to any
 adjustment therein) to the number of such shares called for on the face of this
 Warrant minus the number of such shares purchased by the Registered Holder upon
 such exercise.

2.    ADJUSTMENTS

(1) If outstanding shares of the Company's Common Stock shall be subdivided into
a  greater  number  of shares or a  dividend  in Common  Stock  shall be paid in
respect of Common Stock, the Purchase Price in effect  immediately prior to such
subdivision or at the record date of such dividend shall simultaneously with the
effectiveness of such  subdivision or immediately  after the record date of such
dividend be proportionately reduced. If outstanding shares of Common Stock shall
be  combined  into a smaller  number of  shares,  the  Purchase  Price in effect
immediately   prior  to  such  combination   shall,   simultaneously   with  the
effectiveness  of such  combination,  be  proportionately  increased.  When  any
adjustment is required to be made in the Purchase  Price,  the number of Warrant
Shares  purchasable  upon the exercise of this  Warrant  shall be changed to the
quotient  of (i) (A) the number of shares  issuable  upon the  exercise  of this
Warrant  immediately  prior to such  adjustment  multiplied  by (B) the Purchase
Price in  effect  immediately  prior  to such  adjustment,  divided  by (ii) the
Purchase Price in effect immediately after such adjustment.

(2) If there shall occur any capital  reorganization or  reclassification of the
Company's  Common  Stock (other than a change in par value or a  subdivision  or
combination as provided for in subsection 2(a) above),  or any  consolidation or
merger of the Company with or into another corporation,  or a transfer of all or
substantially  all of the  assets  of the  Company,  then,  as part of any  such
reorganization, reclassification, consolidation, merger or sale, as the case may
be, lawful provision shall be made so that the Registered Holder of this Warrant
shall have the right thereafter to receive upon the exercise hereof the kind and
amount of shares of stock or other  securities or property which such Registered
Holder  would have been  entitled to receive if,  immediately  prior to any such
reorganization, reclassification, consolidation, merger or sale, as the case may
be, such  Registered  Holder had held the number of shares of Common Stock which
were then  purchasable  upon the  exercise  of this  Warrant.  In any such case,
appropriate  adjustment (as reasonably  determined in good faith by the Board of
Directors of the Company) shall be made in the application of the provisions set
forth  herein  with  respect  to the  rights  and  interests  thereafter  of the
Registered  Holder of this Warrant,  such that the  provisions set forth in this
Section 2  (including  provisions  with  respect to  adjustment  of the Purchase
Price) shall thereafter be applicable,  as nearly as is reasonably  practicable,
in relation to any shares of stock or other  securities  or property  thereafter
deliverable upon the exercise of this Warrant.

(3) When any  adjustment  is  required  to be made in the  Purchase  Price,  the
Company shall promptly mail to the Registered Holder a certificate setting forth
the Purchase Price after such  adjustment and setting forth a brief statement of
the facts requiring such adjustment.  Such certificate  shall also set forth the
kind and amount of stock or other securities or property into which this Warrant
shall be exercisable  following the occurrence of any of the events specified in
subsection  2(a) or (b) above.

3.  FRACTIONAL  SHARES.  The Company  shall not be required upon the exercise of
this  Warrant  to issue any  fractional  shares,  but shall  make an  adjustment
therefor  in cash on the  basis of the Fair  Market  Value  per  share of Common
Stock.  For this purpose,  The Fair Market Value per share of Common Stock shall
be determined as follows:

(1) If the Common Stock is listed on a national securities exchange,  the Nasdaq
National Market or another nationally  recognized  exchange or trading system as
of the Exercise  Date,  the Fair Market Value per share of Common Stock shall be
deemed to be the last  reported  sale price per share of Common Stock thereon on
the Exercise Date; or, if no such price is reported on such date,  such price on
the next  preceding  business day (provided that if no such price is reported on
the next preceding business day, the Fair Market Value per share of Common Stock
shall be determined pursuant to clause (ii)).

(2) If the Common  Stock is not listed on a national  securities  exchange,  the
Nasdaq  National  Market or another  nationally  recognized  exchange or trading
system as of the Exercise  Date, the Fair Market Value per share of Common Stock
shall be  deemed  to be the  amount  most  recently  determined  by the Board of
Directors  to  represent  the fair  market  value per share of the Common  Stock
(including  without  limitation a determination  for purposes of granting Common
Stock  options or issuing  Common  Stock under an employee  benefit  plan of the
Company); and, upon request of the Registered Holder, the Board of Directors (or
a  representative  thereof) shall promptly  notify the Registered  Holder of the
Fair Market Value per share of Common Stock.  Notwithstanding the foregoing,  if
the Board of Directors has not made such a determination  within the three-month
period prior to the  effective  date of exercise,  as  determined in pursuant to
Section  1(b) above (the  "EXERCISE  DATE"),  then (A) the Fair Market Value per
share of  Common  Stock  shall be the  amount  next  determined  by the Board of
Directors  to  represent  the fair  market  value per share of the Common  Stock
(including  without  limitation a determination  for purposes of granting Common
Stock  options or issuing  Common  Stock under an employee  benefit  plan of the
Company),  (B) the Board of Directors shall make such a determination  within 15
days of a request by the  Registered  Holder that it do so, and (C) the exercise
of this Warrant  pursuant to this  subsection  1(b) shall be delayed  until such
determination is made.

4.    SECURITIES LAW TRADING RESTRICTIONS

(1) This Warrant and the Warrant Shares shall not be sold or transferred  unless
(i) the Company  provides  consent in accordance with Section 9, and (ii) either
(A) the Warrant or the Warrant Shares first shall have been registered under the
Securities  Act of 1933, as amended (the "Act"),  or (B) the Company first shall
have been furnished with an opinion of legal counsel, reasonably satisfactory to
the  Company,  to the  effect  that such  sale or  transfer  is exempt  from the
registration requirements of the Act.

(2)  Each   certificate   representing   Warrant  Shares  shall  bear  a  legend
substantially in the following form:

            THE  SECURITIES  REPRESENTED  BY  THIS  CERTIFICATE  HAVE  NOT  BEEN
            REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT
            BE OFFERED, SOLD OR OTHERWISE  TRANSFERRED,  PLEDGED OR HYPOTHECATED
            UNLESS AND UNTIL SUCH SECURITIES ARE REGISTERED UNDER SUCH ACT OR AN
            OPINION  OF  COUNSEL  REASONABLY  SATISFACTORY  TO  THE  COMPANY  IS
            OBTAINED TO THE EFFECT THAT SUCH REGISTRATION IS NOT REQUIRED.

The foregoing  legend shall be removed from the  certificates  representing  any
Warrant  Shares,  at the  request  of the holder  thereof,  at such time as they
become  eligible  for  resale  pursuant  to Rule  144(k)  under the Act,  or any
successor provision thereto.


5. NO  IMPAIRMENT.  The Company will not, by amendment of its charter or through
reorganization,  consolidation, merger, dissolution, sale of assets or any other
voluntary action, avoid or seek to avoid the observance or performance of any of
the terms of this  Warrant,  but will at all times in good  faith  assist in the
carrying  out of all such terms and in the  taking of all such  action as may be
necessary  or  appropriate  in order to protect the rights of the holder of this
Warrant against impairment.

6.    NOTICES OF RECORD DATE, ETC.

 In case:

(1) the Company shall take a record of the holders of its Common Stock (or other
stock or securities at the time  deliverable  upon the exercise of this Warrant)
for the purpose of entitling  or enabling  them to receive any dividend or other
distribution, or to receive any right to subscribe for or purchase any shares of
stock of any class or any other securities, or to receive any other right; or

(2) of any capital  reorganization of the Company,  any  reclassification of the
capital stock of the Company, any consolidation or merger of the Company with or
into  another  corporation  (other than a  consolidation  or merger in which the
Company is the surviving entity), or any transfer of all or substantially all of
the assets of the Company; or

(3) of the voluntary or  involuntary  dissolution,  liquidation or winding-up of
the Company,  then,  and in each such case, the Company will mail or cause to be
mailed to the Registered Holder of this Warrant a notice specifying, as the case
may be,  (i) the date on which a record is to be taken for the  purpose  of such
dividend,  distribution  or right,  and stating the amount and character of such
dividend,  distribution  or  right,  or (ii) the  effective  date on which  such
reorganization, reclassification,  consolidation, merger, transfer, dissolution,
liquidation or winding-up is to take place, and the time, if any is to be fixed,
as of which  the  holders  of record of  Common  Stock (or such  other  stock or
securities at the time  deliverable  upon the exercise of this Warrant) shall be
entitled  to  exchange  their  shares of Common  Stock (or such  other  stock or
securities)   for   securities   or  other   property   deliverable   upon  such
reorganization, reclassification,  consolidation, merger, transfer, dissolution,
liquidation  or  winding-up.  Such notice shall be mailed at least ten (10) days
prior to the  record  date or  effective  date for the event  specified  in such
notice.

7.  RESERVATION  OF  STOCK.  The  Company  will at all  times  reserve  and keep
available,  solely for issuance and delivery  upon the exercise of this Warrant,
such number of Warrant Shares and other stock,  securities and property, as from
time to time shall be issuable upon the exercise of this Warrant.

8. REPLACEMENT OF WARRANTS.  Upon receipt of evidence reasonably satisfactory to
the Company of the loss,  theft,  destruction  or mutilation of this Warrant and
(in the case of loss,  theft  or  destruction)  upon  delivery  of an  indemnity
agreement  (with  surety  if  reasonably   required)  in  an  amount  reasonably
satisfactory to the Company,  or (in the case of mutilation)  upon surrender and
cancellation  of this Warrant,  the Company will issue,  in lieu thereof,  a new
Warrant of like tenor.


9.    TRANSFER RESTRICTIONS

(1) Neither this Warrant nor any rights hereunder are transferable,  in whole or
in part,  without  the  written  consent of the  Company  which the  Company may
withhold in its sole  discretion.  To effect any such  permitted  transfer,  the
Registered   Holder  must  surrender  this  Warrant  with  a  properly  executed
assignment (in the form attached  hereto as EXHIBIT II) at the principal  office
of the  Company.  Such  assignment  shall  not be  effective  unless  and  until
countersigned by the Company.

(2)  Upon  the  surrender  by the  Registered  Holder  of  this  Warrant  and an
assignment executed by the Registered Holder and countersigned by the Company to
the Company at the principal office of the Company, the Company will, subject to
the  provisions  of Section 4 hereof,  issue and deliver to or upon the order of
such Holder a new Warrant of like tenor,  in such name as the Registered  Holder
(upon payment by such Registered Holder of any applicable  transfer taxes) shall
direct,  calling on the face  thereof  for the number of shares of Common  Stock
called for on the face of the Warrant so  surrendered.  (3) Until any  permitted
transfer of this  Warrant is effected as provided  above,  the Company may treat
the  Registered  Holder of this  Warrant as the  absolute  owner  hereof for all
purposes.

10.  MAILING OF NOTICES,  ETC.  All notices  and other  communications  from the
Company to the Registered  Holder of this Warrant shall be mailed by first-class
certified or registered mail,  postage prepaid,  to the address furnished to the
Company in writing by the last Registered  Holder of this Warrant who shall have
furnished  an  address  to  the  Company  in  writing.  All  notices  and  other
communications  from the  Registered  Holder of this  Warrant  or in  connection
herewith to the Company shall be mailed by  first-class  certified or registered
mail,  postage prepaid,  to the Company at its principal office set forth below.
If the Company should at any time change the location of its principal office to
a place other than as set forth below,  it shall give prompt  written  notice to
the  Registered  Holder of this Warrant and  thereafter  all  references in this
Warrant to the location of its principal  office at the particular time shall be
as so specified in such notice.

11. NO RIGHTS AS STOCKHOLDER. Until the exercise of this Warrant, the Registered
Holder of this Warrant shall not have or exercise any rights by virtue hereof as
a stockholder of the Company.

12.  CHANGE OR WAIVER.  No term of this  Warrant may be changed or waived  other
than by an instrument in writing  signed by the party against which  enforcement
of the change or waiver is sought.

13.  HEADINGS.  The headings in this Warrant are for purposes of reference  only
and shall not limit or  otherwise  affect the meaning of any  provision  of this
Warrant.

14. GOVERNING LAW. This Warrant shall be governed by and construed in accordance
with the laws of the State of Delaware  applicable to contracts entered into and
performed entirely within Delaware.



                                    AVID TECHNOLOGY, INC.



                                    By:   /S/WILLIAM L. FLAHERTY
                                       --------------------------
                                        Senior Vice President of Finance, Chief
                                        Financial Officer, and Treasurer



ATTEST:



  /S/PETER T. JOHNSON
  --------------------








                                                                       EXHIBIT I





                                  PURCHASE FORM





To:_________________                            Dated:______________





      The  undersigned,  pursuant to the  provisions  set forth in the  attached
Warrant (No.  ___),  hereby  irrevocably  elects to purchase _____ shares of the
Common Stock covered by such Warrant.  The undersigned herewith makes payment of
$____________, representing the full purchase price for such shares at the price
per share provided for in such Warrant. Such payment is in the form of (indicate
the applicable amount for each form of payment):

      $___________  Cash

      $___________  Check of the Registered Holder to the Company

      $___________  Wire transfer of immediately available funds to the
                    Company


      $___________  TOTAL PURCHASE PRICE







                                   Signature:

                                    Address:










                                                                      EXHIBIT II





                                 ASSIGNMENT FORM





      FOR VALUE RECEIVED, ________________________________________

hereby sells,  assigns and transfers all of the rights of the undersigned  under
the attached  Warrant (No.  ____) with respect to the number of shares of Common
Stock covered thereby set forth below, unto:



   Name of Assignee                 Address                     No. of Shares







REGISTERED HOLDER

Signature:                          Dated:

Witness:                            Dated:


      On behalf and in the name of the Company,  the undersigned consents to the
assignment of the attached Warrant by the Registered  Holder to the assignee set
forth above.

COMPANY


By:

Name:

Title: