Exhibit 99.1


                CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

        In connection with this Quarterly Report on Form 10-Q of Avid
Technology, Inc. (the "Company") for the period ended March 31, 2003, as filed
with the Securities Exchange Commission on the date hereof (the "Report"), the
undersigned, David A. Krall, Chief Executive Officer of the Company, and Paul J.
Milbury, Chief Financial Officer of the Company, each hereby certifies, pursuant
to 18 U.S.C. Section 1350, that:
        (1) The Report fully complies with the requirements of Section 13(a)
            or 15(d) of the Securities Exchange Act of 1934; and
        (2) The information contained in the Report fairly presents, in all
            material respects, the financial condition and results of operations
            of the Company.


Dated:  May 14, 2003                /s/ David A. Krall
                                    -------------------------------------
                                    David A. Krall
                                    Chief Executive Officer


Dated:  May 14, 2003                /s/ Paul J. Milbury
                                    -------------------------------------
                                    Paul J. Milbury
                                    Chief Financial Officer