Quicktime File Format (2012-08-14).pdf

Profile Atom GuidelinesUniversal FeaturesThis specification describes only how features are stored in files. It does not require that the values of featuresbe reported (for example, in a user interface) in the same manner as they are stored, or require that they bereported at all.Table of FeaturesTable F-1 (page 398) lists the universal features described in this appendix.Table F-1Universal featuresBrandCodeDescriptionProfile Parent0x20202020mvbr“Maximum Video Bit Rate” (page 399)Movie or Video Track0x20202020avvb“Average Video Bit Rate” (page 400)Movie or Video Track0x20202020mabr“Maximum Audio Bit Rate” (page 401)Movie or Track0x20202020avab“Average Audio Bit Rate” (page 403)Movie or Sound Track0x20202020vfmt“QuickTime Video Codec Type” (page 404)Movie or Video Track0x20202020afmt“QuickTime Audio Codec Type” (page 405)Movie or Video Track0x20202020m4vp“MPEG-4 Video Profile” (page 406)Movie or Video Track0x20202020mp4v“MPEG-4 Video Codec” (page 407)Movie or Video Track0x20202020m4vo“MPEG-4 Video Object Type” (page 408)Movie or Video Track0x20202020mp4a“MPEG-4 Audio Codec” (page 409)Movie or Sound Track0x20202020mvsz“Maximum Video Size in a Movie” (page 411)Movie0x20202020tvsz“Maximum Video Size in a Track” (page 412)Movie or Video Track0x20202020vfps“Maximum Video Frame Rate in a SingleTrack” (page 414)Movie or Video Track0x20202020tafr“Average Video Frame Rate in a SingleTrack” (page 415)Movie or Video Track0x20202020vvfp“Video Variable Frame Rate Indication” (page416)Movie or Video Track0x20202020ausr“Audio Sample Rate for a Sample Entry” (page417)Movie or Sound Track2012-08-14 | © 2004, 2012 Apple Inc. All Rights Reserved.398