Format Description Categories
Browse Alphabetical List
MPEG-4, Advanced Video Coding, Main Profile
Format Description Properties
- ID: fdd000083
- Short name: MPEG-4_AVC_MP
- Content categories:
- Format Category:
- Other facets:
unitary, binary, sampled
- Last significant FDD update:
- Draft status: Full
Identification and description
||Information technology -- Coding of audio-visual objects (formal name); MPEG-4, Advanced Video Coding (part 10), Main Profile
||Main is the middle of the three original MPEG-4_AVC profiles (Baseline, Main, and Extended) in terms of complexity and the demands it places on a decoder. The Main Profile is constrained in several ways, but may include intra (I), predicted (P), and bidirectional (B) slice types (slice is the MPEG-4_AVC term for a single macroblock or a set of macroblocks that make up a portion of an individual picture.) For a discussion of additional constraints and the levels that may be used in this profile, see Appendix A in Part 10 of the standard, pp. 204-211.
||Generally a final-state (end-user delivery) format.
|Relationship to other formats
MPEG-4, Advanced Video Coding (Part 10) (H.264)
MPEG-4 File Format, V.2, with AVC, Main Profile
|LC experience or existing holdings
Quality and functionality factors
|Clarity (high image resolution)
||See MPEG-4_AVC. Depends in part on the level and encoding algorithm selected. The Main Profile will produce greater clarity than the MPEG-4_AVC_BP (Baseline Profile) at a given picture size and data rate but less than the MPEG-4_AVC_EP (Extended Profile). The clarity in all three of the original profiles is surpassed by the four FRExt (Fidelity Range Extension) profiles: MPEG-4_AVC_HP, MPEG-4_AVC_H10P, MPEG-4_AVC_H422P, and MPEG-4_AVC_H444P.
|Functionality beyond normal rendering
File type signifiers and format identifiers
|Internet Media Type
||See related format.
||See related format.
|File type brand (ISO Base Media File Format)
||Indicated in file wrapper and relates to "brands" defined in ISO_BMFF. Wrapping MPEG-4_AVC bitstreams in MP4_FF_1 would occasion the use of mp41; in MP4_FF_2, use mp42.
|Indicator for profile, level, version, etc.
||For profile_idc; Annex A of Part 10 of the standard, pp. 204-05.
- ISO/IEC 14496-10:2003 Information technology -- Coding of audio-visual objects -- Part 10: Advanced Video Coding
- ISO/IEC 14496-15:2003 Information technology -- Coding of audio-visual objects -- Part 15: Advanced Video Coding (AVC) file format
Last Updated: Tuesday, 21-Feb-2017 08:55:46 EST