Add MPEG-4 Part 2 (ASP) video codec support #156
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wiedymi wants to merge 2 commits intoVanilagy:mainfrom
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Add MPEG-4 Part 2 (ASP) video codec support #156wiedymi wants to merge 2 commits intoVanilagy:mainfrom
wiedymi wants to merge 2 commits intoVanilagy:mainfrom
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Implements reading and writing of AVI (Audio Video Interleave) files, a RIFF-based container format. Features: - Full AVI demuxer with support for multiple video and audio codecs - AVI muxer with RF64 support for large files (>4GB) - Codec mapping for common fourCC codes (H.264, HEVC, VP8, VP9, AV1, etc.) - Audio codec support (AAC, MP3, Vorbis, FLAC, PCM variants, μ-law, A-law) - Index (idx1) generation for seeking - Proper timestamp and duration handling Files added: - src/avi/avi-demuxer.ts - AVI file parser - src/avi/avi-muxer.ts - AVI file writer - src/avi/avi-misc.ts - Codec mappings and utilities - src/avi/riff-writer.ts - RIFF chunk writing utility Integration: - Added AviInputFormat and AviOutputFormat classes - Exported AVI singleton in ALL_FORMATS - Test suite with 7 tests covering format detection, muxing, and demuxing
Implements MPEG-4 Part 2 Advanced Simple Profile video codec using Xvid for encoding/decoding. Features: - Full MPEG-4 Part 2 ASP encoder and decoder - WASM-based implementation using Xvid library - Worker-based processing for non-blocking operation - Support across all containers (AVI, MP4, MOV, MKV) - VOP coding type detection for keyframe identification Package structure: - packages/mpeg4/ - Standalone codec package - Uses Emscripten-compiled Xvid for WebAssembly Codec integration: - Added 'mpeg4' to VIDEO_CODECS list - Codec string mapping (mp4v.20.9 for encoding, mp4v for extraction) - Packet type detection via VOP headers (0x000001B6) Container support: - AVI: XVID/DX50/FMP4/MP4V fourCC mapping - ISOBMFF (MP4/MOV): mp4v sample entry with esds box - Matroska: V_MPEG4/ISO/ASP codec string Tests: - 4 new test suites for AVI, MP4, MOV, MKV with mpeg4 samples - Total 8 tests validating mpeg4 codec support
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@Vanilagy I also rebased this one. But I will double check on everything later, it were done so long ago, so I am not sure anymore, lol |
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Features:
Package structure:
Codec integration:
Container support:
Tests: