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Dylan M. Taylor 5e892217ed craft-video: MPEG-2 and MPEG-1 video decoder from FilmCraft (mpeg2) (#864 )

* craft-video: MPEG-2 and MPEG-1 video decoder from FilmCraft (`mpeg2`)

FilmCraft's crates/mpeg2v at 4bec22bd moves to craft_video::mpeg2 behind the
decoder-only feature `mpeg2`: sources, README and tests (unit, synthetic
streams checked by ffmpeg, the ffmpeg oracle fixtures, hostile sweeps).

Changes in the move: craft-media-testkit instead of filmcraft-testkit, one
test target (tests/mpeg2), crate paths, rustfmt at this repo's width.

New: a memory budget (Decoder::set_memory_budget, craft_video::budget) checked
when a sequence becomes active, and a mutation test over the synthetic
field-picture, 16x8 and dual-prime streams, which ffmpeg's encoder cannot
produce and the hostile sweep therefore never reached.

* craft-video mpeg2: write the restart check without a negated conjunction (clippy nonminimal_bool)

2026-11-11 17:42:02 -05:00

examples

craft-video: H.264 decoder from FilmCraft, with DeckCraft's hardening (h264-decode) (#834 )

2026-11-11 15:25:33 -05:00

src

craft-video: MPEG-2 and MPEG-1 video decoder from FilmCraft (mpeg2) (#864 )

2026-11-11 17:42:02 -05:00

tests

craft-video: MPEG-2 and MPEG-1 video decoder from FilmCraft (mpeg2) (#864 )

2026-11-11 17:42:02 -05:00

tools

craft-video: HEVC decoder from FilmCraft, with DeckCraft's hardening (hevc-decode) (#828 )

2026-11-11 14:24:30 -05:00

Cargo.toml

craft-video: MPEG-2 and MPEG-1 video decoder from FilmCraft (mpeg2) (#864 )

2026-11-11 17:42:02 -05:00

README.md

craft-video: MPEG-2 and MPEG-1 video decoder from FilmCraft (mpeg2) (#864 )

2026-11-11 17:42:02 -05:00

README.md

craft-video

Clean-room pure-Rust video codecs for the Craft apps, one feature per codec: DNxHD/DNxHR, VP8, ProRes and H.264.

Input and output are byte slices and planar sample buffers; the crate opens no files itself and performs no filesystem I/O.
Implemented from published standards and RFCs (SMPTE ST 2019-1, RFC 6386, SMPTE RDD 36 and ITU-T H.264).
Tested against ffmpeg as an external oracle with roundtrips, hostile fuzzing, and conformance vectors. No unsafe, no panics on corrupt streams. Builds for wasm32-unknown-unknown.
Containers (MP4/MOV, Matroska/WebM), bit-level I/O (craft_media::bitstream) and shared identifiers (CodecId, CodecParams) come from craft-media.

Cargo features

No codec feature is on by default.

Feature	Module	Codec
`dnx`	`dnx`	Avid DNxHD / DNxHR (SMPTE ST 2019-1 VC-3): decoder and encoder
`apv`	`apv`	APV (Advanced Professional Video, RFC 9924): decoder (`apv-decode` alone) and encoder (`apv-encode` alone)
`vp8`	`vp8`	VP8 (RFC 6386): decoder
`mpeg2`	`mpeg2`	MPEG-2 video (ITU-T H.262) and MPEG-1 video (ISO/IEC 11172-2): decoder
`prores`	`prores`	Apple ProRes (SMPTE RDD 36): decoder and encoder
`h264`	`h264`	ITU-T H.264 / AVC: decoder (`h264-decode` alone) and encoder (`h264-encode` alone)
`hevc`	`hevc`	ITU-T H.265 / HEVC: decoder (`hevc-decode` alone) and encoder (`hevc-encode` alone)
`vp9`	`vp9`	VP9: decoder (`vp9-decode` alone) and encoder (`vp9-encode` alone)
`av1`	`av1`	AV1 (AOMedia Video 1): encoder
`threads`	—	Multi-threaded slice/row parallelism via `rayon`