0 Fork 0

mirror of https://github.com/storytold/craft-libs.git synced 2026-11-14 06:22:24 +00:00

Files

T

alehel 1df8d98c85 craft-video: MPEG-2 encoder, first step: I and P pictures (#1133 )

The start of MPEG-2 encoding in craft_video::mpeg2 (feature
mpeg2-encode): progressive frame pictures, closed I/P GOPs, 4:2:0 Main
Profile and 4:2:2 Profile, constant quantiser or single-pass average
bitrate with adaptive quantisation, half-sample motion search.

The encoder shares the decoder's code tables, IDCT, dequantisation and
motion compensation, so the decoder outputs exactly the encoder's
reconstruction. B pictures, a VBV guarantee, interlaced coding and DVD
or broadcast presets are later steps of #1133.

The mpeg2 feature is split into mpeg2-decode and mpeg2-encode; mpeg2
still turns on both.

2026-11-13 07:34:05 +01:00

examples

craft-video: FilmCraft's later H.264 encoder work (High 10, threads, sub-pel diamond) and its H.264 and ProRes tests

2026-11-11 22:43:42 -05:00

src

craft-video: MPEG-2 encoder, first step: I and P pictures (#1133 )

2026-11-13 07:34:05 +01:00

tests

craft-video: MPEG-2 encoder, first step: I and P pictures (#1133 )

2026-11-13 07:34:05 +01:00

tools

craft-video: AV1 decoder from FilmCraft, with DeckCraft's hardening (av1-decode) (#836 )

2026-11-11 17:43:10 -05:00

Cargo.toml

craft-video: MPEG-2 encoder, first step: I and P pictures (#1133 )

2026-11-13 07:34:05 +01:00

README.md

craft-video: MPEG-2 encoder, first step: I and P pictures (#1133 )

2026-11-13 07:34:05 +01:00

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 (`mpeg2-decode` alone); MPEG-2 encoder with I and P pictures (`mpeg2-encode`, which also turns on the decoder)
`mpeg4`	`mpeg4`	MPEG-4 Part 2 video (ISO/IEC 14496-2, the Xvid/DivX format): Simple profile encoder (`mpeg4-encode`)
`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): decoder (`av1-decode` alone) and encoder (`av1-encode` alone)
`threads`	—	Multi-threaded slice/row parallelism via `rayon`