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
`vp8`	`vp8`	VP8 (RFC 6386): decoder
`prores`	`prores`	Apple ProRes (SMPTE RDD 36): decoder and encoder
`h264`	`h264`	ITU-T H.264 / AVC: encoder
`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`