rff-codec-webp

The WebP codec adapter for remade_ffmpeg_rs, backed by our own pure-Rust rusty_webp (a performance/feature fork of image-rs/image-webp 0.2.4).

• Decode VP8 (lossy), VP8L (lossless), and animated WebP (all frames, millisecond pts). Still lossy images without alpha decode straight to their native YUV 4:2:0 planes — video pipelines skip the RGB round-trip, and the output is bit-exact with FFmpeg's webp decoder.
• Encode lossless (VP8L) with LZ77 backward references, color cache, and per-tile predictor selection.
• MIT/Apache-2.0 backing crate; WebP is royalty-free.

Measured vs FFmpeg 8.1.2 (pinned CPU time, ABBA-interleaved, real-content corpus, decoded output verified bit-exact): lossy decode 1.24–1.29× faster, lossless decode ~2.15× faster, lossless encode 1.6–2.8× faster than libwebp's default effort at +4–13% size on photos (and up to 39% smaller on screen content). FFmpeg's native decoder errors on animated WebP; this crate decodes every frame. Lossy encoding is not implemented yet.

Usage

use rff_codec::CodecRegistry;
use rff_core::{CodecId, Error};

fn main() -> Result<(), Error> {
    let mut codecs = CodecRegistry::new();
    rff_codec_webp::register(&mut codecs);

    // Now reachable by id or by FFmpeg-style name.
    let _decoder = codecs.find_decoder(CodecId::Webp)?;
    let codec = codecs.by_id(CodecId::Webp).expect("just registered");
    println!("{} — decode: {}, encode: {}", codec.long_name, codec.can_decode(), codec.can_encode());
    Ok(())
}

Part of Remade With Rust

This crate is one layer of remade_ffmpeg_rs — a ground-up, permissively-licensed Rust rebuild of FFmpeg: a drop-in ffmpeg/ffprobe CLI on pure-Rust codecs, with no copyleft. Most users want the remade-ffmpeg engine facade or the rff-cli binaries rather than this crate directly.

Also check out our sister project FFAI — media for an AI-first world — and the rest of github.com/remade-with-rust, including the standalone codec crates rusty_h264, rusty_vp9, rusty_mp3, rusty_aac, rusty-opus, rusty_vorbis, and the rusty-av1-toolkit forks.

About Mata Network

Mata Network builds sovereign, self-hostable infrastructure. Remade With Rust is our open-source home for the permissively-licensed building blocks that work depends on.

License

Apache-2.0. See the workspace LICENSE.