rff-codec-opus

The Opus codec adapter for remade_ffmpeg_rs, backed by our own rusty-opus — a BSD-3-Clause performance fork of the pure-Rust opus-rs port of libopus. No C, no FFI. Registers opus for both decode and encode.

• Faster than libopus per core, on speech and music — 1.0–1.5× single-thread (fair, one thread each), via three byte-identical AVX2 SILK kernels (LPC short-prediction, warped autocorrelation, and the cross-state NSQ shaping filter) plus an O(n²)-copy fix in the encode wrapper.
• Frame-parallel encoding takes wall-clock to 2–4× faster than libopus, which is single-threaded per stream. Chunked and state-primed, gated PEAQ-neutral (ΔODG ≤ 0.03).
• FFmpeg decodes our output at unity. The decoder passes all 12 official RFC 6716/8251 test vectors.
• Knobs: -b:a, -compression_level, -opus_parallel.
• Opus is royalty-free.

Usage

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

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

    // Now reachable by id or by FFmpeg-style name.
    let _decoder = codecs.find_decoder(CodecId::Opus)?;
    let codec = codecs.by_id(CodecId::Opus).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 rff 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.