Av1an
Description
Cross-encoder command-line orchestrator for AV1/H.264/H.265/VP9 encoding. Splits input by scene detection, dispatches chunks in parallel across aom, rav1e, SVT-AV1, vpx, x264, and x265, and targets a desired VMAF via automatic CRF/target-quality search. Supports resuming, video-audio-subtitle piping, and distributed encoding.
Resource details
- Category path
- Encoding & Codecs›Open Source Encoder Projects
- Classification
- Not yet classified
Av1an is cataloged in Encoding & Codecs and Open Source Encoder Projects.
URL
Related resources
- RefractGuided AVIF/JPEG XL/WebP conversion tool using an iterative quality-search ("optometrist") approach.
- xin26xFrom-scratch HEVC/H.26x encoder written in plain C, claims 4x speed vs x265 single-core.
- jxs (JPEG XS reference)Reference software implementation of ISO/IEC 21122-5 (JPEG XS) including jxs_encoder binary, supports PNM/PGX/raw YUV/RGB input.
- Cool-chic: Coordinate-based Low Complexity Hierarchical Image/Video CodecUltra-low-complexity overfitted/coordinate-based learned video codec using ~800 parameters, with companion open-source implementation.
- OpenDCVCs: Reproducible PyTorch Reimplementation of the DCVC Codec SeriesIndependent open reimplementation with training+eval code of the whole Microsoft DCVC learned video codec family (prior official releases w…
- AV1 Encoding with libsvtav1 on QencodeThe libsvtav1 encoder (SVT-AV1) is an AV1 implementation tuned for both compression efficiency and parallel performance. This guide covers…
- Differentiable VMAF Re-implementation on PyTorchDifferentiable PyTorch reimplementation of VMAF metric enabling gradient-based codec/RDO optimization, with companion code.
- Performance Comparison of AV1, JEM, VP9, and HEVC EncodersFraunhofer HHI SPIE 2017 paper comparing codec internals, BD-BR, and complexity across AV1, JEM, VP9, and HEVC.
- nano-hevcMinimal educational HEVC encoder written in pure Python, readable-over-fast, for teaching codec internals.
- Opus (xiph/opus)Reference implementation of the Opus audio codec, recently adding deep-learning-based packet loss concealment.
- dav1d.wasmWASM port of the dav1d AV1 decoder, SIMD-optimized with TypeScript interfaces, aimed at production use in browsers.