Pure Rust reconstruction of OpenCV + FFmpeg — A patent-free, memory-safe multimedia and computer vision framework.

OxiScope — waveform, vectorscope, histogram and false colour, analysed at 30 fps by Pure-Rust WebAssembly, entirely in your browser. Try it live (your video never leaves your machine — the demo counts the bytes uploaded: 0) or run it locally with ./web/scripts/serve.sh; see OxiMedia Web below.

Live demos: OxiScope (browser scopes + colour pipeline) · OxiLink (peer-to-peer video call with a waveform ghost-trace showing exactly what the codec changed — zero media bytes through any server) — the same WebAssembly modules, running in production twice.

OxiMedia is a clean room, Pure Rust reconstruction of both FFmpeg (multimedia processing) and OpenCV (computer vision) — unified in a single cohesive framework.

Codec encoding and decoding for patent-free formats (AV1, VP9, VP8, Theora, Opus, Vorbis, FLAC, MP3 — encoders are functional across the board; decoder maturity varies per codec, from Verified down to bitstream-parsing-only for Vorbis (AV1, VP9 and VP8 keyframe/intra decode is now real and bit-exact against reference decoders; inter-frame decode is the remaining gap for all three): see the Codec Matrix), container muxing/demuxing (MP4, MKV, MPEG-TS, OGG, AVI, FLV), streaming protocols (HLS, DASH, RTMP, SRT, WebRTC, SMPTE 2110), transcoding pipelines, filter graphs (DAG-based), audio metering (EBU R128), loudness normalization, packaging (CMAF, DRM/CENC), and server-side media delivery.

Computer vision (object detection, motion tracking, video enhancement, quality assessment), professional image I/O (DPX, OpenEXR, TIFF), video stabilization, scene analysis, shot detection, denoising (spatial/temporal/hybrid), camera calibration, color management (ICC, ACES, HDR), video scopes (waveform, vectorscope, histogram), and forensic analysis (ELA, PRNU, copy-move detection).

• Patent Freedom: Only royalty-free codecs (AV1, VP9, Opus, FLAC, and more)
• Memory Safety: Zero unsafe code, compile-time guarantees
• Async-First: Built on Tokio for massive concurrency
• Single Binary: No DLL dependencies, no system library requirements
• WASM Ready: Runs in browser without transcoding servers
• Sovereign: 100% Pure Rust in the default build — as of 0.1.9, cargo check --workspace compiles zero C/C++/Fortran (no aws-lc-sys, libsqlite3-sys, mlua-sys, shaderc-sys, zstd-sys, or openssl-sys in the default dependency graph)

A handful of C-backed integrations remain available behind opt-in, non-default Cargo features — aws-sdk (oximedia-cloud), vulkan-backend (oximedia-accel), lua-scripting (oximedia-automation), quic-quinn (oximedia-videoip). Enabling them accepts the C compilation cost; see Optional C-backed features.

FFmpeg is the de facto standard for multimedia processing, but it is written in C with patent-encumbered codecs (H.264, H.265, AAC), chronic memory safety vulnerabilities, and notoriously complex build systems requiring dozens of system libraries.

OpenCV is the de facto standard for computer vision, but it depends on C++ with complex CMake builds, optional proprietary modules (CUDA, Intel IPP), and heavy system-level dependencies.

OxiMedia unifies both into a single Pure Rust framework with zero C/Fortran dependencies in the default build:

From the FFmpeg world: codec encode/decode, container mux/demux, streaming (HLS/DASH/RTMP/SRT/WebRTC), transcoding pipelines, filter graphs, audio processing, packaging, and media server.

From the OpenCV world: detection, tracking, stabilization, scene analysis, shot detection, denoising, calibration, image I/O (DPX/EXR/TIFF), color science, quality metrics (PSNR/SSIM/VMAF), and forensics.

One cargo add — no battling system library installations, no pkg-config, no LD_LIBRARY_PATH, no brew install ffmpeg opencv.

OxiMedia is a production-grade framework at v0.2.0 (active cycle):

OxiMedia 0.1.7 introduced the oximedia-ml crate — a typed ML pipeline layer built atop the Pure-Rust OxiONNX runtime. Inference is entirely opt-in; the default oximedia build still pulls in zero ONNX symbols and stays C/Fortran-free.

[dependencies]
oximedia = { version = "0.1.9", features = ["ml", "ml-scene-classifier", "ml-onnx"] }

use oximedia::ml::pipelines::{SceneClassifier, SceneImage};
use oximedia::ml::{DeviceType, TypedPipeline};

let classifier = SceneClassifier::load("places365.onnx", DeviceType::auto())?;
let image = SceneImage::new(rgb_bytes, 224, 224)?;
for pred in classifier.run(image)? {
    println!("class {} -> {:.3}", pred.class_index, pred.score);
}

DeviceType::auto() probes the strongest available backend once and memoises the result: CUDA → DirectML → WebGPU → CPU. Each backend is a feature flag (cuda, directml, webgpu); CPU is always available. cuda is native-only; every other backend — including the default CPU path — compiles on wasm32-unknown-unknown.

The oximedia ml namespace ships three subcommands (honour --json for machine-readable output):

oximedia ml list                  # enumerate built-in pipelines + model zoo
oximedia ml probe                 # report GPU backend availability
oximedia ml run --pipeline scene-classifier \
                --model places365.onnx \
                --input frame.png \
                --device auto \
                --top-k 5 \
                --dry-run

Several domain crates gain an onnx feature for an ML-backed fast path while keeping the Pure-Rust default intact: oximedia-scene (MlSceneEnricher), oximedia-shots (MlShotDetector), oximedia-caption-gen (CaptionEncoder), oximedia-recommend (EmbeddingExtractor), oximedia-mir (MusicTagger).

See docs/ml_guide.md for the full feature matrix, per-pipeline I/O contracts, device selection details, WASM support matrix, and roadmap.

Released 2026-07-14. Theme: Sovereign default build, Pure-Rust infrastructure migrations, and deep correctness hardening (Waves 21–30).

• 100% Pure Rust default build: cargo check --workspace now compiles zero C/C++/Fortran. All C-backed integrations moved behind opt-in, non-default Cargo features: aws-sdk (oximedia-cloud), vulkan-backend (oximedia-accel), lua-scripting (oximedia-automation), quic-quinn (oximedia-videoip).
• SQLite via Pure-Rust oxisql: every SQLite-backed persistence path migrated from rusqlite/libsqlite3-sys to oxisql-sqlite-compat — the sqlite features are now Pure Rust too.
• No external protoc required: gRPC schema compilation in oximedia-farm and oximedia-distributed migrated to the pure-Rust protox parser; the system Protocol Buffers compiler is no longer a build prerequisite.
• Real least-squares color calibration (oximedia-calibrate): 3×3 color-matching matrix solved via least squares (B·A⁻¹ with adjugate inverse, conditioning, and rank-deficiency guards), replacing the previous identity stub; ΔE2000 < 2.0 on known-answer tests.
• Polymorphic .cube LUT loader (oximedia-lut): 1D and 3D .cube files load through a single detection path.
• Broadcast-audio correctness fixes: EBU R128 gating power-normalization underread (~42.8 dB) fixed in oximedia-audio; STFT gain (~14 dB) and wow/flutter fixes in oximedia-restore; Hann-window and synthesis attenuation fixes in oximedia-audio-analysis; sub-frame f64 timecode drift eliminated in oximedia-timecode.
• New pro features across Waves 21–30: DTW forced lyric alignment (oximedia-mir), hand-emitted PDF QC reports (oximedia-qc), CEA-608 odd-parity encode/decode (oximedia-captions), mmap-backed HLS/DASH segment store (oximedia-server), BS.1770-4 golden-reference metering tests, anycast/BGP-style CDN routing, ORB/BRIEF cross-frame descriptor caching (oximedia-align), and JWT/webhook fixes in oximedia-server.
• 101,814 tests passing with --all-features (100,160 with default features), 0 failures, 0 clippy warnings, 0 rustfmt diffs, all doctests green — verified 2026-07-13.
• oxiarc-archive 0.3.6 sibling-version mismatch (fixed 2026-07-14): a same-day bump on 2026-07-13 briefly left oxiarc-archive calling APIs not yet present in sibling crates oxiarc-brotli/oxiarc-bzip2/oxiarc-lzma/oxiarc-snappy (then still 0.3.5). Those siblings have since published matching 0.3.6 releases, and cargo check --workspace --all-features now passes clean.

Released 2026-06-02. Theme: Codec completeness, audio restoration, algorithmic depth, and entropy coding improvements.

• SILK encoder with NSQ noise-shaped quantisation (oximedia-audio): Real SILK encoder path with noise-shaped quantisation loop; 440 Hz sine round-trip SNR ≥ 6 dB verified.
• AV1 non-square TX block coefficient decoding fixed (oximedia-codec): CoeffBuffer::pos_to_rowcol now correctly handles non-square transform blocks, fixing a symbol-vs-position bug in AV1 entropy decoding EOB CDF paths.
• AAF binary serializer (oximedia-aaf): Full SMPTE ST 377-1 CFB + KLV binary serializer; 22 previously orphan AAF modules registered and wired into the workspace.
• NDI SpeedHQ Huffman entropy coding (oximedia-ndi): Real Huffman entropy coding for NDI SpeedHQ streams; 22 NDI orphan modules registered and wired.
• DRM software TPM 2.0 emulator + Secure Enclave emulator (oximedia-drm): Pure-Rust software TPM 2.0 emulator and Secure Enclave emulator — enables DRM key protection on platforms without hardware TPM/SE.
• Audio restoration: AR-LPC declick + Boll 1979 spectral subtraction + Wiener denoiser (oximedia-restore): Three new audio restoration algorithms: AR-LPC-based declicker, Boll 1979 spectral subtraction noise reducer, and a parametric Wiener filter denoiser.
• Y4M reader/writer + ITU-T P.910 SI/TI/motion metrics (oximedia-bench): Y4M (YUV4MPEG2) container reader/writer and full ITU-T P.910 Spatial Information, Temporal Information, and motion activity metrics.
• S3 multipart upload with retry + configurable parallelism (oximedia-server): S3 multipart upload with per-part retry logic and configurable upload parallelism for high-throughput media ingest.
• FLAC/Opus/MP3/Vorbis waveform decode wired (oximedia-clips): Clip waveform extraction now uses the real demuxer path for FLAC, Opus, MP3, and Vorbis — replacing stub silence.
• SRT ingest server wired to real SrtListener::accept (oximedia-net): SRT ingest now calls the real SrtListener::accept instead of the previous no-op stub, enabling live SRT stream ingestion.
• AutoCaptionPipeline example refreshed; ONNX/ML pipeline improvements (oximedia-ml, oximedia-caption-gen): AutoCaption example updated to current API; ML pipeline feature flags and ONNX runtime wiring improved across the workspace.
• AnalysisScale Half/Quarter + downsample_box_luma (oximedia-analysis): Configurable downscaling (Full/Half/Quarter) for the analysis pipeline; box-filter downsample; 5 new tests.
• rFFT phase correlation (oximedia-align): phase_correlate_1d now uses oxifft::rfft/irfft (N/2+1 bins, half the complex ops) matching the OxiFFT policy; 4 regression tests.
• DataCite 4.x + PBCore 2.1 + MigrationTriggerPolicy (oximedia-archive-pro): DataCite DOI metadata generation, PBCore metadata crosswalk, and automated format migration triggers; 18 new tests.
• batch_conform + ProxyDbExport / import_with_rebase (oximedia-proxy): Batch EDL conforming with merge strategies, proxy database export/import with root-prefix rebase; 9 new tests.
• SegmentPlan + encode_segments_parallel (oximedia-convert): Keyframe-boundary segment plan with rayon-parallel encode; codec-agnostic concat; 5 new tests.
• scale_tiled + scale_reference (oximedia-scaling): Cache-blocked tiled scaling (bit-exact vs reference), rayon par_iter over tiles; 7 new tests.
• Speech-clarity biquad DRC + SIMD contrast enhancement (oximedia-access): Real speech DSP (4th-order Butterworth 300–3400 Hz, downward DRC, peaking boost) and AVX2/NEON SIMD contrast enhancement with 256-entry gamma LUT.
• NSQ 440 Hz SNR fix (oximedia-codec): SILK LTP coarse-to-fine decimated pitch search, per-subframe contour RD, fractional-lag refinement, round-trip harness.
• Waves 1–20 complete, 100,278 tests passing (0 failures, 0 warnings — cargo nextest run --workspace --all-features).
• Zero clippy warnings workspace-wide; WASM check clean.

Released 2026-04-21. Theme: Full ONNX Runtime integration via the Pure-Rust OxiONNX stack (previously slated for 0.3.0). All inference is feature-gated; the pure-Rust default build stays C/Fortran-free.

• Pure-Rust ONNX inference via OxiONNX: Workspace now depends on the full OxiONNX stack (oxionnx, oxionnx-ops, oxionnx-gpu, oxionnx-directml, oxionnx-proto) instead of the C++ ort runtime — preserves the COOLJAPAN Pure-Rust Policy.
• New oximedia-ml facade crate: Central ML layer exposing OnnxModel, ModelCache (concurrent LRU model cache with ~/.cache/oximedia/models/), TypedPipeline<In, Out> trait, DeviceType::auto() runtime probe, ImagePreprocessor (ImageNet normalize + letterbox + NCHW), and ModelZoo registry.
• Typed pipelines: SceneClassifier (ImageNet-style top-K classifier with softmax/argsort postprocessing) and ShotBoundaryDetector (TransNetV2-compatible sliding window with many-hot hard/soft cut outputs) — more pipelines (AutoCaption, AestheticScore, ObjectDetector, FaceEmbedder) queued for Wave 2.
• Facade ml feature: oximedia::ml module and prelude re-exports gated behind ml (off by default). Sub-features ml-scene-classifier, ml-shot-boundary, ml-onnx for granular opt-in; full feature picks them all up.
• 55 new tests in oximedia-ml: Covers preprocessing, cache eviction, pipeline contracts, and ModelInfo round-trips. Zero clippy warnings. Pure-Rust default build verified — no ONNX symbols linked unless onnx feature is enabled.

Released 2026-04-20.

• MJPEG and APV end-to-end codec support: Full encode/decode pipelines for MJPEG (Motion JPEG) and APV (Advanced Professional Video), including correct MP4 and Matroska sample-entry wiring.
• JPEG encoder/decoder spec compliance: Rebuilt JPEG encoder/decoder to full JFIF/Exif spec compliance; PSNR improved from 6 dB to 32 dB at quality 85.
• AVI container muxer + demuxer: New oximedia-avi crate — pure-Rust AVI muxer and demuxer targeting MJPEG-only streams up to 1 GB (RIFF list size constraint).
• AJXL ISOBMFF animated encoder + streaming decoder iterator: Animated JPEG-XL sequences stored in ISOBMFF with a streaming Iterator-based decoder for low-memory playback.
• CLI MJPEG/APV support: oximedia-cli now accepts -c:v mjpeg and -c:v apv on all transcode/convert commands.
• WASM32 platform support: 5 additional crates (oximedia-codec, oximedia-container, oximedia-audio, oximedia-convert, oximedia-graphics) confirmed clean under wasm32-unknown-unknown.

FFmpeg domain spans Foundation, Codecs & Container, Networking, and Audio layers. OpenCV domain spans Computer Vision, Video Processing, and Analysis layers. Both domains share the Processing Pipeline and Applications layers above them.

┌─────────────────────────────────────────────────────────────────────────────┐
│                              Applications                                    │
│          CLI / Server / Python Bindings (oximedia-py) / Review UI            │
├──────────────────────┬──────────────────────────────┬───────────────────────┤
│   Production Layer   │      Media Management        │    Broadcast Layer    │
│  oximedia-playout    │      oximedia-mam             │  oximedia-switcher    │
│  oximedia-playlist   │      oximedia-search          │  oximedia-routing     │
│  oximedia-automation │      oximedia-rights          │  oximedia-ndi         │
│  oximedia-multicam   │      oximedia-review          │  oximedia-videoip     │
├──────────────────────┴──────────────────────────────┴───────────────────────┤
│                         Processing Pipeline                                  │
│   oximedia-graph (Filter DAG)  ·  oximedia-transcode  ·  oximedia-effects   │
│   oximedia-timeline            ·  oximedia-edit        ·  oximedia-workflow  │
├────────────────┬────────────────┬──────────────────┬──────────────────────-─┤
│ Video Domain   │  Audio Domain  │  Computer Vision │  Quality & Analysis    │
│ oximedia-codec │ oximedia-audio │ oximedia-cv      │ oximedia-quality       │
│ oximedia-vfx   │ oximedia-metering│ oximedia-scene │ oximedia-qc            │
│ oximedia-lut   │ oximedia-normalize│ oximedia-shots│ oximedia-analysis      │
│ oximedia-colormgmt│ oximedia-effects│ oximedia-stabilize│ oximedia-scopes   │
├────────────────┴────────────────┴──────────────────┴────────────────────────┤
│                         Container / Networking                               │
│  oximedia-container  ·  oximedia-net  ·  oximedia-packager                  │
│  oximedia-hls/DASH   ·  oximedia-srt  ·  oximedia-webrtc                   │
├─────────────────────────────────────────────────────────────────────────────┤
│                           Foundation                                         │
│     oximedia-io  ·  oximedia-core  ·  oximedia-gpu  ·  oximedia-simd        │
│     oximedia-accel  ·  oximedia-storage  ·  oximedia-jobs                   │
└─────────────────────────────────────────────────────────────────────────────┘

DRM honesty note. ClearKey (W3C EME JSON) and CENC/AES-128 encryption packaging are real, fully implemented paths. The Widevine, PlayReady, and FairPlay modules implement the license-exchange message formats and a structural CDM emulation, but are non-interoperable placeholders: they do not interoperate with production Widevine/PlayReady/FairPlay license servers or hardware CDMs. Treat them as Experimental per the honesty taxonomy in docs/codec_status.md. (AVI mux/demux lives in oximedia-container; the former standalone oximedia-avi crate was folded in.)

WebRTC DTLS-SRTP is experimental. WebRTC signaling (SDP offer/answer, ICE, real self-signed certificate fingerprints) works, but the DTLS-SRTP handshake and media encryption are not yet implemented. The handshake fails loudly rather than fabricating a connection with all-zero SRTP keys, so no media is ever sent in plaintext under a "DTLS-protected" label. Do not use WebRTC media transport for confidential media until a real DTLS-SRTP handshake ships.

OxiMedia classifies each decoder with a four-tier honesty label so downstream users know exactly what they are getting. See docs/codec_status.md for the full per-decoder breakdown, what is missing, and the effort required to close each gap.

These codecs are NEVER supported due to patent encumbrance:

• H.264/AVC (MPEG-LA)
• H.265/HEVC (MPEG-LA + Access Advance)
• H.266/VVC (Access Advance)
• AAC (Via Licensing)
• AC-3/E-AC-3 (Dolby)
• DTS (DTS Inc)
• MP3 (encoding — Fraunhofer)

# Build the project
cargo build --release

# Run format probe
cargo run --bin oximedia -- probe -i video.webm

# Show supported formats
cargo run --bin oximedia -- info

# Transcode a file
cargo run --bin oximedia -- transcode -i input.mkv -o output.webm --codec av1

use oximedia::prelude::*;

// Probe a media file
let data = std::fs::read("video.webm")?;
let result = probe_format(&data)?;
println!("Format: {:?}, Confidence: {:.1}%",
    result.format, result.confidence * 100.0);

// Transcode with quality control
let pipeline = TranscodePipeline::builder()
    .input("input.mkv")
    .video_codec(VideoCodec::Av1)
    .audio_codec(AudioCodec::Opus)
    .output("output.webm")
    .build()?;

pipeline.run().await?;

cargo add oximedia

or pin the version and pick features in Cargo.toml:

[dependencies]
oximedia = { version = "0.1.9", features = ["full"] }

pip install oximedia

• Source: crates/oximedia-py
• Built with maturin

npm install @cooljapan/oximedia

• Source: oximedia-wasm/
• Built with wasm-pack

cargo install oximedia-cli

WebCodecs gives you the frames. OxiMedia gives you what to do with them. web/ is a separate, nested Cargo workspace + npm package — @cooljapan/oximedia-web — of small, independent WebAssembly modules (scopes, color, scale, quality) that sit downstream of the browser's own WebCodecs decoder: waveform/vectorscope/histogram/false-colour scopes, colour grading + tone-mapping + gamut mapping, Lanczos/Catmull-Rom/Mitchell resampling, and PSNR/SSIM quality metrics, each compiled to wasm32-unknown-unknown in Pure Rust with #![forbid(unsafe_code)], no native dependencies, and no COOP/COEP requirement.

It is intentionally independent of the oximedia-wasm crate above (which publishes @cooljapan/oximedia and covers container demux + Opus/FLAC/AV1 decode) — see oximedia-wasm/README.md for how the two relate. oximedia-web does not depend on the native oximedia-* crates either; its kernels are ported, dependency-free re-implementations sized to fit a strict per-module gzip budget (see web/README.md for measured sizes).

The modules already have two production consumers. The first is the OxiScope demo above. The second is OxiLink — a peer-to-peer, colour-managed, scope-equipped video link built on these same modules: a video call that shows you exactly how much the codec changed your picture, and never sends that picture through anybody's server. Media travels browser-to-browser; the only server-side code is a signalling worker whose full source is published at worker.js.txt (62 lines).

Packaging is prepared; publish is pending. web/package.json is filled in (scoped name, four subpath exports, no dependencies) and web/dist/ builds cleanly from source, but @cooljapan/oximedia-web has not been published to npm — there is no npm install command for it yet. Build and try it locally instead:

web/scripts/serve.sh        # serves web/ at http://localhost:8080, no headers needed
# open http://localhost:8080/demo/ for the OxiScope colorist demo

See web/README.md for the full module table, API pointers (web/js/*.d.ts), browser-support honesty notes, and known limitations, and web/TODO.md for milestone status.

Stable (110 crates): oximedia-360, oximedia-aaf, oximedia-accel, oximedia-access, oximedia-align, oximedia-analysis, oximedia-analytics, oximedia-archive, oximedia-archive-pro, oximedia-audio, oximedia-audio-analysis, oximedia-audiopost, oximedia-auto, oximedia-automation, oximedia-batch, oximedia-bench, oximedia-bitstream, oximedia-cache, oximedia-calibrate, oximedia-caption-gen, oximedia-captions, oximedia-cdn, oximedia-clips, oximedia-cloud, oximedia-codec, oximedia-collab, oximedia-colormgmt, oximedia-compat-cv2, oximedia-compat-ffmpeg, oximedia-conform, oximedia-container, oximedia-convert, oximedia-core, oximedia-cv, oximedia-dedup, oximedia-denoise, oximedia-distributed, oximedia-dolbyvision, oximedia-drm, oximedia-edit, oximedia-edl, oximedia-effects, oximedia-farm, oximedia-forensics, oximedia-gaming, oximedia-gpu, oximedia-graph, oximedia-graphics, oximedia-hdr, oximedia-image, oximedia-image-transform, oximedia-imf, oximedia-io, oximedia-jobs, oximedia-lut, oximedia-mam, oximedia-metadata, oximedia-metering, oximedia-mir, oximedia-mixer, oximedia-ml, oximedia-monitor, oximedia-multicam, oximedia-ndi, oximedia-net, oximedia-neural, oximedia-normalize, oximedia-optimize, oximedia-packager, oximedia-pipeline, oximedia-playlist, oximedia-playout, oximedia-plugin, oximedia-presets, oximedia-profiler, oximedia-proxy, oximedia-py, oximedia-qc, oximedia-quality, oximedia-recommend, oximedia-renderfarm, oximedia-repair, oximedia-restoration, oximedia-restore, oximedia-review, oximedia-rights, oximedia-routing, oximedia-scaling, oximedia-scene, oximedia-scopes, oximedia-search, oximedia-server, oximedia-shots, oximedia-simd, oximedia-spatial, oximedia-stabilize, oximedia-storage, oximedia-stream, oximedia-subtitle, oximedia-switcher, oximedia-timecode, oximedia-timeline, oximedia-timesync, oximedia-transcode, oximedia-vfx, oximedia-video, oximedia-videoip, oximedia-virtual, oximedia-watermark, oximedia-workflow

Component status is per-crate. Within oximedia-codec/oximedia-audio, individual decoder maturity varies (see the Codec Matrix); within oximedia-drm, Widevine/PlayReady/FairPlay are Experimental (see the DRM honesty note above); WebRTC DTLS-SRTP in oximedia-net is Experimental.

As of 0.1.9 the default build is 100% Pure Rust: cargo check --workspace compiles no C, C++, or Fortran whatsoever. All you need is a working Rust toolchain (MSRV 1.87):

rustup update stable
rustup component add clippy

• No protoc required. The gRPC schemas in oximedia-farm and oximedia-distributed are compiled at build time by the pure-Rust protox parser — the external Protocol Buffers compiler is no longer a prerequisite.
• No cmake/shaderc required by default. oximedia-accel builds Pure Rust out of the box (CPU fallback + optional wgpu webgpu backend); the Vulkan/shaderc path is now behind the non-default vulkan-backend feature (see below).
• SQLite is Pure Rust. All sqlite features (e.g. on oximedia-archive, oximedia-dedup) use oxisql-sqlite-compat — no libsqlite3-sys.

A few integrations wrap C/C++ libraries. Each is behind a non-default Cargo feature, so you only pay the C compilation cost (and give up the Pure-Rust guarantee) if you explicitly opt in:

(metal-backend on oximedia-accel is also opt-in; it links the macOS Metal framework via objc FFI rather than compiling C.)

With these features off, oximedia-accel uses its Pure-Rust CpuFallback (plus the optional Pure-Rust webgpu backend), oximedia-cloud uses its pure-Rust HTTP storage paths, oximedia-automation runs without Lua, and oximedia-videoip uses its built-in transports.

# Build all crates
cargo build --all

# Build release
cargo build --release --all

# Run all tests
cargo test --all

# Lint (must pass with zero warnings)
cargo clippy --all -- -D warnings

# Check documentation
cargo doc --all --no-deps

Topic-focused guides live in docs/:

• Codec Status — four-tier decoder taxonomy (Verified / Functional / Bitstream-parsing / Experimental) and per-codec state of the world.
• Rate Control Guide — CBR/VBR/CRF/two-pass modes, VBV buffer semantics, encoder coverage matrix, and CRF-optimiser notes.
• SIMD Dispatch — oximedia-simd CPU feature detection, AVX-512 / AVX2 / SSE4.2 / NEON / WASM tiers, and the safe dispatch convention.
• Wave 5 Deltas — what shipped in 0.1.5 → 0.1.6 (transcode executor, HW-accel probes, BBA-1 ABR, SCTE-35, ErrorContext, FormatNegotiator; stub resolution, exr.rs splitrs refactor, oxifft 0.3.0).
• ML Guide — typed ONNX pipelines, device selection, and the oximedia-ml feature matrix.

• No Warnings: All code must compile with zero warnings
• No Unsafe: #![forbid(unsafe_code)] enforced workspace-wide (except explicitly gated FFI features)
• Apache 2.0: Strictly permissive licensing only
• Clippy Pedantic: All pedantic lints enabled
• Pure Rust: No C/C++/Fortran in the default build (verified in 0.1.9); C-backed integrations are opt-in, non-default features only
• Patent Free: Only royalty-free codecs and algorithms by default (patent-encumbered ProRes decode support is opt-in, feature-gated, for format compatibility)

1. Follow the no-warnings policy
2. Add comprehensive documentation with examples
3. Include unit and integration tests for new functionality
4. Use tokio for all async code
5. Prefer the COOLJAPAN ecosystem (OxiFFT, OxiBLAS, SciRS2) over external C dependencies

OxiMedia is developed and maintained by COOLJAPAN OU (Team Kitasan).

If you find OxiMedia useful, please consider sponsoring the project to support continued development of the Pure Rust multimedia and computer vision ecosystem.

https://github.com/sponsors/cool-japan

Your sponsorship helps us:

• Maintain and improve 114 crates (~2.95M SLOC)
• Implement new royalty-free codecs and CV algorithms
• Keep the entire COOLJAPAN ecosystem (OxiBLAS, OxiFFT, SciRS2, etc.) 100% Pure Rust
• Provide long-term support and security updates

Apache 2.0 — See LICENSE for details.

Copyright 2026 COOLJAPAN OU (Team Kitasan). All rights reserved.

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