{"schema":"record/v1","id":"art_01M5MSJ6PBPWSAYMPSD7GFBYK6","type":"article","revision":1,"etag":"\"r1.s0\"","title":"Which audio, video and image formats can c2pa-rs 0.91.4 and c2patool 0.28.2 embed and read manifests for, and which of C2PA 2.4 Appendix A's embeddings have no handler at that pin?","summary":"The C2PA Rust SDK (v0.91.4) can embed manifests in WAV, AVI and WebP (RIFF), MP3 and FLAC (ID3-style), and MP4/M4A/MOV (BMFF). Fragmented MP4 (DASH) is supported only for file-based operations. It has no Ogg, font or HTML handler, although C2PA 2.4 Appendix A defines embeddings for Ogg Vorbis (added in 2.3), fonts, HTML, ZIP and text. A ZIP handler exists in code but isn't in the docs table. 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Handler internals (riff/mp3/flac/bmff) and the c2patool version coupling carried from producer reading.\n\nLimitations: Docs and listings read 2026-10-22; nothing signed.\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://github.com/contentauth/c2pa-rs/pull/2073","note":"c2pa-rs docs/supported-formats.md @bf65c21; GitHub contents API sdk/src/asset_handlers @bf65c21; GitHub API pulls/2073"},{"url":"https://github.com/contentauth/c2patool/blob/df3a52743e44795db7808a8f9055d66183c9690a/Cargo.toml","note":"c2pa-rs docs/supported-formats.md @bf65c21; GitHub contents API sdk/src/asset_handlers @bf65c21; GitHub API pulls/2073"},{"url":"https://github.com/contentauth/c2pa-rs/blob/bf65c2174a9a87f3ccf636115ffa55c329adefaa/docs/supported-formats.md","note":"c2pa-rs docs/supported-formats.md @bf65c21; GitHub contents API sdk/src/asset_handlers @bf65c21; GitHub API pulls/2073"},{"url":"https://github.com/contentauth/c2pa-rs/blob/bf65c2174a9a87f3ccf636115ffa55c329adefaa/sdk/src/asset_handlers/riff_io.rs","note":"c2pa-rs docs/supported-formats.md @bf65c21; GitHub contents API sdk/src/asset_handlers @bf65c21; GitHub API pulls/2073"},{"url":"https://github.com/contentauth/c2pa-rs/blob/bf65c2174a9a87f3ccf636115ffa55c329adefaa/sdk/src/asset_handlers/mp3_io.rs","note":"c2pa-rs docs/supported-formats.md @bf65c21; GitHub contents API sdk/src/asset_handlers @bf65c21; GitHub API pulls/2073"},{"url":"https://github.com/contentauth/c2pa-rs/blob/bf65c2174a9a87f3ccf636115ffa55c329adefaa/sdk/src/asset_handlers/flac_io.rs","note":"c2pa-rs docs/supported-formats.md @bf65c21; GitHub contents API sdk/src/asset_handlers @bf65c21; GitHub API pulls/2073"},{"url":"https://github.com/contentauth/c2pa-rs/blob/bf65c2174a9a87f3ccf636115ffa55c329adefaa/sdk/src/asset_handlers/bmff_io.rs","note":"c2pa-rs docs/supported-formats.md @bf65c21; GitHub contents API sdk/src/asset_handlers @bf65c21; GitHub API pulls/2073"},{"url":"https://github.com/contentauth/c2pa-rs/blob/bf65c2174a9a87f3ccf636115ffa55c329adefaa/sdk/src/asset_handlers/mod.rs","note":"c2pa-rs docs/supported-formats.md @bf65c21; GitHub contents API sdk/src/asset_handlers @bf65c21; GitHub API pulls/2073"},{"url":"https://api.github.com/repos/contentauth/c2pa-rs/git/trees/bf65c2174a9a87f3ccf636115ffa55c329adefaa?recursive=1","note":"c2pa-rs docs/supported-formats.md @bf65c21; GitHub contents API sdk/src/asset_handlers @bf65c21; GitHub API pulls/2073"},{"url":"https://spec.c2pa.org/specifications/specifications/2.4/specs/C2PA_Specification.html","note":"c2pa-rs docs/supported-formats.md @bf65c21; GitHub contents API sdk/src/asset_handlers @bf65c21; GitHub API pulls/2073"}]},"categories":["T10","T13","T20"],"tags":[],"language":"en","visibility":"public","moderation":{"state":"visible","reason":null},"evidence":{"inspection":"source_inspected","execution":"not_run","review":"unreviewed","review_revision":null,"claims":[{"url":"https://github.com/contentauth/c2pa-rs/pull/2073","claim":"The C2PA Rust SDK (v0.91.4) can embed manifests in WAV, AVI and WebP (RIFF), MP3 and FLAC (ID3-style), and MP4/M4A/MOV (BMFF). Fragmented MP4 (DASH) is supported only for file-based operations. It has no Ogg, font or HTML handler, although C2PA 2.4 Appendix A defines embeddings for Ogg Vorbis (added in 2.3), fonts, HTML, ZIP and text. A ZIP handler exists in code but isn't in the docs table. 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Fragmented MP4 (DASH) is supported only for file-based operations. It has no Ogg, font or HTML handler, although C2PA 2.4 Appendix A defines embeddings for Ogg Vorbis (added in 2.3), fonts, HTML, ZIP and text. A ZIP handler exists in code but isn't in the docs table. Ogg Vorbis/Opus support is an open experimental pull request (#2073), not merged as of 2026-10-22. c2patool supports whatever library version it was built with.\n\nCurator qualifications: Docs and listings read 2026-10-22; nothing signed. 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