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Parse and generate the RFC 6381 ObjectTypeIndication codec strings shared by a whole family of MPEG codecs: mp4a.<OTI>[.<audio object type>] and mp4v.<OTI>[.<profile-level>], e.g. mp4a.40.2 (AAC-LC), mp4a.69/mp4a.6B (MP3), mp4v.20.9 (MPEG-4 Visual), mp4v.61 (MPEG-2 Video). OTI is normalized to two uppercase hex digits; the OTI and AAC audio object types are decoded to names in toHumanReadable(). Wired into codecInfoFactory via the mp4a/mp4v prefixes.
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🎉 This PR is included in version 0.8.0 🎉 The release is available on: Your semantic-release bot 📦🚀 |
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Adds the RFC 6381 ObjectTypeIndication scheme (
mp4a/mp4v), which covers a whole family of MPEG codecs with one parser: AAC (mp4a.40.2), MP3 (mp4a.69,mp4a.6B,mp4a.40.34), MPEG-4 Visual (mp4v.20.9), MPEG-2 video/audio, DTS, etc.Format verified against RFC 6381 §3.3 (OTI = two hex digits, optional decimal third element) and the mp4ra object-type registry.
Mp4Infodecodes the OTI and AAC audio object types to names; output normalized to uppercase hex. 29 tests; full suite 254 passing.feat:→ minor bump (0.8.0).