Support for Event Message boxes

Eyevinn / mp4ff

Library and tools for parsing and writing MP4 files including video, audio and subtitles. The focus is on fragmented files. Includes mp4ff-info, mp4ff-encrypt, mp4ff-decrypt and other tools.

MIT License

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Support for Event Message boxes #359

Closed tobbee closed 1 month ago

tobbee commented 2 months ago

ISO/IEC 23001-18 defines event message boxes that are used for Metadata tracks in CMAF ingest.

In particular the EventMessageInstanceBox emib, and the EventMessageEmptyBox emeb. It also defines the EventMessageSampleEntry format evte.

It would be great if mp4ff could support this boxes and these type of metadata track.