Steve NTTW4 IETF

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EBML/Matroska IETF Progress Who Am I ? Steve Lhomme [email protected] IETF Participants • Dave Rice • Steve Lhomme • Jerome Martinez • Michael Robertson • Moritz Bunkus • Reto Kromer • Martin Below • Ashley Blewer • Tim Terriberry • many more CELLAR Workgroup https://datatracker.ietf.org/wg/cellar/about/ • FFv1 • EBML • Matroska • FLAC Format Story • Matroska was designed so that any audio/video existing can be stored in it (file, DVD, network capture, metadata) • Matroska can also be used for streaming live content with low latency • Matroska uses EBML binary format • Project fork on 2002-12-06 � IETF Process • Documents are free • Participation is free (except IRL meetings) • Patents disclosed by participants • How the Internet was built • Monthly CELLAR meeting GitHub Commits EBML 695 commits / 12 contributors Matroska 649 commits / 21 contributors Progress • Slower now that EU funding is gone � • Determination to get it done as strong as ever � • A standard created by an open community on free time ✨ EBML • Almost final, may be done in 2019 • Can be used without Matroska • Allows extensions to base format (RAWcooked in Matroska) • May still have further development Matroska • Split three ways • base format for playback • codecs (AV1 most detailed) • tags (metadata about file, chapters, track) • Still a tons of work New • XML Schema to define EBML formats and extensions • Generate the Matroska elements spec • Verify the values are valid • Generate libmatroska/FFmpeg code • EBML pathes (like XPATH for binary) HELP • Matroska core spec needs more refined details • Easiest for A/V people to understand/contribute • Can be all done on GitHub Thank You.

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On Audio-Visual File Formats
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