[WIP] Global Metadata in WebM

Last updated: 2012-02-21

Background

WebM global metadata is based on the Matroska tag specification. This document describes where the formats differ.

Tag Elements

Official Tags

TBD

Official Matroska tags

Format Guidelines

• • the Tags element SHOULD be placed at the end of the file to allow for trivial updates

• TagName SHOULD appear before the tag data, i.e., TagString, TagBinary

• a SimpleTag SHOULD NOT contain other SimpleTags

  • when concatenating multiple files new Segments should be used to avoid merging tags common to each file