Re: HTML5 support for track metadata

Actually, I missed the "Web app access only to metadata text tracks." con in inBandMetadataTrackDispatchType, so my corrected pros/cons list is:

Alternative     Pros    Cons
In-band Metadata TextTrack

  *   Allows JS to look at previous and future metadata (possibly not useful?).
  *   Allows us to keep the data as binary.
  *   DataCue was created for this purpose.


  *   Mixing metadata with cues is possibly inelegant.
  *   Possible complexity regarding old cues.


In-band Metadata Attribute

  *   Metadata as an attribute seems more elegant.
  *   Allows us to keep the data as binary.




inBandMetadataTrackDispatchType

  *   Metadata as an attribute seems more elegant.


  *   Need to encode binary as a string.
  *   Metadata is only accessible on text tracks.