[Matroska-devel] (no subject)

Chris Cunningham chcunningham at google.com
Sat Feb 28 03:39:15 CET 2015

+ Steve, author of this addition.

On Fri, Feb 27, 2015 at 6:27 PM Chris Cunningham <chcunningham at google.com>

> Hey Matroska!
> First, let me apologize if I'm asking an answered question. The mailing
> list search function is a bad link
> <http://lists.matroska.org/swish/swish.cgi>.
> I work on Chromium Media and we've seen a little confusion from content
> creators around a line that was added
> <https://github.com/Matroska-Org/foundation-source/commit/d3931e8f58898b9d673661fd7221b4704ffc917b>
> to the Matroska spec <http://www.matroska.org/technical/specs/index.html>
> for BlockDuration (and whether it should be used in WebM):
> "When set to 0 that means the frame is not a keyframe."
> Just curious about the history/motivations for this. WebM's container
> guidelines don't mention this and AFAIK WebM (de)muxers just use
> ReferenceBlocks ... is there an edge-case where that doesn't work out?
> Thanks,
> Chris
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