Displaying 2 results from an estimated 2 matches for "libwebm".
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libwebp
2012 Aug 07
0
Recorded webm file can be played, but much faster than expected
...he generated webm file is something OK. I can hear something when playing it. However, the playback speed will be much faster than expected. E.g. If I record the voice for about 30 seconds, then the generated webm file can only be played for 2-3 seconds. The generated file can be parsed normally by libwebm program, but the block granulepos seems not normal. Most of the differences of the adjacent granulepos's are 2-3 millisecond, also few are 12-13 or 22-23 milliseconds.
Is there anything wrong with my steps? Any clue?
If you need more information for the investigation, please let me know....
2014 Jan 07
2
Opus in WebM
...ludes Opus support. Naturally, I *think* I'm doing it right, but I'd love for someone more knowledgeable about Opus or WebM to take a look.
The closest thing to a standards document for putting Opus into WebM is here:
http://wiki.xiph.org/MatroskaOpus
The muxing library I'm using (libwebm) doesn't seem to let me set these SeekPreRoll, CodecDelay, and DiscardPadding fields. Are these related to Opus' pre-skip field? SeekPreRoll is supposed to be standard, but there's no way to force the encoder to use a certain pre-skip, is there?
While granulepos in the Ogg container...