#11440: Specific Opus had glitched playback in Matroska container
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Reporter: fenlaz | Owner: (none)
Type: defect | Status: closed
Priority: normal | Component: avformat
Version: git-master | Resolution: invalid
Keywords: mkv | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 1 |
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Changes (by mkver):
* keywords: matroska => mkv
* resolution: => invalid
* status: new => closed
Comment:
The Opus track contains lots of DiscardPadding elements in the middle of
the stream:
{{{
mkvinfo -a "/tmp/Shangri-La Frontier - 20 [BD 1080p x265
OPUS][DUAL][Anipakku].mkv" | grep -B 3 -A 1 'Discard padding'
| + Block group
| + Block: track number 2, 1 frame(s), timestamp 00:00:03.000000000
| + Frame with size 691
| + Discard padding: 666666
| + Block duration: 00:00:00.019000000
--
| + Block group
| + Block: track number 2, 1 frame(s), timestamp 00:00:05.020000000
| + Frame with size 522
| + Discard padding: 333334
| + Block duration: 00:00:00.020000000
--
| + Block group
| + Block: track number 2, 1 frame(s), timestamp 00:00:08.040000000
| + Frame with size 432
| + Discard padding: 666666
| + Block duration: 00:00:00.019000000
--
| + Block group
| + Block: track number 2, 1 frame(s), timestamp 00:00:13.060000000
| + Frame with size 442
| + Discard padding: 333333
| + Block duration: 00:00:00.020000000
...
}}}
In a normal file, only the last Block contains a DiscardPadding element.
There probably is a bug in the tools/the workflow used to create this
file, but that can't be investigated with only the output file and would
be a different bug anyway. So I am closing this as invalid.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/11440#comment:2>
FFmpeg <https://ffmpeg.org>
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