[FFmpeg-trac] #11314(avdevice:new): "alsa" + "v4l2" capturing had audio stuttering with "-c:a copy"
FFmpeg
trac at avcodec.org
Fri Nov 22 02:50:02 EET 2024
#11314: "alsa" + "v4l2" capturing had audio stuttering with "-c:a copy"
-----------------------------------+------------------------------------
Reporter: chconnor | Owner: (none)
Type: defect | Status: new
Priority: normal | Component: avdevice
Version: 7.0 | Resolution:
Keywords: alsa v4l2 | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 1 |
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Comment (by chconnor):
Ah, sorry:
{{{
ffmpeg -f alsa -ac 2 -i hw:CARD=Cx231xxAudio,DEV=0 -c:a copy test-audio-
only.avi
}}}
...generates a broken file (with same "non-monotonic" errors). Stream is
pcm wav.
{{{
ffmpeg -f alsa -ac 2 -i hw:CARD=Cx231xxAudio,DEV=0 -c:a copy test-audio-
only.mkv
}}}
...generates a working file with no errors reported (!) during capture.
Stream is pcm wav.
{{{
ffmpeg -f alsa -ac 2 -i hw:CARD=Cx231xxAudio,DEV=0 -c:a copy test-audio-
only.mov
}}}
...generates a working file (with same "non-monotonic" errors). Stream is
pcm wav.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/11314#comment:6>
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