[FFmpeg-user] Encoding from video input results in damaged video

[Karl Karpfen]

What I can see during encoding are a lot of these outputs;

[alsa @ 0x9194c0] ALSA buffer xrun. 1131kB time=00:00:03.16
bitrate=2922.2kbits/s dup=32 drop=0
[alsa @ 0x9194c0] ALSA buffer xrun. 2400kB time=00:00:05.34
bitrate=3674.8kbits/s dup=41 drop=0
[alsa @ 0x9194c0] ALSA buffer xrun. 2951kB time=00:00:05.70
bitrate=4237.3kbits/s dup=44 drop=0
[alsa @ 0x9194c0] ALSA buffer xrun. 5735kB time=00:00:09.20
bitrate=5101.7kbits/s dup=108 drop=0
[alsa @ 0x9194c0] ALSA buffer xrun. 5894kB time=00:00:09.50
bitrate=5077.8kbits/s dup=111 drop=0
[alsa @ 0x9194c0] ALSA buffer xrun. 6167kB time=00:00:09.91
bitrate=5093.5kbits/s dup=117 drop=0
[alsa @ 0x9194c0] ALSA buffer xrun. 8051kB time=00:00:14.18
bitrate=4648.1kbits/s dup=205 drop=0
[alsa @ 0x9194c0] ALSA buffer xrun. 8318kB time=00:00:14.91
bitrate=4568.5kbits/s dup=221 drop=0
[alsa @ 0x9194c0] ALSA buffer xrun. 8482kB time=00:00:15.51
bitrate=4478.4kbits/s dup=236 drop=0

They do not appear when there is no signal at video0 (means when the video
source does not give a picture).



2016-01-25 18:58 GMT+01:00 Lou <lou at lrcd.com>:

> On Mon, Jan 25, 2016, at 08:20 AM, Karl Karpfen wrote:
> [...]
> > Any ideas how to correct this?
>
> There is not enough information here to provide any answers. You should
> include the complete console output from your ffmpeg command. Also, the
> output of "v4l2-ctl --list-formats-ext" will provide useful info.
>
> What player did you test? Does it make a difference if you omit the
> audio?
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