[FFmpeg-trac] #5850(avdevice:open): Using Hauppauge HD-PVR fails (streaming I/O)
FFmpeg
trac at avcodec.org
Fri Sep 16 22:10:37 EEST 2016
#5850: Using Hauppauge HD-PVR fails (streaming I/O)
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Reporter: naums | Owner:
Type: defect | Status: open
Priority: normal | Component: avdevice
Version: git-master | Resolution:
Keywords: v4l2 | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by naums):
Replying to [comment:5 cehoyos]:
> Replying to [comment:4 naums]:
> > to the first to commenters: these work but only for mere seconds, then
the device shuts itself off and the video freezes.
>
> Not sure I understand:
> The following works perfectly well?
> {{{
> $ cat /dev/video0 > test.mp4
> }}}
This works perfectly well.
> But this does not?
> {{{
> $ cat /dev/video0 | ffplay -
> }}}
This works for about five to ten seconds, the video freezes and the device
shuts its light off, the last frame sticks. There is btw. a latency of
about four seconds from executing the command to seeing the first frame
(the device introduced some latency of about a second, the rest seems to
be ffplay).
Is there any way to give more information that might help you? Is it for
example possible to see the filling-percentage of internal video buffers?
--
Ticket URL: <https://trac.ffmpeg.org/ticket/5850#comment:6>
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