[FFmpeg-trac] #3192(undetermined:new): Dropped frames if v4l2 and x11grab are used in filter_complex (was: x11grab drops frames if overlay filter is used)
FFmpeg
trac at avcodec.org
Sat Mar 15 17:37:47 CET 2014
#3192: Dropped frames if v4l2 and x11grab are used in filter_complex
-------------------------------------+-------------------------------------
Reporter: ian_m | Owner:
Type: defect | Status: new
Priority: normal | Component:
Version: git-master | undetermined
Keywords: x11grab | Resolution:
Blocking: | Blocked By:
Analyzed by developer: 0 | Reproduced by developer: 0
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Comment (by jnvsor):
Changing the title since it can be reproduced without overlay, it just so
happens overlay requires both streams to be passed through filter_complex
which seems to be closer to the root of the problem
{{{
ffmpeg \
-f x11grab -i :0.0 \
-f v4l2 -i /dev/video0 \
-filter_complex '[0]null[cap];[1]null[webcam]' \
-map '[cap]' -map '[webcam]' \
-c:v libx264 -y out.mkv
}}}
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Ticket URL: <https://trac.ffmpeg.org/ticket/3192#comment:13>
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