[FFmpeg-user] ffmpeg mp4 encoding with cfr is not working
Carl Eugen Hoyos
cehoyos at ag.or.at
Fri Jun 21 09:03:30 CEST 2013
Sangsu Baek <sangsu.baek <at> gmail.com> writes:
> Is there any hint to fix this matching problem ?
You reported that you need 15fps output and provided
the following status line:
frame= 194 fps= 17 q=5.3 Lsize= 401kB time=00:00:12.93
As explained, this status line indicates that your
output is exactly 15fps (194 / 12.93).
(Apart from the fact that ffmpeg ... out.mp4 can
only produce constant frame rate because the mp4
muxer does not support anything else.)
If you are worried about the fps indicator in the
status line: It is a performance indicator that
cannot work for v4l2 input.
(It works insofar as you know the encoding does
not work if the performance indicator indicates
a lower performance than the fps rate that you
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