[FFmpeg-trac] #7121(undetermined:new): Changing framerate of an MJPEG stream with piping drops malformed images
FFmpeg
trac at avcodec.org
Tue Apr 3 17:56:49 EEST 2018
#7121: Changing framerate of an MJPEG stream with piping drops malformed images
-------------------------------------+-------------------------------------
Reporter: firesharker | Type: defect
Status: new | Priority: normal
Component: | Version:
undetermined | unspecified
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Summary of the bug:
Changing framerate of an MJPEG stream with piping drops malformed images.
How to reproduce:
{{{
% ffmpeg -i test.avi -c copy -f image2pipe - | ffmpeg -f image2pipe
-framerate 10 -i - -c copy out.avi
ffmpeg version 3.2.4 and N-45595-g5710fdaea-static
on ubuntu 16.04 or OS X 10.9.5
}}}
In test.avi and out.avi there should be equal number of frames, but with
10 fps instead of 1.
The same job done with
{{{
ffmpeg -i test.avi -c copy frames%d.jpg
ffmpeg -framerate 10 -i frames%d.jpg -c copy out.avi
}}}
works correctly.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/7121>
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