Concatenate: Audio and Video out of sync after a couple of rounds
|Reported by:||Timster||Owned by:|
|Blocking:||Reproduced by developer:||no|
|Analyzed by developer:||no|
Summary of the bug:
There is an issue with concatenating video files. After several rounds of concatenation, the audio and video desync. The issue also occurs when just concatenating one video file with itself several times so it can't be due to video/audio settings being incompatible with each other. Different containers/settings as well don't change anything.
This is the command I am using:
ffmpeg -f concat -i <(for i in
seq 5; do printf "file %s\n" /path/to/*.mkv; done) -c:v h264 -preset slow -b:v 1500k -minrate 1500k -maxrate 1500k -bufsize 1500k -g 80 -c:a copy out1.mkv
It is a regression - I've have tested it with the static build ffmpeg.static.64bit.2014-07-16 - it is working there. With my ppa build or the git build it doesn't. The output is attached - produced with the ppa build.
Change History (9)
comment:3 by , 6 years ago
|Component:||ffmpeg → undetermined|
|Keywords:||concat added; ffmpeg concatenate desync audio video removed|
|Priority:||important → normal|