Ticket #1639 (closed defect: fixed)
concat filter frozen
|Reported by:||chinshou||Owned by:|
|Blocking:||Reproduced by developer:||yes|
|Analyzed by developer:||yes|
The concat filter cause ffmpeg frozen.
prepare any mp4 video , rename it to 1.mp4. then copy it to 2.mp4.
finally execute following command to join the two videos
ffmpeg -f lavfi -i "movie=1.mp4, scale=512:288 [v1] ; amovie=1.mp4 [a1] ;movie=2.mp4, scale=512:288 [v2] ; amovie=2.mp4 [a2] ;[v1] [v2] concat [out0] ; [a1] [a2] concat=v=0:a=1 [out1]" join.avi
ffmpeg begin to encoding successfully , but frozen at 50% .
I used the ffmpeg 20120810 windows build from
I investigate the code and found the frozen caused by av_read_frame , the call will be blocked at 50% position.
- Keywords concat added
- Status changed from new to open
- Version changed from unspecified to git-master
- Reproduced by developer set
- Analyzed by developer set
- Keywords movie added; concat removed