Hello, I am using ffmpeg in a big project for video/audio automated processing. Each project for processing requires lots of ffmpeg commands. Those commands are run by a daemon written in ObjC using GnuStep. Since it runs on the background i used -nostdin and -loglevel quiet for production use. To be sure i read everything on stdout and stderr to /dev/null but it should not matter since the command does not output anything. Everything run fine except sometimes a ffmpeg command will hang and i cannot understand why. Sometimes i can see a few % of cpu used by the commands but after hours it was still there. When it happens i have to shutdown my daemon and restart the processing. The same command will then run fine and the process can be finished.
Details of ffmpeg (compiled from source) ffmpeg version n4.0.2 Copyright (c) 2000-2018 the FFmpeg developers built with gcc 4.8 (SUSE Linux) configuration: --disable-programs --enable-ffprobe --enable-ffmpeg --enable-libx264 --enable-gpl --enable-shared --enable-pthreads --enable-libmp3lame --enable-pic libavutil 56. 14.100 / 56. 14.100 libavcodec 58. 18.100 / 58. 18.100 libavformat 58. 12.100 / 58. 12.100 libavdevice 58. 3.100 / 58. 3.100 libavfilter 7. 16.100 / 7. 16.100 libswscale 5. 1.100 / 5. 1.100 libswresample 3. 1.100 / 3. 1.100 libpostproc 55. 1.100 / 55. 1.100 System is : openSUSE 13.1 - 3.11.10-29-desktop The machine is a virtual one running on VMWare. The command that most often hangs is ffmpeg -nostdin -loglevel quiet -y -i front_slide_video.mov -an -r 16.000000 -c:v libx264 -preset slow -b:v 5000k -aspect 1.333333 -vf scale=640:480,pad=640:480:0:0:black front_slide_video-rescaled.mov But i had other commands hanging randomly as well so this is just a sample. Since this is completely random i have no way of testing it. The command that hang works fine if i run it manually and it runs fine most of the time when the daemon runs it. I upgraded from a version 2.X that was running on the previous major version of my software. It's been a few years since i worked on it but i don't recall hangs back in the day with version 2. I had the same problem with 4.0.1 btw. Thanks for your help -- Sent from: http://www.ffmpeg-archive.org/ _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
