Hi I ran the command - ffmpeg -threads <number of threads> -i <my file.avi> <target.mp4> hoping it would not hog my cpu and consume only one core of my machine. But it was still taking up all of my cpu. I ran the following experiments to confirm my suspicion that including the -threads option has no effect on cpu usage.
1. One instance of ffmpeg with -threads 1 -- results in full cpu usage 2. One instance of ffmpeg with -threads 2 -- results in full cpu usage (similar was the case with -threads 3 and 4) 3. 2 Instances of ffmpeg one with -threads as 2 and the other with -threads 1 -- result both instances used same amount of cpu ~45-48% 4. 3 Instances of ffmpeg all with -threads 1 -- result is the same equal cpu usage summing to ~95% of cpu -threads option as advertised here [0] does not seem to work in that way. I launch ffmpeg from inside a java program and am trying to limit its cpu consumption, can anyone point me in the right direction on how to achieve this. Thanks !! [0] http://stackoverflow.com/questions/4565567/how-can-i-limit-ffmpeg-cpu-usage -- Regards Rohit Talwar _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
