BlueZero <[email protected]> added the comment: Ok, so simple example:
this command takes 2 hours and 22 minutes: ffmpeg -i 1438523.mp4 -an -pass 1 -vcodec libx264 -vpre slow_firstpass - vpre ipod640 -b 512k -bt 512k -threads 0 -f ipod 1438523v1.mp4 and this command takes only 24 seconds: ffmpeg -i 1438523.mp4 -an -pass 1 -vcodec libx264 -vpre slow_firstpass - vpre ipod640 -b 512k -bt 512k -threads 0 1438523v2.mp4 the only difference between these two commands is "-f ipod". And this makes about 350 times slower. I dont know if i should call it bug, performance problem or something else, but it seems to be something wrong there. ---------- substatus: needs_more_info -> open ________________________________________________ FFmpeg issue tracker <[email protected]> <https://roundup.ffmpeg.org/issue2234> ________________________________________________
