YIRAN LI <mrfun.china <at> gmail.com> writes: > ffmpeg.exe -i big_buck_bunny.mp4 -c:v mpeg4 -profile:v 15 > -vtag DIVX -bufsize 3080000 -maxrate 8000000 -bt 8000000 > -minrate 0 -an a.avi
As said, this command is missing a video bitrate. > ffmpeg.exe -i big_buck_bunny.mp4 -c:v mpeg4 -q:v 4 -profile:v 15 > -vtag DIVX -bufsize 3080000 -maxrate 8000000 -bt 8000000 > -minrate 0 -an a.avi The bitrate-related options make no sense when used with constant quality. At some of point in time you have to decide: * Either you encode with the default bitrate that FFmpeg uses (and that is extremely low) and get bad quality. * Or you set constant quality which can have the effect of very high bitrate (that you cannot limit). * Or you set a constant and an identical maximum bitrate to get high quality with an upper bitrate limit. Please do not report that the default bitrate is low nor that constant quality may produce high bitrate: Both are not bugs. Carl Eugen _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user