Dear all, When i converted a mpe file to a MJPEG avi without audio, i found 1 pass constant bitrate is no exact as i expected. i.e. ffmpeg -i g:\dog.mpg -b 200 -s 128*96 -r 15 -an g:\mjpeg.avi But i get the file's bitrate is 242.5kbps rather than 200kbps. How can i get a exact bitrate? thanks wulan