The ffmpeg default value for i_qfactor option is -0.8 How the negative values works for this option? The mencoder default is 0.8 (man page). André L. Magalhães -- View this message in context: http://ffmpeg-users.933282.n4.nabble.com/i-qfactor-values-tp4653964.html Sent from the FFmpeg-users mailing list archive at Nabble.com.