Hi, I would like to add this topic to the forum: Hi, In the ffmpeg Documentation there is this command for Select the pass number (1 or 2): ffmpeg -i foo.mov -c:v libxvid -pass 1 -an -f rawvideo -y NUL ffmpeg -i foo.mov -c:v libxvid -pass 1 -an -f rawvideo -y /dev/null But it is only for Windows and Unix. Does anyone know what the command is for Apple Mac?