utility
capture stream
$ mplayer -dumpstream -dumpfile fromstreaming
$ mplayer "URL" -ao pcm:file=/home/name/Musik/mystream.wav -vc dummy -vo null;
$ mplayer -dumpstream http://192.168.1.4:8090/test.webm -dumpfile b
use subtitle
$ mplayer -sub <subtitles.srt/sub> <file.extension>
rotate
mencoder -vf rotate=1 -o OUTPUT.AVI -oac copy -ovc lavc INPUT.AVI
mencoder -ovc lavc -lavcopts vcodec=mjpeg -vop scale=640:480 -oac copy BIGOUTPUT.AVI -o FINAL.AVI
mencoder -oac copy -ovc lavc -lavcopts vcodec=mjpeg -vop rotate=1 00250.avi -o 00250_rot.avi
mencoder -forceidx -ovc copy -oac copy -o file.avi p1.avi p2.avi ...
mencoder -ovc lavc -lavcopts vcodec=mjpeg -vf rotate=1 -oac copy input.avi -o rotated.avi
mencoder -oac copy -ovc lavc -vf rotate=1 original.mp4 -o 90_CW_rotated.mp4
mencoder -oac copy -ovc lavc -vf rotate=2 original.mp4 -o 90_CCW_rotated.mp4