Convert a video to black and white on Ubuntu
First: Install MPlayer
sudo apt-get install mplayer libxine-extracodecs
If you can not install libxine-extracodecs, skip it.
Then: Convert your video
mencoder color-video.avi -o black-white-video.avi -vf hue=0:0 -oac copy -ovc lavc
or
mencoder color-video.avi -o black-white-video.avi -vf hue=0:0 -oac pcm -ovc lavc
Good luck:)
