On Wed, Aug 18, 2010 at 13:48:51 +0530, vikas khairnar wrote: > I want to rotate .FLV video by 90 degrees can you please tell me how > to rotate it. Look for the "rotate" filter in the video filter ("-vf") section of the documentation. You can test it with mplayer first: mplayer -vf rotate=1 video.avi Moritz