[MEncoder-users] rotate an MP4 by 90 degrees

[Daniel Kirsten]

On Thursday 11 December 2008, Grozdan wrote:
> yuv4mpeg:file=output.y4m

I tried 

gmplayer -vo yuv4mpeg:file=output.y4m -vf rotate=3 example.mp4
yuv4mpeg < output.y4m > output.mp4

Something went wrong...   the original file is 103Mb large, 
output.y4m and output.mp4 are 5600 Mb large. 

gmplayer output.mp4 flickers and has a wrong aspect ratio, 
sound is missing.

Daniel