ffmpeg -i input -vf transpose=2 -vcodec libx264 -vpre medium -crf 22
-threads 0 -acodec copy output.mp4
(or
mencoder -vf rotate=1 input.mpg -o output.mpg -oac copy -ovc lavc)
the latest ffmpeg provides much better quality.
Dennis
On 2/13/12 8:16 PM, Nathan Sims wrote:
My mum recorded a video on her iPhone, but while accidentally holding the
iPhone upside down. Consequently, the movie is upside down. Isn't there a way
to rotate the video 180 degrees? It seems the on-phone controls only let you
trim the video.
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