On 06/29/2011 07:11 AM, Donovan wrote: > We're doing some video encoding using FFMpeg and we're getting some > videos coming in that are rotated and would like to automatically > detect the rotation and flip them. From what I've been able to > research, there is a rotation flag/variable in the files that say if > it's rotated and to what degree (ie: 90, 180, etc). I can't for the > life of me figure out how to find this info. I've tried using > mplayer/midentify but it doesn't seem to display anything. > > I know it can be done as processing the same videos through > encoding.com shows the rotation value but we're trying to roll our own > solution. Hoping somebody else has run into this. > I just had some videos come off my ipod and they were rotated. I don't know how to automatically detect the rotation, but to fix it I found I just needed to add -vf "transpose=1" to the commandline.