On Mon, Feb 9, 2015 at 3:32 PM, thibault75 <thiba...@capitalvision.fr> wrote: > I've got some video in 4/3 and other one in 16/9. > I want to transcode this video to 1024x576 which is 16/9 ratio. > > If it's a 4/3 i want black to be add on each side of the video and if it's a > 16/9 i just want video to be resized.
ffmpeg -i input.mp4 -vf "scale=-2:576, pad=1024:576:(ow-iw)/2:(oh-ih)/2" output.mp4 The -2 takes care of upscaling at multiples of 2, and 576 is the desired output height. It will not change the aspect ratio. The pad filter will pad the video to a full size of 1024x576, placing the video at the exact center (which is output width - input width divided by two, same goes for height). _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user