[FFmpeg-user] Transcoding Iphone Portrait videos to DVD
rogerdpack2 at gmail.com
Thu Aug 9 15:03:22 CEST 2012
> 1) Rotate the video by 90* clockwise.
> 2) Adjust the video to be in DVD NTSC/ PAL format (4:3) such that the video
> is not scaled/ distorted.
> It is okay to crop/ pad to adjust the video to a different width/ height.
> I can easily do 1) by using "-vf transpose=1".
> But I am having a bit of problem doing 2) above.
Assuming you know the aspect ratio previously, you could add some "pad" to it:
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