[FFmpeg-user] How to crop block borders from top and bottom using ffmpeg

[Roger Pack]

> How to crop black borders from top and bottom of video using top and
> bottom. Actually I'm using a 16:9 video which I want to convert in to 4:3
> while retaining aspect ratio. So, first I would like to remove borders and
> then convert the file back to exact size and then add enough borders to
> make it 4:3. Please advise.

http://ffmpeg.org/ffmpeg.html
search for "crop"
:)
-r