I have a source video file that was shot for TV (4:3 ratio), and I would like to resize it for 16:9 ratio displays. How can I add the appropriate amount of black letterboxing on the sides so that the source video is not stretched/distorted?
In the screen shot here you can see I have cropped the video clip slightly to get rid of a few extra black pixels on the sides and top of the video. This is just to get a more symmetrical, clean cropping. Next I need to add the correct amount of black space on the sides to prevent stretching but I'm unsure of how best to do this.
Thanks in advance for any help!