These source files are already encoded and download from internet, here and there. Im re-encoding and re-sizing them and also want to bring a standard to their resolutions and aspect ratio. They are to be streamed on the internet when I finish them. So the target is browser media players and they are to be watched full screen %99 of the time.
Is cropping and/or adding black borders are only way to avoid the shrinks and stretches while changing aspect ratio?
I guess I really need a dummy-proof guide, not a more technical article.