Off Topic » Xmedia Recode Scaling Mode??

Hello,

I use Xmedia Recode 3217 Video Converter for all my video processing needs.
Doe anyone know what the "Scaling Mode" does, please? I read that it has something to do with Up scaling or Down scaling but I am not sure what this really means in practice(?) I have always just used the converter to copy the mp4's and I adjust colour saturation; brightness... etc. The results have always looked good. I wouldn't understand if I would need Up or Down scaling or not..

thanks

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video for small business