I am not sure exactly what it is but I have seen this in videos I have edited. Usually I exported with some weird setting usually a mix of codecs and encapsulator formats or w.e or some bit rate issue.
Clearly theres something wrong because other videos arent being uploaded with this issue.
thanks for the free ufc fights btw.
just to be clear you see the grainy/ wavyness.
This bugs me too, for at least a year now their free fight vids have looked like shit. I appreciate the fact that they upload these vids for free but I can't believe who ever uploads these doesn't give a fuck about the quality when it's really obvious.
If I understand correctly, you want Zuffa to make it easier for you to reproduce their fights? 
Needlemover - If I understand correctly, you want Zuffa to make it easier for you to reproduce their fights?Exactly I run that site the re uploads them all!
Kirik's top men are on it
When I'm watching replays on fight pass the quality of the picture when there's a scramble is horrendous. The picture goes grainy and small lines appear.
Needlemover - If I understand correctly, you want Zuffa to make it easier for you to reproduce their fights?No. Sounds like he wants Zuffa to upload videos at a reasonable high definition quality that most if not all media distributors learned to do years ago.
https://youtu.be/NEgVh5S3PoQ?t=375
That's an example of the lines you see, I've included a time in the link where there's lots of motion going on. That video was uploaded over a year ago, its been the same way for each free fight for ages now.
It might not be a big deal to some, and of course it free but just because it is free I don't understand why they are ok with uploading videos like that, it looks garbage. All other vids are ok, it's just these free fight ones.