With the video compressed, expanded, re-compressed / transcoded, and expanded for your viewing (for all we know, with several different technologies), artifacts and jumpiness are certain. As long as the original exists (I’ll bet that it does), any artifacts created by that technology can be explained. It will be darned near impossible to do something undetected.
Oooooor, don’t actually go watch the video again with the information provided and just post reflexively. That seems to work for you.