So here's the issue. I find a video or a couple of videos I want to watch and open them. I manage to watch some, everything is fine. But then some of the videos I want to watch have problems to the point where they either can't load or suddenly stop loading and corrupt part way through. In either case, I have to reload the page multiple times, or leave it then come back into it, perhaps by clicking the link again, then either the video works, or it corrupts in a DIFFERENT part. Even pressing the DOWNLOAD button to go to a different page has the same thing. Has this happened to you? I ask, because I know a video that got flagged for being corrupted multiple times until people realized it may have been something on their end, or something like that. After that, I kept occasionally seeing videos where people would flag it for being corrupted, but then admit in the comments it seemed to work fine later. And I feel like it HAS to be from e621's system, because the videos that kept screwing up were perfectly fine at the source, that mainly being Twitter and whatnot. So, again, has anyone else experienced this problem? Let me know, because it's driving me crazy right now.

It does sound like a problem on your end, I'd say try clearing your cookies but the way you describe it doesn't sound like that would be the case. Are you using any extension that might alter the site's functionality? If so, try disabling them.

Save it locally and see if it still happens with VLC or another native player. If the download doesn't complete, this could happen? Hardware acceleration issues? It almost sounds like something wrong with your browser or video drivers (if using acceleration). Other possibility is just not enough video RAM but I've only had that problem on some system with just onboard video and no actual GPU + <64MB of video memory stolen from main RAM. Yeah, my old server board without a dedicated graphics card. XD Of course, Chrome hated it, and sometimes made me exit all programs to make ANY program behave.