I notice this issue I have when I render anything out higher than, or equal to around 1280x720, and it's fullscreen counterpart resolution. The video seems to artifact out into blocks that don't 'update' and stay the same image, kinda like artifacts in a jpeg image. It will break up like this at set points in the video, not at transitions or any other sort of hot spot you'd expect, and playing the video in various players such as the Divx web player, vlc, windows media player, media player classic all break at the same points. I've seen this happen to videos I've viewed in the past from others, but I am not sure what causes it, and how to prevent it.
I'm rendering out in Xvid, from source files at 1280x720. I've fiddled around a lot with the codec settings for the Xvid codec, but the only thing that seems to produce this breaking effect is higher resolutions, so I'm stuck rendering at almost half of that, 640 320 ish.
If needed I can try rendering out at this resolution to produce the effect, but I can't predict where it will happen so I'll have to take some time to render out a lengthy video just to find where it happens etc.
Thanks in advance, and sorry if this issue has been solved before (point me to a solution if it's already on the forums) I tried searching for what I think I'd call this but I'm stumped as to how to exactly describe it.
EDIT: Currently uploading the broken file I recently made, and thankfully(I guess) it has the issues I've described. I'd appreciate it if someone could take a gander and maybe have some insite as to what the issue is, and how to solve it. I can provide more info on exactly what options I've used, not used, for the encoder etc.