Why doesn't loop work on video element in Chrome?

Question

HTML

I'm trying to make a simulated GIF using MP4, but for some reason it refuses to work loop for video elements in Chrome browser. Moreover, Chrome works fine for one MP4, but not for the second MP4. Maybe someone faced such a problem? Tell me please.
Here is a test page with two small videos (~200 KB):
amvnews.ru//test/2015.03/test.html
In FireFox, both pictures work fine, in Chrome one works, the second does not.

Answer 1

The result after a couple of experiments:
From this we conclude that the latest Chrome has a new bug when decoding some quite valid H.264 streams. While there is no reason to believe that you will encounter many such problematic videos - just transcode it again. If the problem is massive, then it will be fixed in Google Chrome itself.