У вашего броузера проблема в совместимости с HTML5
I grew tired of the lack of quality Brutal Doom videos so I've decided to make my own. This is a playthrough of Doom as seamless as I can make it (no saves, no map, no cheats) and as complete as I reasonably can make them without getting boring.
This playthrough was completed with:
GZDoom
http://www.osnanet.de/c.oelckers/gzdoom/index.html
Brutal Doom v19 (Sperglord Edition)
http://forum.zdoom.org/viewtopic.php?f=19&t=37889
Brutalized Doom (Overkill Edition)
http://forum.zdoom.org/viewtopic.php?f=19&t=32929