У вашего броузера проблема в совместимости с HTML5
This is a short vid about how to remove the annoying datestamp on the D001 or MD80 video during post. This process will also work on other videos with date/time stamp or logos/watermarks, you'll just need to adjust the settings to match your scenario.
Sorry it's not very in-depth, but hopefully you'll get the idea.
VirtualDub
http://www.virtualdub.org/
Logoaway
http://www.softpedia.com/get/Multimedia/Video/Other-VIDEO-Tools/Logoaway.shtml