У вашего броузера проблема в совместимости с HTML5
Finally! ... get to show off my Toastrack. Having had video issues where it did not like my Scart to HDMI so the Byte Delight ZX-HD to the resue... but had to wait for a 2nd Raspberry Pi to make things offcial and work in the ZX-HD. Guess the 1st one was out of sorts. New one arrived and so far... all is well!
Enjoy the excitement as I unbox my Toasty and get to use it playing my own game I am making, Invasion of the Cloud People.
*Funny I called it an "Apple Pi" card. LOL