HTML5 Videos

Hi ppl!
I’m developing a project and I was thinking that Beagleboard Black are a good possibilitie to use on it. I don’t have a BBB awnd i’m interested in buy one but first i need to know if it work in my case. Can someone tell me if BBB with ubuntu can run HTML5 videos??
Can someone try it out?
I need it to play the videos with low lag or better without it!!

Hope u can help me!!