In HTML5, different browsers support different formats of video

Does it mean that I need videos of multiple formats so that it can be played on different browsers by addi开发者_StackOverflow社区ng multiple sources to the tag?

I'd recommend that you stay away from W3Schools as sadly it's full of errors and mistakes. Adding video to your website with HTML5.

this page has a rather exhaustive discussion about the various formats of video supported by various browsers http://diveintohtml5.ep.io/video.html

Yes unfortunately you do... I think the browser just selects the right forward from what you have available on your server.

check out this neat tutorial on html5 video integration: http://www.w3schools.com/html5/html5_video.asp