[whatwg] HTML5 video <source> dimensions and bitrate

[Tab Atkins Jr.]

It *appears* that the minimum you're asking for is some way to include
the bitrate/etc. information in the <source> element so that you can
switch between them in js, right?  You're not trying to add something
that will cause changed browser behavior?

In that case, your solution already exists - use the data-*
attributes.  <source src=foo data-jw-bitrate=2> works just fine.  In
existing browsers you can access the attribute with
elem.getAttribute('data-jw-bitrate'), and in future browsers it'll be
elem.data['jw-bitrate'].

~TJ