TED uses mp4 instead of flv on newer videos

Hi portulaca,

and thank you for the patch. I was a bit out of loop with TED's changes, but thanks to you this will be soon sorted.

I am updating the module and will use a combination of your patch and the existing functionality since TED uses both mp4 and flv (see http://www.ted.com/talks/eric_whitacre_a_virtual_choir_2_000_voices_stro... vs. http://www.ted.com/talks/ali_carr_chellman_gaming_to_re_engage_boys_in_l...)

Fixed in latest 6.x-dev see Commit 0e1deb9