Support livestream on-demand clips

[jeroen]

It completely slipped my mind that we need on-demand implementation as well. This will allow users to add a 'clipID' parameter that will tell the player to play a specific clip from their on-demand library.

I've started the implementation for that, adding the clipID parameter and running a timer to update the seek bar but I can't figure how to make the player seek when the user clicks on the seek bar. I tried overriding the seek() method but that doesn't seem to do the trick. Can you take a look at it ?

[jeroen]

I forgot to provide you values to test with, you can try:

file=livepaultv livestream.clipid=flv_e4025e83-26e5-4850-8b95-e4383efc4fb8

Which should get you one of our old promotional videos.

[jeroen]

Livestream model with clip support, by Paul Schumacher