Interesting, because most of the websites, I just get the URL for the .mp4 stream and my Raspberry just plays the file. BTW, mas raspberry does not have flash installed, and it decodes in the hardware.
What I'm asking is just an application that allows to place an URL to an remote (on the internet) content, like:
(dummy link, just for explaining)
As we can do with VLC (Media > Open Network Stream... > Enter URL ). It must be really simple. I did it to my raspberry (that runs a server that gives me and web based interface) and that I use now connected to the TV, but I would like the TV to do it.