Well, there's no particular difficulty in using ip multicasting instead of many point to point links, giving this priority. In fact, it's a much better idea, since many separate connections often carry the same video/audio data streams, but time shifted, which horribly clogs up routers.
But, unless you've got at least adsl2 speed, will the endpoint connection to home users carry sufficient bandwidth for real time sdtv (never mind hd!)?
Not sure how attractive this is. OK, there's video on demand, films at home, etc. But, does anyone want to "tie up" their expensive Internet connection with stuff available off air anyway? (hmm ... delivering HD this way is dead easy, the BBC won't have to spend any money on extra transmission stuff, just the HD video servers and streamers.....).
What would be nice is tv from around the world, free, or maybe by subscription? But, if - for example - NBC were going to to do this, they would have already on satellite ..... |