Hmmm.. I live in Portugal, and therefore I have a question regarding this vague, supposed challenge:
"However Marko said that it's possible to cram HDTV over a basic DSL connection without glitches (...)"
Whithout going into the details, I wonder what he means by a basic DSL line. What speed it that: 1 mbps, 2, 4 ? It's just that what is said is not a novelty.
Here in Portugal we have Triple-pay (TV, Phone, Internet) services over DSL, and that includes HD channels. The thing is, when you're watching an HD channel, you might not be able to browse the net at comfortable speeds. So, that said, it is possible to cram HDTV over DSL, but that is a given. Tell me I can cram two at the same time, or that I can browse at something like 10Mbps at the same time, and that would actually be a novelty.
The maximum theoretical 24mbps of ADSL is just that - phone lines on the street are old, prone to the weather all year, and the distances to the substations is farther away than desirable. That said, the investment needed to revamp the lines is not worth the potential, and that is why we are now transitioning to fiber optics, with basic speeds starting at 5mbps and going all the way up to 100mbps, all within affordable prices. There is also 200mbps and a 1gbps offering, but it is substantially more expensive.
The portuguese PT (Portugal Telecom) in collaboration with a university I think, actually developed a box that allowed remote interior locations on the countryside to get adsl connectivty, and that was a big achievment.
So that said, I wonder what this kid has done.. is it software or hardware? Did he manage to compress the HD signal is a new way ? Or did he manage to increase the available bandwidth of the noisy phone line through some even better filtering technology ?