Here's another nice article that discusses the difficulties of HD over the 'net:
It opens with the author explaining that Net Neutrality -- something I strongly support -- is one reason why HD content over the Net won't work.
The Net doesn't play favorites. All data packets are handled the same way; none get preferential treatment for faster delivery. That's fine for nearly every type of traffic. A fraction-of-a-second delay due to network congestion has no practical impact on an e-mail or even a 100-megabyte program download. But the same hiccup can mean the difference between premium and intolerable video. ...
A more likely scenario is that the Internet will eventually prioritize traffic based on the customers who send and receive the data, with those who pay more getting faster service. (Network providers like Verizon may also give preference to their own video services.) This would improve video delivery for big players like the TV networks but would probably shut out low-rent sites that distribute unique, Web-only offerings.
Personally, I would never support sacrificing Net Neutrality even for a cause such as HD content.
However, when most talk about the difficulties of delivering HD content on the Web, they refer to the difficulty of streaming it -- watching it
while it's downloading. Here's what this guy has to say:
While streaming shows the weaknesses of the Internet, downloading plays to its strengths. Bandwidth requirements are far less critical with a download-and-play model than with real-time streaming, and downloading allows you to watch what you want when you want. ...
But the download-and-play model isn't a real solution to the Internet/HDTV intersection problem. The more time-sensitive a program is—sports, the news—the less sense downloading makes. The same goes for massively popular shows: Who wants to wait a day to download American Idol?
But for me, this offers a glimmer of hope. Why couldn't a company -- such a Comcast -- which delivers both cable TV and high-speed Internet offer download-and-watch HD movies?
I'd watch HDTV content like football and the Oscars in real-time via cable and download-and-play HD movies via the Net. (But I'm confused here... if we can get HDTV shows over cable, shouldn't we also be able to get HD movies? What am I missing? Is there a difference between HD-DVD quality and HDTV quality? If there is no difference, technically cable companies, working hand in hand with movie studios, could offer HD movies "On Demand" via cable.)
Well, even if there is a difference between HDTV and HD-DVD, it seems it will still be feasible to download-and-play HD-DVD quality media over the Internet -- but streaming it via the Web doesn't look feasible any time soon.
So, how will the Web and HDTV get reconciled? It's instructive to look at what is happening with cell phones. Wireless carriers now provide cell-phone videos as individual downloads, which increasingly threaten to swamp their data networks. In response, companies like Verizon Wireless are building separate digital broadcast networks to offer television channels specifically formatted for cell phones. These channels won't have high-enough resolution for living room TVs, but they'll offer a better picture than what cell phones currently receive. Wireless carriers will reserve data downloads for niche offerings that customers order individually.
That's a likely model for the big-screen TV system, too.
Full Article.
He goes on to say that traditional broadcasting of HD content will leave Web broadcasts in the dust. Barring some unexpected discovery, he's probably right.
Even so, if movie studios and cable companies were ever to get in bed together -- which probably won't happen unless the studios get really desperate -- I don't see why cable companies couldn't offer a complete catalog of HD movies over cable via the menu system I described above. If HD-DVD sales don't rescue the movie studios, maybe this will happen.
Also, in thinking about DVDs versus digital media, one drawback is the ability to simply take a DVD with you to a friends house to watch it there. However, even though we're talking huge junks of data, I'm sure somewhere down the road, it won't be difficult to simply load a digital movie onto an HD thumbdrive -- which you could then take to a friend's house. Also, one HUGE drawback I have with owning and especially renting DVDs is skipping! I freaking hate skipping! Going disc free would also mean far fewer skips!
I don't know things bout HDs.
Once you watch something in HD, you'll never look at regular TV the same.
Edited by Soupie, 05 October 2007 - 02:41 PM.