Originally Posted by Grant
What kind of compression technology is being used by providers that makes the OTA superior?
The last part is pretty subjective..
its not really subjective when you know what you are seeing. blacks look more gray and digital artifacts are prevalent.
Another reason the company is able to launch now is its use of MPEG2 compression, the same technology employed by most traditional cable operators. The newer MPEG4 compression can squeeze video into smaller bandwidth spaces but is just now coming to market and remains comparatively expensive. In addition, the codecs for high-definition MPEG4 won't be in the hands of carriers until at least the end of the year, and programmers have yet to adopt the technology.
“I'm not surprised that Verizon's not doing MPEG4, even on the VOD, because none of the content is available in MPEG4 so that would just add another layer of expense,” Mastrangelo said.
To handle the proliferation of bandwidth-intensive HDTV broadcasting, DirecTV rebroadcasts local HDTV stations using the H.264/MPEG-4 AVC codec while employing a newer transmission protocol (DVB-S2) over the SPACEWAY-1 and SPACEWAY-2 satellites. This allows DirecTV to squeeze much more HD programming over its satellite signal than was previously feasible using the older MPEG-2 compression and DSS protocol it has been using.
DirecTV is defending a lawsuit that alleges DirecTV lowered HDTV picture resolution below that of the industry's accepted definition of HDTV. 1080i is generally understood to mean 1920 x 1080i, whereas DirecTV reduces these channels by one third, to 1280 x 1080i. DirecTV boldly maintains that its high definition picture quality is comparable to or better than that of any other television service.