R
robtsk
Guest
Sensualpoet, you've got some misinformation going here. 720p isn't moving half the bitrate of 1080i, it's moving less data at 60fps instead of 30fps. The frame rate is not very different, with 720p being slightly fewer bits. 1080i should look better on static scenes, and 720p should look better with rapid movement (e.g. sports, which is why ESPN (and parent ABC) went for it).
How could you possibly get a real 720p PBS feed, since all PBS infrastructure and transmission is in 1080i? If someone transcoded, I'm not surprised it wouldn't look as good; going 720p to 1080i would lose, too.
Not at the same bitrate - MPEG4 is just more efficient because of the newer compression algorithms.
"It's all digital"? That neglects critically important factors like the bitrate, which all providers play with to some degree.
How could you possibly get a real 720p PBS feed, since all PBS infrastructure and transmission is in 1080i? If someone transcoded, I'm not surprised it wouldn't look as good; going 720p to 1080i would lose, too.
Not at the same bitrate - MPEG4 is just more efficient because of the newer compression algorithms.
"It's all digital"? That neglects critically important factors like the bitrate, which all providers play with to some degree.