HD is a sales gimmick. ( or scam to be nasty)
One dirty little secret that people are forgetting or that they don?t understand, IT?S NOT HD they?re getting over the Internet. Heck it?s not even NTSC 480i (720×480 60 fields interlaced) DVD quality when you really look at the amount of video data you?re getting!
If you look at a professional HD format which uses a compression of 4:1 Panasonic's D5 it captures 1080x1920 25 p at 269 Mbits / second.
Blu Ray' 1920 x 1080 25p (30p in US ) still has 25-36 Mbits / second.
Anyone with photoshop know that the resolution is only one factor that the picture needs the color and lumience information to reduce the picture quality to shit to keep a big size fools no one.
Internet speeds do not permit quality Standard Definition yet. DVD quality would be better than material pretending to be HD. It is the bit rate.
Another factor is that if the computer cannot manage the large files it just drops the frame rate, so the may be watching a 1920 file at 6,000 bit / sec but at 5 frames per second.
More info here
http://www.zdnet.com/blog/ou/why-hd-...-a-big-lie/511