[opendtv] Re: Global standard

  • From: Craig Birkmaier <craig@xxxxxxxxx>
  • To: opendtv@xxxxxxxxxxxxx
  • Date: Mon, 30 Apr 2012 13:34:22 -0400

At 10:20 AM -0400 4/30/12, Mike Tsinberg wrote:

So what would be ideal package of most widely used Internet transport and
compression protocol if it's adopted to broadcast? Let's assume each channel
is 20 Mb/s, the modulation, RF power and tower spacing stay the same. Can we
fit two or more 1080i signals into that channel?


1080i?
Please, you won't find much if any of this being streamed via the Internet, as it is far to inefficient to encode. 1080@24P is quite common, but for higher frame rates 720P, or a lower resolution progressive encoding, is what is most common on the Internet.
It is time to let go of interlace, 59.94, and maybe even 50P. A more logical heirarchy for the future would be: 

24P for film

36P for talking head and low motion video

60 and/or 72P for rapid motion.
Nothing new here. We suggested this and demonstrated the advantage during the final decade of the last century... 

Regards
Craig


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