[opendtv] Re: something

  • From: "John Willkie" <johnwillkie@xxxxxxxxxxxxx>
  • To: <opendtv@xxxxxxxxxxxxx>
  • Date: Thu, 27 Nov 2008 20:53:12 -0800

AVC is permitted today, John, and has been for several months
http://www.atsc.org/standards/a_72_part_2.pdf

The key here is the MPEG-2 (2007) normative reference [4] which I am told (I
have yet to actually read the corrigendum) permits the appropriate number of
samples.

John Willkie

-----Mensaje original-----
De: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx] En
nombre de John Shutt
Enviado el: Thursday, November 27, 2008 7:50 PM
Para: opendtv@xxxxxxxxxxxxx
Asunto: [opendtv] Re: something

1080p60 is not an ATSC transmission format using MPEG 2, but could easily be

accommodated in the future using the AVC codec.  (But probably won't due to 
the incompatibility with existing receivers.)

Ditto with Blu-Ray or other sources (DBS or cable for instance.)  They can 
easily accommodate 1080p60 in the future using an advanced codec.  1080p60 
native in a display leaves room for future growth.

From your own link, current Blu-Ray and HD-DVD are at best 1080p24, with 
convoluted means of synthesizing 1080p60:

"Another example of 1080p processing, is the Samsung BD-P1000 Blu-ray Disc 
Player - what is does is even more complicated. This Blu-ray player reads 
the 1080p/24 signal off the disc, then it actually reinterlaces the signal 
to 1080i, and then deinterlaces its own internally made 1080i signal in 
order to create a 1080p/60 signal for output to a 1080p input capable 
television. However, if it detects that the HDTV cannot input a 1080p 
signal, the Samsung BD-P1000 just takes its own internally created 1080i 
signal and passes that signal through to the HDTV, letting the HDTV do the 
final deinterlacing step. "

John


----- Original Message ----- 
From: "Cliff Benham" <flyback1@xxxxxxxxxxx>


> What I mean is... "1080p/60 is essentially the same frame repeated twice 
> every 30th of a second. (enhanced video frame rate)."
>
> http://hometheater.about.com/od/televisionbasics/qt/1080ivs1080p.htm
>
> I don't see 1080p60 in your list below, so my question is does it exist 
> only in HDTV sets as an upconversion capability, and as
> an HDMI output format in Blu Ray players? But NOT as a transmission 
> format?

 
 
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