[opendtv] Re: A/72 goodies
- From: "John Willkie" <johnwillkie@xxxxxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Wed, 17 Sep 2008 15:34:30 -0700
Tom;
I'm not aware of any satellite company that uses ATSC standards. So, this
would be outside of any "system requirements."
John Willkie
-----Mensaje original-----
De: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx] En
nombre de Tom Barry
Enviado el: Wednesday, September 17, 2008 3:25 PM
Para: opendtv@xxxxxxxxxxxxx
Asunto: [opendtv] Re: A/72 goodies
I thought one of the satellite companies was also using 1280x1080i. If
so I'm surprised that's not one of the accepted new ones.
- Tom
Manfredi, Albert E wrote:
> What used to be called Table 3, I think, which is actually Table 6.2 of
> ATSC A/53, has caused much displeasure over the years, for not allowing
> enough frame formats.
>
> Well, with H.264 all of this has changed. Check out Table 6.3 of the new
> A/72 standard. It adds:
>
> 25 Hz and 50 Hz frame/field rates,
>
> and frame formats
>
> 176 X 120
> 352 X 240
> 352 X 480
> 528 X 480
> 544 X 480
> 720 X 480
> 1440 X 1080
>
> over and above what A/53 already lists.
>
> 704 and 720 horizontal can optionally be used for 4:3 or 16:9 aspect
> ratios. But formats less than 704 horizontal are always 4:3, and greater
> than 720 horizontal are always 16:9.
>
> But even more exciting, among these choices is now 1080 at 50p and 1080
> at 60p. Wow.
>
> So, does anyone really think that AVC in ATSC is only slated for use
> with the M/H standard?
>
> Bert
>
>
> ----------------------------------------------------------------------
> You can UNSUBSCRIBE from the OpenDTV list in two ways:
>
> - Using the UNSUBSCRIBE command in your user configuration settings at
FreeLists.org
>
> - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word
unsubscribe in the subject line.
>
>
----------------------------------------------------------------------
You can UNSUBSCRIBE from the OpenDTV list in two ways:
- Using the UNSUBSCRIBE command in your user configuration settings at
FreeLists.org
- By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word
unsubscribe in the subject line.
----------------------------------------------------------------------
You can UNSUBSCRIBE from the OpenDTV list in two ways:
- Using the UNSUBSCRIBE command in your user configuration settings at
FreeLists.org
- By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word
unsubscribe in the subject line.
Other related posts:
