[opendtv] Re: 1080p@60 for MPEG-2

  • From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
  • To: <opendtv@xxxxxxxxxxxxx>
  • Date: Sun, 11 Nov 2007 19:10:18 -0500

Craig Birkmaier wrote:

> Why would the creation of a new MPEG-2 level help anyone?

It would help only if it existing encoding systems and/or receivers, or
a large percentage of these, can be updated easily. Otherwise, of
course, might as well bite the bullet and introduce a new codec. Ditto
if the stream won't fit in existing DTV channels.

The ITU paper said that the advantage of using MPEG-2 in the 1080 at 60p
mode was cost. Quoting:

"A large number of display and capturing devices will support
1080@60p/50p in the near future and it is urgently desired to add
support for these video formats in the existing MPEG standard.
Complexity is one of the biggest issues for such applications,
especially for software solution. Although AVC(14496-10 | H.264)
supports such video formats, complexity is too high for some
applications, especially simple software based applications, because of
high demand of CPU and memory resources. In addition, it is not always
possible to assign the entirety of the available CPU resource to the
video decoder in some applications. We believe that there is a great
demand for MPEG-2 video, especially for software based solutions. MPEG-2
video is the appropriate format for such applications, in terms of both
complexity and picture quality."

> This is backward looking legacy technology trying to sole a
> problem that has already been solved with better technology.

If you open the other zipped files, you'll see that they are also adding
AVC modes. For studio or ultra high def purposes.

"Legacy technology" is *always* considered, Craig. It's called "good
engineering."

Bert
 
 
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