[opendtv] Re: 480i 16:9 with pillarboxed image

  • From: Craig Birkmaier <craig@xxxxxxxxx>
  • To: opendtv@xxxxxxxxxxxxx
  • Date: Thu, 27 Dec 2012 06:44:53 -0500

At 9:25 PM +1100 12/27/12, Ciril & Anita Kosorok wrote:
"Then, if the image is 4:3, as it often is with SD material, just transmit
two black pillars. So even people who don't have AFD can set their monitors
to 16:9 and leave it there. You lose a slight amount of horizontal res that
way, in 4:3 material, but hard to notice. Most 4:3 material is way low res

It's been done this way in Australia since the commencement of DVB-T
broadcasting; way back in the year 2000.

Now it is time for the really important NEXT STEP.

Deinterlace all of these old shows and transmit as 480P.

640 x 480 for 4:3 source

853 x 480 for 16:9 source

And the most important step...

Replace MPEG-2 with h.264 - or by the time broadcasters get their act together, h.265.

And while we are at it, include higher frame rates for sports - at least 72P, and possibly 120P.

And make all of this variable, based on the bandwidth available for transmission. Thus you could have 853 x 480 @ 72P or 120P for lower bandwidth channels, 1280 x 720 @ 72P etc. And you could vary frame rates based on scene content.

For what it is worth, the OTT streaming services already do most of this, except for variable frame rates, using h.264.

Looks like the moving picture industry is finally waking up form its hundred year sleep...

High Frame Rate-What Is Enough?



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