[opendtv] Re: Possible new DVB-S3 "standard" ?
- From: Craig Birkmaier <craig@xxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Fri, 11 Jan 2013 11:31:06 -0500
At 6:53 PM -0600 1/8/13, Manfredi, Albert E wrote:
Anyway, I think UHDTV can be deployed easily enough, over cable and
terrestrial anyway, *if* the hype about codecs is real. My idea
would be (mostly applicable to OTA):
1. Hold the hypesters' feet to the fire. Demonstrate that H.265
compression is in practice 4 times as efficient as H.262 (MPEG-2
compression).
2. Downres existing MPEG-2 HD broadcast streams to SD streams, and
replace each HD stream with a H.265 UHD stream. This UHD should take
up the same b/s as the HD stream of today. This step may possibly
remove one SD subchannel, assuming the station is using its
multiplex to max capacity (which is doubtful).
3. During the transitional period, make available low-cost STBs that
are UHD-capable, and can output HD and SD of any broadcast.
4. At the end of the short transitional period, eliminate the SD
version of the UHD streams, to quit wasting bandiwdth. Possibly,
start transmitting even the SD channels with H.265 compression and
really do this right.
Cable systems can follow this same approach, although they are
already wasting bandwidth with SD copies of HD broadcasts.
Bert
Are you suggesting ANOTHER DTV transition?
;-)
Regards
Craig
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