[linux-dvb] Re: hdtv & dvb

[Peter Urbanec <linuxtv.org.dvb@urbanec.net>]

Robert Schlabbach wrote:

> It's only broadcasting HDTV demo loops, though. But in contrast to EURO1080
> this service is broadcasting "true" 1080i at 59.94 fields/sec, whereas
> EURO1080 uses an uncommon 50 fields/sec.
>  
It seems a bit strange for a PAL continent to go with NTSC drop frame 
programming.

Here in Australia, most HD channel content is dual purposed and you get 
the HD programs on both HD channels and downscaled on SD channels. You 
also get some broadcasters providing all their SD content upscaled on 
their HD service. Since most of the SD stuff is then output via STBs to 
normal PAL TV sets, the footage needs to be broadcast at PAL frame 
rates. You also get STBs that will output downscaled HD channels on 
standard SVideo / Composite connections as PAL. Again, you can't expect 
this gear to perform on the fly NTSC to PAL conversion that is 
watchable. So the only logical choice for HDTV in a PAL country is 50 
fields/s, unless you insist that access to HDTV content is limited to 
those who chuck out their existing equipment and replace it with gear 
that is capable of both NTSC and PAL at HDTV resolutions.

Peter.

--
   "Beauty lies in the hands of the beer holder."




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