[mythtv-users] unlikely idea (QAM output)

[Emery Guevremont]

Dan Ritter wrote:
> Not all, but most HDTVs have QAM tuners and MPEG2 decoders built
> into them.
>
> Is there a consumer or semi-pro box that can take an MPEG2 TS from 
> PCI, USB, FireWire or ethernet and put it into QAM64 or QAM256
> format to go across a short coax run to an HDTV?
>
> Obviously the chips must exist; all the DOCSIS cable modems use
> QAM encoding for the uplink (as well as downlink) portions.
>
> The advantage for MythTV owners is an HD display connection that
> might impose less CPU and graphics-card demand -- best case
> scenario, it might be possible to do 1080P playback from a
> very low powered device. Constructing OSD might be a problem.
>
> I'm going to guess that the answer to this is that there aren't any
> such devices available for less than $bigbucks, since they are
> only considered to be of use to TV stations. But I'd be pleased
> to find out otherwise.
>
> -dsr-
>   
I don't know if such a device exist. But I'd like a video card that 
output in clear qam through a coax cable. The advantage of this is I 
could use my home's existing coax wiring for feeding my HDTV.