[mythtv-users] Digital TV info

Brian Foddy bfoddy at visi.com
Tue Mar 18 21:06:49 UTC 2003

I didn't catch the original post, but I've been doing some research and
digging on this topic, with the focus on ATSC HDTV for US signals.

As far as I've found, there is no solution very close to a workable
product.  The links you refer to are for satelite cards, not terestrial.
I've seen two possible fronts, one project to reverse engineer the
MyHD card is in very early stages.  Its an ambitious project considering
there is little or no public info on the primary Teralogic chipset it
uses.  But I'm following it and certainly hope it can make progress.

The second option is the Dvico FusionHD card that should be
available in the US soon.  Its based on a different chipset that is more
open so there is some potential there.  However, unlike the 
HyHD, it doesn't have any Mpeg hardware decoding.  So its primarily
software only, implying very fast cpu requirements to handle a
HD image.  I've heard from people with fast Athlons (1800) that
claim they can barely handle 720p, and not 1080i.  So any solution
will require some very creative software solutions, or some other
hardware help.  Recording the signal is trivial, decoding becomes the

I guess the GNURadio project has also had some success, but again its
software based and the capture card is very expensive.

If someone else has info of work further along, I'd sure appreciate
more info myself.


On Tue, 18 Mar 2003, Edward Wildgoose wrote:

> Someone was asking about digital TV a few days ago.  There are a couple of links which might be generally instructive:
> The "Video Disk Recorder" project is similar to myth, but for digital cards only.  Because the stuff is coming in pre-compressed it appears that very low spec PC is required (the website talks about AMD 450)
> There are also lots of links from that page
> http://www.cadsoft.de/people/kls/vdr/links.htm
> The most useful is probably the second one which take you to linuxtv.org where you can get various drivers for digital video cards.  The implication from the notes shows which cards are cards are equivalent which is quite interesting
> http://linuxtv.org/developer/dvb.xml
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