[mythtv] Re: Adding DVB-T support to MythTV

[Michael Kedl]

I'm just throwing this out since you are looking for a way to make your
own v4l source.

I saw that the linux motion project here:
http://motion.sourceforge.net/vloopback/index.html
creates a loopback v4l interface. You should be able to do what it does.
This would also be a useful link to the people looking at integrating
motion sensors and cameras...

This seems like a painful way to get all this working; but things are
often tough the first time.
Maybe I'll look into getting a card if you get it working well :-)

Mike

On Tue, 2003-03-18 at 07:56, matt.jarvis at philips.com wrote:
> I have also posted this suggestion to the list. See my earlier post
> with my idea about channel changing scripts - what is needed is
> something to parse a seperate config file between channel numbers and
> dvbtune frequencies. As far as acutally using the card, I've only just
> got mine and haven't even tried it yet. Does the dvb driver actually
> create a v4l interface ( I think it creates a /dev/dvb device but is
> this a standard v4l interface ) ? The docs for the dvb driver are
> v.beta and it's complicated stuff. I belive in the full featured dvb-s
> cards ( with an onboard mpeg decoder ) this is a v4l interface so it
> would work out the box with mythtv once an external channel change
> script is available If the interface can't be connected to directly
> via mythtv using the /dev/dvb interface as a v4l interface, then your
> other option is to use a seperate mpeg card ( for example the
> realmagic hollywood plus ) which with the dvb driver it is possible to
> s! ! end the mpeg output from the dvb-t card into the mpeg card and
> out through the tv out on the mpeg card as decoded video. This output
> could then be rerouted back in through another cheap wintv card, which
> can be used by mythtv. This is a bit of a messy workaround involving
> three cards to do the work of one - I'm not a programmer but there
> should be a way to either decode the mpeg output of the dvb-t card in
> software and create a v4l interface which mythtv can use. I looked
> around at just doing this with pipes - to convert the transport or
> program stream and then pipe it to a virtual v4l interface. I can
> decode the stream to various video formats using pipes but couldn't
> find any answer about how to make a decoded stream available as a
> /dev/video. Anyone got any clues on piping streams direclty to a
> virtual /dev/video ? The problems associated with this approach would
> probably be timing issues due to the high level of processing going
> on. However, it would be interesting to hav e! ! the discussion and
> see what else is thrown up. 
> 
> Best Wishes
> 
> Matt
> 
> Matt Jarvis
> Product Marketing Manager
> Marantz Professional Europe
> Kingsbridge House, Padbury Oaks, 575-583 Bath Road, Longford, Middx,
> UB7 0EH, United Kingdom
> +447796610410 - Mobile
> +441753686080 - UK Office
> +441753686020 - Fax
> matt.jarvis at philips.com
> 
> 
> ______________________________________________________________________
> 
> _______________________________________________
> mythtv-dev mailing list
> mythtv-dev at snowman.net
> http://www.snowman.net/mailman/listinfo/mythtv-dev
-- 
Michael Kedl <kedlm at knology.net>