[mythtvnz] DVB multicasting

[Nick Rout]

On Tue, Oct 27, 2009 at 10:46 AM, Ross and Jemima Knudsen
<ross.jemima at gmail.com> wrote:
> Hi all,
>
> I've been working on multicasting my FreeviewHD content on my LAN.  I've
> been using mumudvb which I've got up and running (last night).  It can
> multicast an entire transponder on the network for each card you have.
> I have two tuners so I managed to multicast the TVNZ and Canwest
> transponders together.  I was able to view all these channels using VLC
> on an Ubuntu and Windows 7 box over ethernet.  The wireless wasn't able
> to handle it (not sure why maybe the WPA overhead is too much).  Problem
> is now I want to get my mythbackend to 'tune' these channels.  I
> semi-followed JYAs howto here:
>
> http://avenard.com/iptv/Setup.html
>
> Using network recorder as the tuner card and using a m3u playlist to
> load the channels.  The whole backend setup seems to work without a
> hitch but when you try to watch live TV on the frontend it times out
> saying that I should have received a lock by now.  I'm not sure whether
> the problem is a OS configuration problem, a Myth problem or some other
> problem as the same m3u playlist file works with VLC on the same
> machine.  I wonder if it has something to do with subscribing to the
> multicast group.  This is my m3u file (the IP addresses are the default
> ones used by mumudvb):
>
> #EXTM3U
> #EXTINF:-1,TV ONE
> udp://@239.100.0.0:1234
> #EXTINF:-1,TV2
> udp://@239.100.0.1:1234
> #EXTINF:-1,TVNZ 6
> udp://@239.100.0.2:1234
> #EXTINF:-1,TVNZ 7
> udp://@239.100.0.3:1234
> #EXTINF:-1,TV3 PLUS 1
> udp://@239.100.1.0:1234
> #EXTINF:-1,TV3
> udp://@239.100.1.1:1234
> #EXTINF:-1,C4
> udp://@239.100.1.2:1234
>
> If I can get this to work then it means I can share my tuner hardware
> with the entire network.  It also means you could (if you wanted to) run
> mythbackend in a VM which would enable you to play around with various
> configurations...

I don't have the answer to your question, but I can say that dvbstream
can also multicast a whole transponder (or less if you don't want all
of it).

I have also seen a setup where vlc was used to stream the transponder
and then used mythtv network recorder. This was before multirec came
available in mythtv, so was a way around the lack of multirec.

So I don't have a solution for your problem, just suggestions for
different ways to kill the cat :)

BTW I would think you'd be lucky to stream even one channel of DVB-T
HD over wireless g, let alone a whole transponder!