[mythtvnz] VLC, DVB and Freebox

[Sam Hadley-Jones]

> Date: Sat, 3 Nov 2007 17:50:29 +1300 (NZDT)
> From: "Steven Ellis" <steven at openmedia.co.nz>
> Subject: [mythtvnz] VLC, DVB and Freebox
> To: mythtvnz at lists.linuxnut.co.nz
> Message-ID:
> 	<32954.192.168.0.254.1194065429.squirrel at webmail.stevencherie.homelinux.net>
> 	
> Content-Type: text/plain;charset=iso-8859-1
> 
> Ok the aim is to be able to record from all of the freeview channels at
> the same time via the mythtv freebox plugin. This is an interim solution
> until we get working multirec support in the stable tree.
> 
> I'm working off 0.20.1 + fixes so the freebox support only allows for rtsp
> streams hence the slightly more complicated solution. Hopefully someone on
> list can work out a way to do this a bit better.
> 
> Part 1 - Extract DVB streams using VLC and pass as UDP Unicast streams to
> localhost.
> 
> Tried multicast here but it hosed my wireless connection big time. The
> following provided me with three UDP streams over UDP.
> 
> vlc -v --color --ttl 12  --ts-es-id-pid --programs=1025,1035,1036,1904 dvb: \
> --dvb-frequency=12483000 --dvb-srate=22500000 --dvb-voltage=18  \
> --sout-standard-access=udp --sout-standard-mux=ts --sout \
> '#duplicate{dst=std{access=udp,dst=127.0.0.1:5556,sap,name="MaoriTV"},select="program=1025",dst=std{access=udp,dst=127.0.0.1:5557,sap,name="TVNZ6"},select="program=1904",dst=std{access=udp,dst=127.0.0.1:5558,sap,name="TVONE"},select="program=1035"}'
> 
> These can be tested with VLC by typing
> 
> vlc udp://@:5556
> 
> Part 2 - Provide the UDP streams as rtsp streams via a second instance of VLC
> 
> This is the annoying bit. Can't work out how to get a single VLC instance
> to control both sets of streams. First I create a file called vlm.udp.conf
> containing
> 
> new maori vod enabled
> setup maori mux mp2t
> setup maori input udp://@:5556
> 
> new tvnz6 vod enabled
> setup tvnz6 mux mp2t
> setup tvnz6 input udp://@:5557
> 
> new tvone vod enabled
> setup tvone mux mp2t
> setup tvone input udp://@:5558
> 
> And then start vlc as follows
> 
> vlc --ttl 12 -v --vlm-conf vlm.udp.conf --rtsp-host 0.0.0.0:5555
> 
> Now I can connect to this host from anywhere on the network using VLC to
> grap an RTSP stream
> 
> vlc rtsp://mythtest:5555/maori
> vlc rtsp://mythtest:5555/tvone
> 
> >From this I can now setup a freebox channel list.
> 
> So first up - has anyone else tried this, and how well does it work for you?
> 
> Secondly anyone played with VLC enought to find a way to just use a single
> instance.
> 
> Thirdly - An ideal VLC solution would be to use the duplicate stream
> features within a VLM config, but that doesn't appear to be possible.
> 
> Steve
> 
> --------------------------------------------
> Steven Ellis - Technical Director
> OpenMedia Limited - The Home of myPVR
> email   - steven at openmedia.co.nz
> sales   - sales at openmedia.co.nz
> support - support at openmedia.co.nz
> website - http://www.openmedia.co.nz

Steve,

I had this working a few weeks ago. VLC worked well in one instance with
both transports but I didn't go as far as setting up mythtv with the m3u
playlist. The reason I didn't pursue it was that, with VLC running and
no one connected, the CPU usage was at 15% each on a AMD64 Dual Core
4000+. However, usage didn't increase no matter how many clients I had
connected. Here's my config file (note that the LNB voltage is wrong -
still haven't bothered getting up on the roof and changing the LNB
polarity!):

new TVNZ broadcast enabled

setup TVNZ input "dvb://"
setup TVNZ option dvb-adapter=0
setup TVNZ option dvb-frequency=1183000
setup TVNZ option dvb-voltage=13
setup TVNZ option dvb-srate=22500000
setup TVNZ option programs=1035,1036,1025,1903,1904
setup TVNZ option ts-es-id-pid
setup TVNZ mux mp2t

setup TVNZ output
#duplicate{dst=standard{access=udp,mux=ts,url=localhost:1231,sap,group="Freeview",name="TVONE"},select="program=1035",dst=standard{access=udp,mux=ts,url=localhost:1232,sap,group="Freeview",name="TVTWO"},select="program=1036",dst=standard{access=udp,mux=ts,url=localhost:1233,sap,group="Freeview",name="MAORI"},select="program=1025",dst=standard{access=udp,mux=ts,url=localhost:1234,sap,group="Freeview",name="TVNZSE"},select="program=1903",dst=standard{access=udp,mux=ts,url=localhost:1235,sap,group="Freeview",name="TVNZ6"},select="program=1904"}

new Canwest broadcast enabled

setup Canwest input "dvb://"
setup Canwest option dvb-adapter=1
setup Canwest option dvb-frequency=1156000
setup Canwest option dvb-voltage=13
setup Canwest option dvb-srate=22500000
setup Canwest option programs=1920,1921,1929,1930
setup Canwest option ts-es-id-pid
setup Canwest mux mp2t

setup Canwest output
#duplicate{dst=standard{access=udp,mux=ts,url=localhost:1236,sap,group="Freeview",name="TV3"},select="program=1920",dst=standard{access=udp,mux=ts,url=localhost:1237,sap,group="Freeview",name="C4"},select="program=1921",dst=standard{access=udp,mux=ts,url=localhost:1238,sap,group="Freeview",name="RNZN"},select="program=1929",dst=standard{access=udp,mux=ts,url=localhost:1239,sap,group="Freeview",name="RNZC"},select="program=1930"}

control Canwest play
control TVNZ play