[mythtv-users] dvb-t2

[phipps-hutton at sky.com]

Quoting John Pilkington <J.Pilk at tesco.net>:

> On 30/11/11 11:03, Dave Brown wrote:
>> Hello list
>>
>> In 2012 they will be switching off the analogue signal and introducing
>> HD over dvb-t2 in our area.
>>
>> I understand dvb-t2 is fairly new but are there any recommendations for
>> a dvb-t2 card or usb device.  Preferably a dual tuner.
>>
>> Thanks
>
> I have no experience of this, but I think this link tells you the state
> of the art for one device.  Don't try (some parts of this) at home!
>
>> http://stevekerrison.com/290e/
>
Seconded.
I have one of these and it works fine with linux version 3.0. I have  
had it recording four programmes at once using multirec. Skipping in  
DVB-T2 streams is not perfect and only fixable by the broadcaster but  
the scrambled macroblocks disappear very quickly. If you need help  
building 3.0 on Debian stable let me know. If you have more than one  
DVB tuner you will have to fix the device names so that MythTV will  
get the right ones. I have hacked /etc/default/mythtv-backend to make  
nicely named symlinks just before the backend is started. You can type  
the nice names into mythtv-setup when channel scanning or edit the  
database afterwards.

case "$1" in
   start|restart)
   # Make symlinks from sensible names to the DVB tuners. There are  
two types and
   # the devices are created in any order so keep separate counts.
   T=1
   T2=1

   # This is run each time MythTV is restarted so first clear out old ones.
   rm -f /dev/dvb/DVB-*

   # Scan the devices present.
   for frontend in /dev/dvb/adapter*/frontend0
   do
     adapter=${frontend%/frontend0}
     adapter=${adapter##*/}
     sys=$(udevadm info --query=path --name="$frontend")
     product=$(udevadm info --attribute-walk --path=$sys \
               | grep --invert-match 'EHCI Host Controller' \
               | grep 'ATTRS{product}==')
     case $product in
       # DVB-T tuners.
       *'ATTRS{product}=="Digital TV Receiver"')
         ln -s $adapter /dev/dvb/DVB-T_$T
         T=$((T + 1))
       ;;
       # DVB-T2 tuners.
       *'ATTRS{product}=="PCTV 290e"')
         ln -s $adapter /dev/dvb/DVB-T2_$T2
         T2=$((T2 + 1))
     esac
   done
esac

--
Cheers,
Tim.