[mythtv-users] Timeshifted channels

Andre mythtv-list at dinkum.org.uk
Fri Jun 11 09:57:05 UTC 2010

On 8 Jun 2010, at 10:14, Nick Morrott wrote:

> On 8 June 2010 08:57, Jay <alchamist at googlemail.com> wrote:
>> Hi all,
>> I apologise if this has been asked already, but I haven't yet found an
>> answer.
>> Whenever I set a recording schedule to "Record at any time on any channel",
>> even if I have the duplicate detection on, I often end up with the same
>> program recorded twice when it is shown on a channel with a timeshifted
>> version as well.
>> e.g. A program that records on "More 4", will also record an hour later on
>> "More 4 +1"
>> The program data is set to only come from xmltv/tv_grab_uk_rt
>> Is there any way to improve the duplicate detection or prevent this from
>> happening? I don't want to set it to record on only one channel, as quite
>> often programs are split across any of a broadcasters channels - e.g. C4,
>> More4, E4 etc - and obviously the timeshifted channel is sometimes handy to
>> avoid recording conflicts.
> Please check the XMLTV ID for more4 +1 you are using. To use the
> regular more4 data but with programme timings shifted forwards an
> hour, you should be using an ID of 'tsod.plus-1.more4.channel4.com' in
> the MythTV database and in your XMLTV config file for your video
> source.

Sorry to jump in here but I see the same problem at times, I've just put up with it so far.

I'm a little concerned about using a programatically shifted version of the original channel, there are often instances where the broadcaster does not have the rights to make an extra broadcast so the +1 contains only an apology graphic, I'd rather MythTV didn't decide to schedule one of those for recording! I believe this is why there are often "official" IDs for +1 channels as they can be different.


> I added full support to tv_grab_uk_rt (based on an inital patch from
> David Greaves) in January 2008 for the exact reasons you describe -
> small differences in the listings provided by the Radio Times for
> regular/timeshifted channels would break duplicate detection across
> these 'similar' channels. With more and more timeshifted channels
> becoming available on Sky Digital and Virgin Media, it was getting to
> be a real problem. Configuration of the grabber hides the Radio Times
> timeshifted channels and prefers the channels having timeshifted data
> created in the grabber. There are currently 52 timeshifted channels
> having their listings created in this way - and the Radio Times does
> not supply +1/+2 data for all of them.
> Cheers,
> Nick
> -- 
> Nick Morrott
> MythTV Official wiki: http://mythtv.org/wiki/
> MythTV users list archive: http://www.gossamer-threads.com/lists/mythtv/users
> "An investment in knowledge always pays the best interest." - Benjamin Franklin
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