[mythtv] Re: Re: Ticket #255: Improved scheduling of consecutive programs with pre-roll/overrecord

Rudy Zijlstra mythtv at edsons.demon.nl
Fri Sep 30 07:22:34 UTC 2005

Hamish Moffatt wrote:

>On Thu, Sep 29, 2005 at 05:48:37PM -0500, David Engel wrote:
>>I know this is going to piss off some people, but here is what I now
>>intend to do.
>>1. Table any changes which add soft scheduling for the time being.
>>2. Add default start-early and end-late settings for new recording
>>   rules.  Existing rules will have to be edited if wanted.
>>3. Limit the existing pre-roll and post-roll settings to 30 seconds
>>   maximum.
>>4. After 3 or 4 weeks, re-open this discussion.  Hopefully by then,
>>   the big soft scheduling proponents will have real world experience
>>   with the above changes and how much of a problem there still is.
>Is #3 particularly useful/necessary?
>Australian television stations are appalling for running late. One
>station in particular routinely runs 15-20 minutes late due to live
>reality television programs (even though they know this always happen
>and could schedule for it).
>I'm abusing post-roll by setting it to 20 minutes. This works as poor
>man's soft scheduling so far. In my case I could put a hard 20 minutes
>on every program as I have three tuners and would probably never get a
>conflict. Currently my third tuner only does about 1 hour a week.
>However, most Australian users would not (we only have 5 OTA stations 
>so 3 tuners is excessive); hard extra time would cause conflicts, while
>post-roll allows for best effort. Programs are rarely repeated here
>so a conflict is a missed program.
>Of course I'm really arguing for the soft scheduler, which would be
>great for Australians. (I've even glanced at the scheduler code in the 
>past but found it a bit daunting to start working on this though.) 
>However I think your interim solution would actually make things worse.
Australia is not the only country with abominal schedule info. The 
commercial broadcasters in the Netherlands also have a tendency to  give 
schedule info which is close to "we intent this, what we do is something 

I started with abusing the pre-roll / post-roll. Results were most 
certainly not to my liking:
- i never could know when the recording would be recorded
- i had several very surprising results (cut endings, which i consider 
to be worse than lost recording)
In the end i have taken care to have extra tuner capacity, and at the 
moment i consistently add at least 10 min to every recording when 
scheduling this recording.
1 recording schedule at the moment has 1 hour extra time, as the 
behaviour on that Belgium channel is abominal at the moment. And missing 
the end of a thriller like series is really irritating.

Option 2 would ease my life considerably.

Face up to it. Soft scheduling will still result in unexpected 
behaviour. Spend 50bucks to get an  extra tuner and spare yourself the 



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