[mythtv-users] Recordings start & end 10 seconds too soon, on all channels

[steve]

> On Mar 22, 2016, at 7:59 AM, Michael T. Dean <mtdean at thirdcontact.com> wrote:
> 
> On 03/22/2016 07:34 AM, Tim Draper wrote:
>> 
>> ---- On Tue, 22 Mar 2016 11:25:44 +0000 Michael T. Dean  wrote ----
>>> You can set "Time to record before start of show (secs)" and "Time to
>>> record past end of show (secs)" to some value (generally greater than
>>> the amount of offset you're seeing--like 20s or so), but note that the
>>> over-record is not guaranteed. If you have back-to-back recordings on
>>> the same input, MythTV will switch at the exact scheduled time and you
>>> won't get any over-record (extra time on end of the first show and extra
>>> time at beginning of the second show).
>> i use those settings in mythtv-setup, along with the 'avoid back-to-back recordings on same tuner'. I cant remember where this setting is or it's exact wording but it's close enough;
> 
> Avoid back to back recordings
> Selects the situations where the scheduler will avoid assigning shows to the same card if their end time and start time match. This will be allowed when necessary in order to resolve conflicts.
> 
> under Recording Priorities in frontend settings.
> 
>>  i think in mythtv-setup. Works well and not seen any issues with recordings since i set it up this way.
> 
> That will help to allow more use of the "Time to record before start/past end of show (secs)", but only solves the problem if you generally don't record multiple shows at the same time. Statistically, it can only work if you record fewer shows at a given time than half your inputs.  If you have an HDHR Prime with CableCARD that provides 3 inputs, that means it will only give you the extra time if you record less than 1.5 shows at a given time. So, realistically, that means you can record 2 shows at a time as long as you'll only record a single show after those 2 and then 2 then 1 ...  (So, 2 shows from 8-9 and 1 from 9-10 and 2 from 10-11 or whatever).
> 
> This is not at all how recordings work on my system.  Generally, during prime time, my system is recording 5 shows at any given time and they're followed by 5 more from the start to the end of prime time, which is more than half of my 6 inputs.  (I occasionally have 6 recordings at once, but some days--even in prime time--I might have only a couple.)  This is because I'm using the DVR as a DVR--basically, I record everything I might possibly ever choose to watch, and then delete those things I later decide not to watch (i.e. after they cancel the show and people are saying it's not worth watching or if people say it's not worth watching or if I watch some and decide there's no way it will get good enough to watch it).  This way, though, I always have something already recorded (allowing me to skip commercials and time stretch) and am never forced to sit through watching whatever garbage is currently airing on someone else's schedule (where that schedule includes commercials).
> 
> FWIW, most of the time, the "Time to record before start/past end of show (secs)" turns out to be a placebo that satisfies most users--and really has far less benefit than people believe.  If you can't count on it, it's not much offering much at all, but it's amazing how many people swear by it (without ever looking to see how infrequently it actually benefits them).  The only people for which it generally works are people who have twice as many inputs as they need--and those people would actually be better served by just using the Start Early/End Late settings on the recording rules (because they have plenty of inputs) and could even record more shows without problems. If you do want to over-record by 1 minute at the start and end of each show, you should set Start Early/End Late to 1 in the default Recording Rule Template to make it easier to set up new recording rules.
> 
> Mike
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thanks, i need to digest this more, but it seems you advocate the 2nd choice using Recording Rules.  I also have 6 tuners like you, and at times, also record > 3 shows at once.  So I guess #2 is the way.    Where can I modify the default Recording Rule Template?   I am looking under FE > Manage recording Rules but I don't see any place to change the default template, just the settings for each show one by one