[mythtv-users] Re: Fixing my "no data" problem in EPG

[Michael Carland]

On Jul 23, 2005, at 7:50 PM, chris at cpr.homelinux.net wrote:

>
> The obvious solution is to tell mythfilldatabase to limit itself to 10
> or 11 days of listings so that there is always data available for the
> short-schedule channels on the first attempt.
>
> Other solutions would be to find a way to adjust the threshold
> percentage at which a day's schedule is considered complete, or to find
> a way to make a certain range of future dates mandatory updates (so
> that the percentage of filled time slots is not considered beyond day
> 10, for example, meaning that days 2, 11, 12, 13 and 14 are all
> downloaded every night).  Those probably require hacking the sources.

This is what I have had to recently do. mythfilldatabase was checking 
that there where at least 4 times as many programs starting after 6pm 
for a given source as there are channels. This is in 
programs/mythfilldatabase/filldata.cpp .  After changing the code to 
require only twice as many programs starting after 10pm as there are 
channels, my problem was fixed. (My data was only missing for cable 
channels after 10pm).

If you search for "d 18" in that file, that is the sql line that gets 
the number of programs starting after 6pm (18:00), and about twelve 
lines down is a line that ends in "chancnt * 4", that decides if there 
are enough programs for that source. I ran the query manually against 
filled schedules, and broken schedules, to come up with the timespan 
and multiplier that fixed my issue.

I can't remember if someone already mentioned this, but the reason you 
always have two good days of data is that mythfilldatabase always 
refreshes the data for tomorrow, even if it is full, in case there had 
been scheduling changes.

-Michael