[mythtv-users] Supporting schedulesdirect.org

Michael T. Dean mtdean at thirdcontact.com
Wed Aug 8 18:39:50 UTC 2007

On 08/08/2007 02:13 PM, Brad DerManouelian wrote:
> On Aug 8, 2007, at 11:02 AM, Don Smith wrote:
>> Why has nobody looked at getting the data out of the vbi? Also why
>> doesn't mythtv set system time with the rds data?
> As far as I know, vbi data is only available as you're recording. So  
> unless you want to record every show you can possibly get and rely on  
> that information not changing for the next time the program is on, I  
> don't think it's going to be useful.

Also, I'm pretty sure that VBI only carries now/next (what's on now and
what's next), which makes scheduling a real challenge.  Really, you'd
need at least a day of data to be kind-of useful and a week to be pretty

EIT can go farther, and Myth has support for it.  (Although, it's not
very useful in the US because of lack of support from broadcasters.)

>  You can feel free to set your  
> system clock to sync with rds data. I have a script that will do it  
> based on data from my DirecTV receivers, but I find NTP is more  
> accurate. Since I record OTA and DirecTV, I prefer my system clock to  
> keep real time, not DirecTV time. I do set my recordings to default  
> to 30 seconds before and 30 seconds after a recording since DirecTV  
> is out of sync a little and I often miss the beginning few seconds of  
> a show otherwise.

My local stations (OTA broadcast) transmit times that differ per-channel
(one 5 minutes early and one 10 minutes late and the others between). 
Regardless, their broadcasts start on time (so, they may be 5 minutes
into showing "Family Guy" and the "now" still says  "American Dad"). 
So, setting time to the "broadcast" time would actually cause problems
for me and using NTP solves those problems.  Just because the stations
are clueless about timekeeping in the computer age doesn't mean I want
my box to be.


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