[mythtv-users] Detecting missed channels changes via logos

[Kevin Kuphal]

Brad DerManouelian wrote:
> On Nov 20, 2006, at 8:03 PM, f-myth-users at media.mit.edu wrote:
>
>   
>> Here's a wacky idea, tossed out in case it inspires someone to
>> experiment with it:
>>
>> We keep hearing about occasional missed channel changes.  Sure, it's
>> great if whatever bug causes failures gets stepped on, but sometimes
>> that's never possible, or takes an enormously long time.  And often a
>> missed channel change means that the show is gone for good by the time
>> the failure is detected (after all, the whole point of a PVR is that
>> it records -unattended-; if you have to babysit it so it doesn't miss
>> a broadcast that isn't repeated, it's lost a lot of its utility).
>>
>>     
> <snip>
>
> I like the idea, but instead of logo detection, it should read the  
> metadata that comes down from the stream to make sure you're actually  
> recording the correct show. The metadata won't always match the show  
> title perfectly, so it should be liberal with what it considers to be  
> the "correct" show. Does anyone know off the top of their head if  
> this data comes down for most channels now? Maybe it's just something  
> that comes on channels with closed captioning?
>
>   
You can pass "-v xds" into mythbackend as a command-line option and it 
should print out all the XDS data that it finds.  I believe this was 
included in 0.20

Kevin