[mythtv-users] commercial skipping recorded shows

[Cedar McKay]

On Thursday, May 8, 2003, at 10:54  PM, Craig Longman wrote:

>
> i'd like some help confirming/refuting one of the problems i'm seeing 
> with mythtv.  when i record a show in the background and watch it 
> later, the commercial skipping works quite nicely and is very fast.  
> however, if i've watched the show 'live' while its being recorded, 
> then the commercial skip sucks, taking 10s of seconds to skip through 
> minutes of video.  at least, i'm getting reasonably confident that 
> watching it live causes the commercial skipping to suck, but i'd like 
> someone else to get similar results before i presume thats the issue.
>

My understanding:
When a show is finished recording (as in your "background" scenario) 
mythtv then processes the file, then marks commercials. So when you hit 
"commercial skip" it already knows where the commercials are and jumps 
right to the correct spot. When you hit "commercial skip" on a file 
that isn't finished recording yet, you force the commercial detection 
code to run "on demand" rather than when the recording is complete. Add 
in the fact that it can only use spare cpu for the process since it 
still has to be recording, and you can imagine it takes a little time. 
Personally I don't use commercial skip with live tv, as I notice it 
induces some stuttering in the in progress recording.


best,
Cedar