[mythtv] Commercial Flagging Idea
Michael T. Dean
mtdean at thirdcontact.com
Thu Jul 7 15:24:39 EDT 2005
Mike Benoit wrote:
>On Wed, 2005-07-06 at 09:29 -0400, James Armstrong wrote:
>>>Myth currently supports:
>>> 1) Blank frame
>>> 2) Scene change
>>> 3) Blank frame with scene change
>>> 4) Logo (the little channel identifier logo)
>>> 255) All (combines all the above--basically blank frame with scene
>>>change and logo)
>>Does the current commercial detection (Logo method) detect not only the
>>channel logo, but the TV Rating logo?
>>I have noticed that most of the
>>shows in the US show the TV rating immediately after the commercials
>>when the show resumes playing. It stays on the screen for about 5 to 10
>>seconds then goes away. It won't help with detecting the beginning of
>>the commercial but it would be a great way to know when the commercials end.
Perhaps that's why it's not currently used (not enough benefit to
justify the effort).
>One thing I've started to notice lately is some channels put a random
>delay on when the logo appears after a commercial. (not sure if they
>remove the logo randomly before the commercial starts though)
>This totally throws off the commercial flagger.
>Perhaps a simple:
>Find logo, rewind to nearest blank frame, if less then half the total
>commercial length, seek there instead?
Sounds a bit like the "All" method (not quite the same algorithm, but
well worth giving it a try...).
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