[mythtv-users] Commercial Flagging, what are the best
drig at noses.org
Wed Dec 21 13:10:21 EST 2005
This is a pretty off-the-wall suggestion. Is there anyway to detect
V-Chip signals? I know within the US, all broadcast and cable shows
have a V-Chip signal, but it's turned off during commercials. This
would be a 100% reliable way of detecting commercials, but I have no
clue whether the signal could be picked up by myth.
I would be ironic to have something good come out of V-Chip, eh?
> In my experience, blank frame detection (with strict detection) works
> great most of the time in many US channels (at least the major
> networks). However, outside the US, many channels don't do blank
> frames. On those channels, I use logo detection and that works like a
> charm. Of course, that assumes that the broadcaster turns off the
> logo during commercials (which many of them do). I do have a few
> channels where neither blank frames nor logo off/on is used by the
> network. In those cases, I think I'm out of luck. I tried scene
> change detection and it hasn't worked well, plus it wrongly flags
> scenes changes inside the show or in the midst of comm breaks.
> I wonder if the mythcommflag code catches things like volume levels
> (many of my channels turn noticeably louder during comm breaks).
> May be Chris P can give us some pointers?
> On 12/13/05, *Steve Adeff* <adeffs at gmail.com
> <mailto:adeffs at gmail.com>> wrote:
> On Tuesday 13 December 2005 12:04, Beny Spensieri Jr wrote:
> > >From: Phil Bridges <gravityhammer at gmail.com
> <mailto:gravityhammer at gmail.com>>
> > >On 12/13/05, Beny Spensieri Jr < benyjr at yahoo.ca
> <mailto:benyjr at yahoo.ca>>
> > wrote:
> > >> I have found that the commercial flagging feature
> > of
> > >> Mythtv is not doing a great job of flagging
> > >> commercials. As a result, playback is not skipping
> > >> the commercials as I have indicated.
> > >>
> > >> Any advise on what combination of settings will
> > >> produce the most accurate commercial detection?
> > >>
> > >> Thanks,
> > >>
> > >> Beny
> > >
> > >Just out of curiosity - have you set the frontend to
> > >automatically
> > >skip commercials? Are you using the 'z' key to skip?
> > >
> > >What are your current detection settings?
> > I initially set it to blank frame detection, which
> > didn't work very well. Then I set it to blank frame +
> > scene change, this is also not great.
> > I have now set commercial detection to ALL, but I have
> > yet to record and test anything yet.
> > I have set playback to automatically skip the
> > commercials.
> > Anything else?
> > Thanks,
> > Beny
> I have mine set to ALL currently with manual skipping and find it
> to be quite
> accurate on about 90% of the channels I've recorded with about 75%
> on the last 10%. It seems to sometimes find too many or not enough
> points when it gets it wrong.
> I'm in the U.S.
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