[mythtv-users] commercial flagging idea - commercial"fingerprinting"

dean collins dean at collins.net.pr
Tue Apr 12 16:56:27 UTC 2005



> -----Original Message-----
> From: mythtv-users-bounces at mythtv.org [mailto:mythtv-users-
> bounces at mythtv.org] On Behalf Of Matt
> Sent: Tuesday, April 12, 2005 12:48 PM
> To: Discussion about mythtv
> Subject: Re: [mythtv-users] commercial flagging idea -
> commercial"fingerprinting"
> 
> On Apr 11, 2005 7:36 PM, Brad Templeton <brad+myth at templetons.com>
wrote:
> >
> > Yup, you'll find threads (often including me) about man of these
sorts
> > of features.   The long term version -- aggregating which parts of
> programs
> > people watch at normal speed and which they don't -- provides the
only
> > undefeatable commercial detection algorithm, unless you are among
the
> first
> > to watch a show, but it's a long way off.   Fingerprints based on
> various
> > video and audio fingerprinting -- or even easier, on closed caption
text
> when
> > present -- is a lot easier.    Some of these can actually be applied
> without
> > collaboration, in that once you have identified a budweiser
commercial
> by its
> > closed caption text you can spot it again everywhere.  (Of course
not
> all
> > commercials have captions.)
> >
> > A _really_ fancy fingerprinting system could actually fingerprint
shows
> and
> > notice when the same snippet of video appears in two different shows
--
> almost
> > always a commercial, but not always always -- and then cleverly
delete
> the
> > redundant fragment and point to it. (Something myth can't yet do of
> course but
> > may be planned for the future.)  One reason that's interesting is
that
> aside
> > from spotting repeated commercials and repeated shows, it can also
let
> you
> > browse the commercials and start learning what they are.  Ie. some
> people like
> > to capture the movie trailers.  Though web download is often a
better
> idea there.
> >
> 
> Hi Brad!
> 
> How about this:  Instead of fingerprinting the commercials,
> fingerprint the show 30 seconds before and after commercials.
> 
> For example.  Users manually verify (and fix) detected commercial.
> Those users that do that, then automatically run a fingerprint before
> the start of the commercial cut and after the end of the commercial
> cut (when the show is back from break).  This fingerprint could then
> identify the breaks in the show, not the commercials themselves.
> 
> Also, the fingerprint alogrithm could include time information.
> Obviously, shows (in America at least), have a set length between
> commercial breaks.  Each episode might be different, but this is not
> determined by the individual broadcast stations, so someone watching
> an episode of "Friends" in Texas will have the same ammount of time
> between commercials as the person watching in New York.
> 
> One show  constantly see issues on is "Law & Order" where it comes
> back from commercial, and will show a the black screen with the text
> giving the location/date/time of where the scene is taking place... it
> almost always gets cut off.  Just another example :)
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[DC] 
I thought you were just working out the timing of the adds themselves (I
assume all tv channels break at the same spot in a show)

Not actually trying to identify the show themselves.


Cheers,
Dean 




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