[linux-dvb] Re: Autogenerating marks.vdr

[Guido Fiala <gfiala@s.netic.de>]

> You could modify the cRecordControl class so that it remembers the
> Recording.FileName() and the channel number (or name). Then in
> cRecordControl::Stop() you could use that information to call your
> program after stopping the recording (see menu.c/.h).
>
> I assume that your program will run for a while, so I suggest you
> make it so that it forks a new process and returns immediately.
> Otherwise VDR's watchdog timer might go off, if VDR was started with
> the '-w' option.

It would even be possible to do that within vdr during recording (in a 
separate thread?).
I wonder if the broadcasters will then remove the icons, or make them 
changing all the time or display them during the commercials as well ;-)

Anyway, there are still those broadcaster-commercials where the logo is still 
shown...

Would be great to have a (binary, non image based) "characterisation 
function" (that is the oposite of a hashing function) for that job.
One could use one value (e.g. 64..256bit) for every frame stored in a file, 
and then simply remove _all_ frames that are displayed more than once (that 
would automatically remove overlapping movie segments after com's.) or coming 
out of a database of such numbers.

One possibility for such a function would be a very high compression DCT, 
maybe some coefficients of the original mpeg-dct-data can be used...

Ideas? Comments?


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