commercial detection on RTL HD Germany

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jpk
Posts: 1
Joined: Sun Jan 06, 2019 3:37 pm

commercial detection on RTL HD Germany

Post by jpk »

Hi,

I just started with Comskip. Thanks for your great effort on this!

While playing around with recordings on RTL HD I noticed that the detection is not working as expected. What happens is:

The show runs. When the commercial starts the logo disappears but there seems to be no black frame. After 20-30 seconds there seems to be the first black frame and a block of commercials is detected. So I tried to tweak this with

after_logo=2

in order to force a black frame whenever the logo disappears. I can see

Code: Select all

Start logo cblock 15	frame 28200
 0:21:31 - 33556 frames in 100.66 sec(333.36 fps), 1.00 sec(398.00 fps), 43%
End logo block 15	frame 32475	Length - 0:02:46.00
 0:21:51 - 34065 frames in 101.66 sec(335.09 fps), 1.00 sec(509.00 fps), 43%
				Nonlogo Length - 0:00:22.00
Start logo cblock 16	frame 33025

End logo block 16	frame 33175	Length - 0:00:01.00

Frame  34160 (1366.320s) - Black frame with brightness of 16,uniform of 0 and volume of 3569
Frame  34161 (1366.360s) - Black frame with brightness of 16,uniform of 0 and volume of -1
With 32475 being the frame where the logo disappears at the beginning of the commercial. I cannot see that a black frame is created however.

Code: Select all

Logo start -  27450	end -  27525	length - 0:00:03.00	before:865.3 s	 after:232.1 s
Logo start -  28325	end -  32475	length - 0:02:46.00	before:900.3 s	 after:34.1 s
Logo start -  33150	end -  33175	length - 0:00:01.00	before:1093.3 s	 after:6.1 s
Logo start -  42025	end -  42475	length - 0:00:18.00	before:5.8 s	 after:255.8 s
Logo start -  42775	end -  43150	length - 0:00:15.00	before:35.8 s	 after:228.8 s

Code: Select all


Black Frame List
---------------------------
Black Frame Count = 147
nr 	frame	pts	bright	uniform	volume		cause	dimcount  bright   type
  0	  5817	 232.640	    16	     0	   400	           b 	     0	     0	P
-----------------------------
  1	 33328	1333.080	   107	 29237	    10	       l     	 18346	   178	P
-----------------------------
  2	 34160	1366.360	    16	     0	     2	           b 	     0	     0	I
  3	 34161	1366.400	    16	     0	     2	           b 	     0	     0	B
  4	 34162	1366.440	    16	     0	     2	           b 	     0	     0	B
  5	 34163	1366.480	    16	     0	     2	           b 	     0	     0	P
-----------------------------
  6	 34664	1386.520	    16	     0	     0	           b 	     0	     0	I
I also find

Code: Select all

Frame  33328 (1333.080s) - Cutpoint added 6 seconds after Logo disappears at change percentage of 94

Later:

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Fuzzy scoring of the blocks
---------------------------
Block 0 has logo.
Block 0 score:	Before - 1.00	After - 0.01
Block 0 has twice excess length.
Block 0 score:	Before - 0.01	After - 0.00
and

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----------------------------------------------------
Block list after weighing
----------------------------------------------------
  #     sbf  bs  be     fs     fe        ts        te       len     sc   scr cmb   ar                   cut    bri logo   vol sil   corr stdev   cc
  0:++    0   0   0      1  33327     0.00s  1333.04s  1333.04s   0.00  0.07   0 1.78            EL    l       556- 0.75 1583- 74-  0.000    55
  1:--    3   1   2  33328  34161  1333.08s  1366.40s    33.32s   2.00  0.08   0 1.78             L        b   828- 0.00 1877+ 88+  0.000    82
What can I do to teach Comskip to recognize the logo disappearing in frame 32475? Is there any way to detect these kind of commercials?



Regards,
JP

erik
Site Admin
Posts: 3338
Joined: Sun Aug 21, 2005 3:49 pm

Re: commercial detection on RTL HD Germany

Post by erik »

There should be some options.
Can you follow the "how to ask for help" post and send me the generated zip file?

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