Commercial marking based entirely on Logo detection

To discuss the tuning of comskip and for posting your ini files
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awmt102
Posts: 3
Joined: Sat Jan 03, 2009 9:56 pm

Commercial marking based entirely on Logo detection

Post by awmt102 »

Hi,

I live in the UK and from various posts (e.g. http://www.mythtv.org/wiki/index.php/Co ... _in_the_UK) and looking at my own recordings I believe that the most reliable method of commercial detection would base it entirely on logo detection as most of the channels over here have a small logo present throughout the 'show' and hardly ever during a 'commercial'.

Therefore I attempted to run comskip with what I thought would use purely the logo detector to locate commercials. The debugger window showed that this would indeed work very well as the black 'logo' bar appears in all the right places and never during a commercial. However the heuristics seemed not to work as the grey 'commercial' bars were not shown.

My question is - how can I force comskip to base its commercial cutting on just the logo detector?

below is my ini file:

Code: Select all

detect_method=10         ;1=black frame, 2=logo, 4=scene change, 8=fuzzy logic, 16=closed captions, 32=aspect ration, 64=silence, 128=cutscenes, 255=all
validate_silence=1         ; Default, set to 0 to force using this clues if selected above.
validate_uniform=1         ; Default, set to 0 to force using this clues (like pure white frames) if blackframe is selected above.
validate_scenechange=1      ; Default, set to 0 to force using this clues if selected above.
verbose=10            ;show a lot of extra info, level 5 is also OK, set to 0 to disable
max_brightness=255               ;frame not black if any pixels checked are greater than this (scale 0 to 255)
test_brightness=40            ;frame not pure black if any pixels checked are greater than this, will check average brightness (scale 0 to 255)
max_avg_brightness=18         ;maximum average brightness for a dim frame to be considered black (scale 0 to 255) 0 m
non_uniformity=0      ; Set to 0 to disable cutpoints based on uniform frames
max_volume=500            ; any frame with sound volume larger than this will not be regarded as black frame
min_silence=20            ; Any deep silence longer than this amount  of frames is a possible cutpoint
ticker_tape=0            ; Amount of pixels from bottom to ignore in all processing
logo_at_bottom=0         ; Set to 1 to search only for logo at the lower half of the video, do not combine with subtitle setting
punish=0               ; Compare to average for sum of 1=brightness, 2=uniform 4=volume, 8=silence, 16=schange, set to 0 to disable
punish_threshold=1.3      ; Multiply when amount is above average * punish_threshold
punish_modifier=2         ; When above average * threshold multiply score by this value
intelligent_brightness=0       ; Set to 1 to use a USA specific algorithm to tune some of the settings, not adviced outside the USA
logo_percentile=0.92         ; if more then this amount of logo is found then logo detection will be disabled
logo_present_modifier=1
logo_threshold=0.75
disable_heuristics=0
punish_no_logo=1        ; Default, set to 0 to avoid show segments without logo to be scored towards commercial I did not know what this meant, but trying it with both 1 and 0 has no effect
aggressive_logo_rejection=0
connect_blocks_with_logo=0      ; set to 1 if you want successive blocks with logo on the transition to be regarded as connected, set to 0 to disable
cut_on_ar_change=0         ; set to 1 if you want to cut also on aspect ratio changes when logo is present, set to 2 to force cuts on aspect ratio changes. set to 0 to disable
delete_show_after_last_commercial=0   ; set to 1 if you want to delete the last block if its a show and after a commercial
delete_show_before_or_after_current=0   ; set to 1 if you want to delete the previous and the next show in the recording, this can lead to the deletion of trailers of next show
delete_block_after_commercial=0   ;set to max size of block in seconds to be discarded, set to 0 to disable
remove_before=0            ; amount of seconds of show to be removed before ALL commercials
remove_after=0            ; amount of seconds of show to be removed after ALL commercials
shrink_logo=0            ; Reduce the duration of the logo with this amount of seconds
after_logo=0      ; set to number of seconds after logo disappears comskip should start to search for silence to insert an additional cutpoint
before_logo=1
padding=0
ms_audio_delay=5
max_repair_size=200         ; Will repair maximum 200 missing MPEG frames in the timeline, set to 0 to disable repairing for players that don't use PTS.
delete_logo_file=0         ; set to 1 if you want comskip to tidy up after finishing
output_framearray=1         ; create a big excel file for detailed analysis, set to 0 to disable
output_videoredo=0
output_womble=0
output_mls=0         ; set to 1 if you want MPeg Video Wizard bookmark file output
output_cuttermaran=0
output_mpeg2schnitt=0
output_mpgtx=0
output_dvrcut=0
output_zoomplayer_chapter=0
output_zoomplayer_cutlist=0
output_edl=0
output_edlx=0
output_vcf=0
output_bsplayer=0
output_btv=0            ; set to 1 if you want Beyond TV chapter cutlist output
output_projectx=0         ; set to 1 if you want ProjectX cutlist output (Xcl)
output_avisynth=0
output_demux=0            ; set to 1 if you want comskip to demux the mpeg file while scanning
output_debugwindow=1
sage_framenumber_bug=0
sage_minute_bug=0
live_tv=0               ; set to 1 if you use parallelprocessing and need the output while recording
live_tv_retries=1         ; change to 16 when using live_tv in BTV
standoff=0               ; change to 8000000 when using live_tv in BTV
cuttermaran_options="cut=\"true\" unattended=\"true\" muxResult=\"false\" snapToCutPoints=\"true\" closeApp=\"true\""
mpeg2schnitt_options="mpeg2schnitt.exe /S /E /R25  /Z %2 %1"
avisynth_options="LoadPlugin(\"MPEG2Dec3.dll\") \nMPEG2Source(\"%s\")\n"
dvrcut_options="dvrcut \"%s.dvr-ms\" \"%s_clean.dvr-ms\" "
windowtitle="Comskip - %s"
awmt102
Posts: 3
Joined: Sat Jan 03, 2009 9:56 pm

Re: Commercial marking based entirely on Logo detection

Post by awmt102 »

I forgot to mention that I have also tried what is stated here:

viewtopic.php?f=2&t=437&p=1928&hilit=logo#p1928

But it still does not show the commercials.
erik
Site Admin
Posts: 3368
Joined: Sun Aug 21, 2005 3:49 pm

Re: Commercial marking based entirely on Logo detection

Post by erik »

Please follow the "how to ask for help" post and I will help you tune
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