> I have noticed that more and more shows are shown in letterbox (in 4:3 > format) and have black bars on the top and botton during the show but > switch to full 4:3 during commercials. Would it be possible to add > another commercial detection scheme that looks for the letterbox format > with the black bars, and if present goes back to the beginning of the > show and flags commercials when the black bars go away?
Eventually I hope to have most/all detection methods used concurrently to try to get the best detection possible. Something like a bitmask for each frame of video saying which detection methods were relevant for that frame. Sort of like this (if all these methods are coded): 0x0001 = frame is blank 0x0002 = frame is a scene change 0x0004 = logo present on frame 0x0008 = aspect ratio changed at this frame 0x0010 = audio silent 0x0020 = etc. 0x0040 = etc. 0x0080 = etc. So a frame with a mask of 0x15 would indicate a silent black frame with the logo present. Very likely that frame is on a commercial boundary. I've started work on changing the current code to work towards something like this but haven't had much time so it's nowhere near there yet. -- Chris
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