Program to analyze video & discern whether it's telecined?

miamicanes · 22nd September 2007, 04:59

Is there any program that can be used to analyze a captured 29.97fps video for 5-30 minutes and tell you how confident it is that the video it just analyzed might or might not REALLY be telecined 24fps film source?

The reason I'm asking is because I have an old video that I captured a few days ago that I just can't make look right. In fact, I can't even watch it for more than a few minutes without getting a queasy feeling. I suspect it's because the captured video's temporal cadence is all screwed up (it's a vidcap of a second- or third-generation vcr-to-vcr copy made ~10-15 years ago), and visibly lurches when playing. I think there's about a 10% chance it might have originally been from film, in which case I could probably clean it up to 24fps progressive, then re-telecine it at a stable 59.94 fields/second. But it takes so incredibly long to re-encode it (~6fps on my fast PC due to all the avisynth filters I have running on it), I want to at least have a clue whether or not it's likely to succeed before I tie up my computer for another 6-10 hours making yet another try at re-encoding it.

Guest · 22nd September 2007, 05:16

Separate the fields and inspect it by eye, looking for the signature of 3:2 pulldown. That is the only reliable method.

Surf · 25th September 2007, 20:55

Hello in Miami,

This very forum, try a program called AVSP which can give you a preview of your avisynth script.

22nd September 2007, 04:59	#1 \| Link
miamicanes Registered User Join Date: Oct 2002 Location: Miami Posts: 55	Program to analyze video & discern whether it's telecined? Is there any program that can be used to analyze a captured 29.97fps video for 5-30 minutes and tell you how confident it is that the video it just analyzed might or might not REALLY be telecined 24fps film source? The reason I'm asking is because I have an old video that I captured a few days ago that I just can't make look right. In fact, I can't even watch it for more than a few minutes without getting a queasy feeling. I suspect it's because the captured video's temporal cadence is all screwed up (it's a vidcap of a second- or third-generation vcr-to-vcr copy made ~10-15 years ago), and visibly lurches when playing. I think there's about a 10% chance it might have originally been from film, in which case I could probably clean it up to 24fps progressive, then re-telecine it at a stable 59.94 fields/second. But it takes so incredibly long to re-encode it (~6fps on my fast PC due to all the avisynth filters I have running on it), I want to at least have a clue whether or not it's likely to succeed before I tie up my computer for another 6-10 hours making yet another try at re-encoding it.

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22nd September 2007, 05:16	#2 \| Link
Guest Guest Join Date: Jan 2002 Posts: 21,901	Separate the fields and inspect it by eye, looking for the signature of 3:2 pulldown. That is the only reliable method.

25th September 2007, 20:55	#3 \| Link
Surf Senior Kindergarten Join Date: Sep 2004 Location: here & there Posts: 417	Hello in Miami, This very forum, try a program called AVSP which can give you a preview of your avisynth script.