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Added/dropped frames while inverse telecining on both Streamclip and Handbrake...advice?

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Sorry, I’ve decided to can this entire thing. Thanks to everyone who offered information!

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I'm sure others will chime in but it seems to me that the best way to do this would be to download DGindex and Avisynth. Run the vob files through dgindex with force film checked and let it create a d2v file.  Open the d2v file with avisynth using mpeg2source("myfile.d2v") and then save the file as a raw avi which can be imported into final cut if I understand correctly. You'll have to do some more reading before you can figure it all out but that's probably the best way and it's free. It is a windows only solution though.

If dgindex indexes the film with force film checked and you still have problems you'll probably have to manually ivtc but that's a whole other ball of wax.

Luke threw twice…maybe.

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Why not just do your edit in 29.97 interlaced? If this is really a preservation, you should preserve the original format of the episode complete with original credits IMO.

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[wherein I brush off a good idea because of preconceived notions]

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Shows like this, like ST:TNG, were edited on tape using the interlaced frame rate. So it's not just that it was telecined for airing; the complete episode never existed in 23.976 fps form.

I'm not sure if I understand what you mean about fades, but dissolves between two shots are one of the problems with this type of content. Because they took footage that was already telecined and edited it together, you end up with dissolves between shots with two different pulldown cadences. The result is that no combination of fields lines up to produce a full frame, requiring actual deinterlacing for those frames.

You can force the square peg into the round hole, but not perfectly, and not even well using the solutions available on Mac. Avisynth is needed for such wizardry.

Modern graphics cards recognize and reverse pulldown during playback as part of their deinterlacing engine, the same way TVs do.

You can't change a variable frame rate video to constant frame rate just by telling it to play at a certain speed, because then the frames that are supposed to be shown for a short period of time are onscreen longer: you lose audio sync.

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jephyork said:


So I guess at this point my question boils down to: how do I inverse-telecine a video with broken cadences?

Sorry for the delayed response.

Easy on PC if there are only a few breaks as you say, but I have no idea for Mac.

Now, I'm pretty sure that the only "variable rate" in this clip is the end credits, which are natively at 29.97, and wouldn't have IVTC'ed the same way as the episode itself.  And I'm going to ditch the credits anyway [...]

Can't you tell Handbrake to only process the main portion of the video, chopping off the credits as preprocessing?