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Combining two video sources to accrue detail

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Does someone have a strategy for or list of softwares to use to accomplish this?

I’ve seen laserdisc rips that mention “This has been captured 5 times, then averaged to reduce dot crawl and noise.”

I’m wondering how to go about this “averaging”, with perhaps more disparate sources. I’ve got an episode of X-Men The Animated Series in PAL and NTSC. After syncing the video to 24fps and matching up the progressive frames, I wonder if some details could be produced, while also reducing MPEG-2 artifacts, combing and coloured noise.

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I use Photoshop, which allow to stretch the videos so they can fit perfectly.

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^…^ said:

Frame by frame? Good luck! 😄

No, I’m not insane 😃 !
You can treat full movie sequences as smart objects in Photoshop.

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Dunno how much it would take to merge two sources (or average/median more) using photoshop, but with avisynth the encode time is pretty fast (from real time with old PC up to 4/5 times with newer ones)

[spoRv] projects: released | in progress | future | homepage: blog.spoRv.com| fan preservation forum: fanres.com|

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Actually, if you don’t overuse filters and effects (such as unsharp, color levels, noise reduction by color layer aso), rendering is pretty fast in Photoshop CC 2017.

Anyway, I’m just saying that I use Photoshop, but I totally agree that AVISynth is a powerful tool!

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Thanks all! hah. if I can replicate the PaNup process with Avisynth (on a VMware install, however) I’d go that route.

Since I’d use the original NTSC audio and re-sync the language tracks from the PAL discs, I suppose it’s a matter of getting the sources synced at 24fps first. What’s the slickest way to get that done? Shot by shot as an image sequence?

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I usually do this:

  • convert PAL 25fps to 23.976fps (or 24fps, in those rare cases), tempo and/or pitch (whichever is needed)
  • synch PAL video to 23.976fps (24fps) source; audio would follow, of course

[spoRv] projects: released | in progress | future | homepage: blog.spoRv.com| fan preservation forum: fanres.com|

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