AVISynth / sRestore not removing duplicate frames

[bvdd]

Hi all,

I've already processed this clip in VDub with the following AVISynth script:

Import("C:\Program Files\Avisynth\plugins\sRestore.avs")
AVISource("TEST.avi")
ConvertToYV12(interlaced=true)
QTGMC(Preset="faster")
Srestore(Frate=19.98)
AssumeFPS(12)
Crop(8,0,-8,0)
LanczosResize(640,480)

Then I thought there were still some duplicate frames so I ran this script:

Import("C:\Program Files\Avisynth\plugins\sRestore.avs")
AVISource("TEST 2.avi")
ConvertToYV12(interlaced=true)
Srestore(Frate=19.98)
AssumeFPS(12)

But the result still seems to have the same duplicate frames - frames 16-17 for example.

Can anyone verify there are duped frames in this clip, and if so, what should I try next?

Thanks,
Bill

[manono]

Yes, frame 18 is a dupe of frame 17. It wasn't seen as such because the two frames don't have the same 'brightness'. There also seems to be a missing frame between 21-22. You have a crappy source and expect perfection? You might try some deflicker filter to try and even up the brightness before then removing the dupes. Or maybe DeDup or MultiDecimate will do a better job of dupe removal, but you should make it progressive (and maybe progressive 29.97fps) first.

I don't know what that second script was all about. You used it on the results of encoding with the first script? A waste of time since it was already 19.98fps.

[bvdd]

You have a crappy source and expect perfection?

Show me where I said I expect perfection.

As I've said several times, I'm brand new to this stuff and I appreciate all the help and patience I've received here.

But if you don't want to help me anymore, then don't. There's no need to snap at me.

[jagabo]

Can anyone verify there are duped frames in this clip, and if so, what should I try next?

Yes. And the missing frame manono noted.

You might try using SRestore with a higher frame rate to remove blended frames, then following up with TDecimate() to remove the duplicate frames. But use an edge map (this eliminates overall brightness from the image) as a test clip for TDecimate():

Import("C:\Program Files\Avisynth\plugins\sRestore.avs")
AVISource("TEST.avi")
ConvertToYV12(interlaced=true)
QTGMC(Preset="faster")
Srestore(Frate=29.97) # this should remove the blended frames but leaves duplicates
edges = mt_edge().GreyScale() # build a map of edges for duplicate frame detection
TDecimate(edges, clip2=last, Cycle=6, CycleR=2) # decimate to 19.98 fps
AssumeFPS(12)
Crop(8,0,-8,0)
LanczosResize(640,480)

If that leaves too many blended frames try:

Import("C:\Program Files\Avisynth\plugins\sRestore.avs")
AVISource("TEST.avi")
ConvertToYV12(interlaced=true)
QTGMC(Preset="faster")
Srestore(Frate=24.975) # this should remove the blended frames but leaves duplicates
edges = mt_edge().GreyScale() # build a map of edges for duplicate frame detection
TDecimate(edges, clip2=last, Cycle=5, CycleR=1) # decimate to 19.98 fps
AssumeFPS(12)
Crop(8,0,-8,0)
LanczosResize(640,480)

[bvdd]

Thanks, I will try those suggestions.