Deshaking

[Mephesto]

Not the famous Deshaker for Virtualdub, but there was one to fix subtle panning/wobbling caused by an unstable projector, most visible during static cartoon scenes. Which one was it?

[zoobie]

Maybe something here?

[poisondeathray]

depan, depanestimate, stab (function based on depan)

[Mephesto]

Hmm, I've tried stab (the only one that rung a bell) and it failed miserably. I didn't try DePan as I couldn't bear to read thru all the text on the manual.

I tried the VD Deshaker and it has done well on a selected ending credits scene but I can't use it for the whole movie because it will screw up frames on dynamic parts of the movie.

Nonetheless, even the credits scene, although stabilized, still had temporal wobbling.

My goal here is to decimate all duplicate frames. The frame shake confuses the duplicate frame detector.

If deshaking is not a viable option, I'm thinking of resizing the video 2 or 3 times smaller and running the duplicate frame analysis and later use the log for the original bigger video. A temporal filter also helps to reduce the difference between frames.

Any other ideas?

[hydra3333]

rtfm?

[Mephesto]

Which one?

[jagabo]

I tried the VD Deshaker and it has done well on a selected ending credits scene but I can't use it for the whole movie because it will screw up frames on dynamic parts of the movie.

Nonetheless, even the credits scene, although stabilized, still had temporal wobbling.

Projector wobble is usually just a few pixels so you can turn the max correction values way down (so that it doesn't interfere with real motions during the body of the film). Then turn the panning smoothness way up (to less long term motion during the credits). You can usually disable zoom and rotation for projector wobble. You may have to resort to using different settings for different parts of the video.

[Mephesto]

I tried the VD Deshaker and it has done well on a selected ending credits scene but I can't use it for the whole movie because it will screw up frames on dynamic parts of the movie.

Nonetheless, even the credits scene, although stabilized, still had temporal wobbling.

Projector wobble is usually just a few pixels so you can turn the max correction values way down (so that it doesn't interfere with real motions during the body of the film). Then turn the panning smoothness way up (to less long term motion during the credits). You can usually disable zoom and rotation for projector wobble. You may have to resort to using different settings for different parts of the video.

The correction values were cranked all the way down, but even 1% of 1280x720 allows 13 pixels of artifacting which were very much visible at the result on the scenes it negatively affected.

Video had to be manually browsed and about 160 Trims had to be added to avisynth. I would have never taken this approach if I knew I would end up needing to write a Trim for every other scene. But what can I say, the first 10,000 frames required no editing so this felt encouraging.

I swear I came across a more fitting tool/solution before, built specifically to counter projector wobble.

Oh well, thanks for at least the effort into assisting me.

[jagabo]

even 1% of 1280x720 allows 13 pixels of artifacting which were very much visible at the result on the scenes it negatively affected.

Can you provide some samples of the problem?

[Mephesto]

even 1% of 1280x720 allows 13 pixels of artifacting which were very much visible at the result on the scenes it negatively affected.

Can you provide some samples of the problem?

Too late, the rip has already been finalized and I've flushed the partition which the temporary files were on. 75% of the video was not negatively affected by the deshaker so it was all good. The scenes that it screwed the frames up were ones with close-ups of moving objects or scenes without a definitive background to work effective motion vectors. I had to lower the Skip threshold to 1% from the default of 8 because it would frequently skip legitimate frames but obviously this caused other problems. Oh well.