Stabilize clip1 using clip2 as reference

[spoRv]

Usual potentially good idea, without technical knowledge to put it in practice...

Let's say that you have two versions of the same movie;

first, let's call it clip1, has better image but "wobbles" on almost every frame by few pixels - up, down, left, right, without a precise pattern

second, let's call it clip2, has worst image (definition, colors, frame size etc.) but rock solid stable image.

Now, is it possible to stabilize clip1, using clip2 as reference?

At least for steady shots - where no panning, zooming etc. occours; I thought, maybe a script that will "explore" all the borders for few pixels, and if nothing change (or change very slightly) at least in one border, it could be considered a steady shot.

Perfect solution: to get the biggest frame size using several frames of the wobbling shot, instead of cropping them all.

Thanks!

[scharfis_brain]

I would simply throw deshaker over it by using extremly tight constraints in terms of stabilization settings.

Matching both sources sounds like a huge PITA.

Just post a sample clip...

[spoRv]

Not matching, the reference clip should be used only to know if a certain shot is steady - hence stabilization filter would be used or not; which is the best filter frankly I don't know...

Or, alternatively, a stabilization filter that have a threshold setting where it works below a certain pixel shift (steady shot) while not over it (panning, zooming etc.)

[wonkey_monkey]

Is this a job for http://avisynth.nl/index.php/AutoOverlay ?

[scharfis_brain]

Whoa! I wasn't aware of this Filter!

In the past I constantly broke my mind how to combine the IRE-DVD (4x3 Openmatte) and the Bluray (cropped 16x9) of Koyaanisqatsi.
It seems AutoOverlay perfectly fits the bill...

[spoRv]

Originally Posted by wonkey_monkey

Is this a job for http://avisynth.nl/index.php/AutoOverlay ?

Sadly the wobble is still there even using it...

[scharfis_brain]

I suspect there might be warping of the film-material within the frames.
So let's have a look.

Please post two non-recompressed sample clips.

[spoRv]

Stab does the job quite well, with no need of reference clip: http://avisynth.nl/index.php/Stab

Now, if only black borders could be filled with previous and/or next frame (when they are from a steady shot) this would be perfect!

[johnmeyer]

If you need really good stabilization, Mercalli is one of the best on the market. It is not free, but if you really need the best result, it is the tool to use.

[StainlessS]

Couple of Mercalli alternatives here:- https://alternativeto.net/software/mercalli-prodad/

vReveal(Freemium) and Dynapel SteadyHand(commercial), both now discontinued (no updates).

vReveal on Major Geeks:- https://www.majorgeeks.com/files/details/vreveal.html

No idea if any good.

[wonkey_monkey]

No stabiliser's ever going to get it exactly right, though. spoRv having a stable source means a more accurate result can be achieved. If the sources are similar enough, maybe even interleaving them and throwing mcompensate at it might do some good, although it probably needs something more bespoke.

[spoRv]

I think a conditional filter in avisynth would do.

Let's say that image "wobbles" by few pixels up and/or down; the "right" size should be 1920x800, but sometimes the frame is smaller and top and/or bottom there is a border up to Y pixel...

So, there must be a filter that says something like:
if horizontal line 1 is black but line 800 is not, then crop(0,1,0,0).whateverresize(1920,800)
if horizontal line 1 is black and line 800 is too, then crop(0,1,0,-1).whateverresize(1920,800)
if horizontal lines 1&2 are black but line 800 is not, then crop(0,2,0,0).whateverresize(1920,800)
etc. up to lines 1&2&3... up to Y

Anyone would dare to try?