Using CopyCat for Roto with @AlfieVaughan

Impatient teacher!!! why show everything at an accelerated pace? Scoundrel

I really don't understand why this isn't keyable - the greenscreen looks absolutely fine, just need to remove markers near the actors and use a degrained plate to stop the buzzing edges.
It honestly blows my mind when compositors don't know the most basic (and advanced) art of keying - NOBODY gets a good key with 1 keying node, it's naive to think you could.
And having worked on many many large productions over the years, we would NEVER roto a shot like this, that's not normal if its on a decent green/bluescreen (such as this), people just need to learn how to key.

Thank you the good explanation.

@AlfieVaughan, Hey, I'm prepping for some post work and want to use a similar approach. In my case it's a rigid bodied object in a roughly similar position in varying lighting conditions. Do you need to do per shot roto + training? Or can I do 2-3 frames on let's say 10 shots and use those as my ground truths and use one inference for 60+ shots for example?

What Ghostbusters project is this? It looks great!

Someone need to fire the VFX supervisors on that set lol...

Roto is another useless job AI will obliterate...easiest thing it can do

This would be like 5 minutes of work with AE roto brush or Davinci Resolve's Magic Mask. This is too much work for automation..

Perfect, quick and precise explanation. Thanx!

Thanks for sharing your knowledge...

Somethings in Nuke are just easy while other simple things are nearly impossible but with Mocha in After Effects this can be done in seconds. Mind boggling.

boring 1 min done in after effects.

Mocha can do that in seconds.

Hello Alfie how do I contact you to ask question on application using copycat for project, best joe

Is that Sylvester McCoy?

Can I use the reference frames from one shot and use copycat with those reference frames in another shot? How would be the process?

Thanks for adding this tutorial, really glad to see an example of the usefulness of this tool. After following the directions I wasn't getting any useful data when my Copycat was done processing. So I went and listened once more and noticed something that you said that you actually didn't do in your script. In the first Remove Node (connected upstream from Copycat 'Input') you say to Keep the RGBA, but in your Node Graph you actually only kept the RGB. I think that's why I wasn't getting any results the first time through.

Can we address the fact that this is a production level with actors, a studio BUT just one artist in post production !?
Can we replace producers with AI already ?

how good does this work on shots that have motion blur? All the examples I have seen of it always has fairly static subjects.

have you tried white balance the footage before keying,might have helped

Wow this is awesome. I had a very complicated project almost 3 years ago that required roto for 2 actors and each of theyr body parts including many objects for 2000+ frames nd a very short deadline. Was a cartoon conversion from real footage to 2D. I had to write a python AI program to run on 3 high end nvidia gpu's of that time and even after letting it run 20+ hours over a weekend on 4k frames it had a lot of trash in it and was never so clean like this, but was usable and better then nothing, was 70% there, so i had to literally paint each frame to get the trash out. Was crazy work and i wish i had this tool. Is incredible how the technology evolves so fast. Resolve 18 just came out and the Ai roto in it is also extremly impressive.

can copy cat node be used for paint-prep shots ?

We are still on the stoneage, speaking as as Vfx artist here

"Unimaginable power, unlimited rice pudding!"

yo. tnx!

Has anyone had issues with it saying "Empty frame range" when trying to restart it? Can't seem to crack it

To me this looks like perfect task for Mocha.

Fantastic explanation, thankyou

Is there a big improvment from copycat in 13.1? I have tried it on a pretty simple shot and it produced totally unusable results.

While the idea of AI assisted roto is impressive, you could have picked a trickier shot for demonstration. The guy nearly moves, mocha would take seconds to track.

It will be great to have the footage to practice copy cat

Where can I find the ColourEdge gizmo? Please, it will come very handy.

If it took 40 min for copycat to produce an alpha for a 66 frame shot, how long did it take for that 2300 frame shot?? I can definitely imagine this being very useful, thanks for the tips!

Is the production video somewhere we can see ? This looks great !

is there any difference if we do key for a single frame and use that to generate matte and do roto for the single frame?
I appreciate if you would have used copycat to generate matte for the Screenleft character as that's the tougher task in the shot

Will it end roto jobs? Plz answer

Brilliant! I'll try this tomorrow on a green screen plate that I've been having issues with and was dreading doing a heap of roto on

whats the seventh doctor doing here?

Does the roto you create for each reference require the same amount of anchor points?