Overlaying an image exactly on top of identical image

[Guy Manzur]

I need the oposite – I want to place an animated object on top of a static object that appears in a video.
Anyway, I don’t think it really really matters why it’s needed.

As you can see above, I just replied with a link to a video of the solution, which I figured out myself, using the motion track.
https://www.youtube.com/watch?v=ScmnlzKCtGc

[Guy Manzur]

I wonder if you saw the youtube link I just uploaded minutes ago, proving my theory was correct 🙂

[Daniel Waldron]

I see. Very interesting. Glad it worked for you!

[Roei Tzoref]

[Guy Manzur] “As you can see above, I just replied with a link to a video of the solution, which I figured out myself, using the motion track.”

thanks for hanging in there and now I see what you mean: by placing the two identical images side by side in a precomp and tracking it, you fool the tracker to think it has shifted and it moves the attach point to the new place. then you can use this information to a null

it looks you can spend about 2 minutes in this method of placing one image over the other including all the setup required. … how long would it take you to do this manually? taking the image you want to place, setting it’s anchor point to on of the eyes, placing it on top of the other one and scaling it back using opacity or difference mode – a close competition I Imagine.

Roei Tzoref
After Effects Artist & Instructor
♫ Ae Blues Tutorials

[Guy Manzur]

It would’ve take about the same time to achieve 95% match, not 100% like in this method 🙂

[Roei Tzoref]

o.k since you are the one doing this all the time, you know best what works for your needs. glad it worked out, and guess we all learned something. I would also update the Adobe forums thread and post the YouTube link in a response and mark it as a correct answer, maybe this could be useful for other users too.

Roei Tzoref
After Effects Artist & Instructor
♫ Ae Blues Tutorials

[Darby Edelen]

Have you checked it using the difference blend mode? I doubt it’s 100%. Maybe better than 95% but given the nature of sub-pixel interpolation I dare say it’s nearly impossible to have a 100% match using a corner pin.

Darby Edelen

[Roei Tzoref]

Op argues that through his creative method he can get 100% accuracy and faster than manually placing it through the use of difference. He uses regular transform tracking to fool Ae that the image as shifted in order to apply the data to a null and attach the new image so it will be placed exactly over the original. This is demonstrated in the video. Pretty cool but I think the difference method is faster for me. Maybe a competition is in order 🙂

Roei Tzoref
After Effects Artist & Instructor
♫ Ae Blues Tutorials