Time displacement effect on linked object

[mttplbkp]

I'm following some of those time displacement typography tutorials.

They work fine with text, but I can't get them to work on a linked object, e.g. a jpeg

Does this only work on type / shape layers?

[Mylenium]

the effect doesn't care, but without any info on what tutorials you are following, screenshots of your timeline and displacment map and all that good stuff nobody can tell you much. Just showing a cropped snippet oif the result is pretty much useless. From what can be discerned in your image there's simply a size mismatch between the source layer and the displacment map, but why and how is impossible to determine without further details.

Mylenium

[mttplbkp]

Thanks, do the attached screengrabs help? I'm trying to test it with a basic scale animation (where it shrinks horizontally)

I've kept the gradient / displacement layer visible so that you can see it properly

[Rick Gerard]

Displacement maps move pixels based on the luminance or brightness of a color. If you look at the Brightness value in the Color Picker or under the cursor in the Info Panel, if you set the display to percent, anything above 50% moves the pixels in one direction. Anything below moves them the other.

[mttplbkp]

Thanks but isn't that different to a Time Displacement?

[Rick Gerard]

Time displacement works the same way:

Check out the sample composition. I've got a 6-second move from left to right, a copy of the move so you can see where the displaced layer would be without displacement, and I'm adjusting the luminance center of a black-to-white linear gradient.

You have to increase time resolution to eliminate the blocks. If you want pixel accuracy the fps must match the movement velocity. If you move 200 pixels in 1 second then the time resolution needs to be 200 fps to keep perfectly displaced pixels. 

Hope this helps.

[mttplbkp]

Thank you! I'm not sure if this explains my original issue though? The problem is that I can get it to work with text boxes + shape objects, but not on linked images etc

[Max34504507s18j]

Hi,

take a look at this YT-tutorial

It shows the Time Displacement effect

https://www.youtube.com/watch?v=ziU3Sj3nEjM

Is it temporal or spatial warping in the video example ?

Or spatio-temporal ?

[Mylenium]

Time displacement remaps the time of e.g. an animated pre-composition pixel by pixel, but otherwise the methodology is pretty much the same. A simple gradient will give what is known as a slitscan effect, i.e. offsetting each row of pixels by the amount of time delay/ a frame. In your case quite likely the problem simply is that you may need to use a more elaborate mask and also pre-compose whatever you are animting there. It's really not quite clear what you are even trying to achieve.

Mylenium