[Mehdi Rafeie]

Thanks a lot for your reply, Walter. That is indeed what I am looking after. However, I could not achieve the same result. Could you please elaborate further on your solution?

To do the Difference before the Time Blend, I first imported my new video file as well as a frame representing the clean look of the microchannel into a comp. I then set the blend mode of the video layer to Difference and converted these two layers into a pre-comp. Next, I applied the Time Blend effect on the pre-comp by setting the Transfer parameter to Lighten and Accumulation to 100%. Finally, as you instructed, I applied Echo and tried to play around with its variables with no success.

Your help is highly appreciated

[Mehdi Rafeie]

Thank you very much Kalle, your nice idea solved my problem. I uploaded the result here.

[Mehdi Rafeie]

Thanks for your attention.

I checked it out but I’ve not chosen the From Current Time option. When I open a comp, regardless of the work area location and duration, the AE gets started to cache all of the comp frames initially. I really need to stop it. I even tried to get a RAM Preview of the work area to disturb it but after the AE finishes the rendering task, it keeps going to cache rest of comp frames automatically! Any other idea?

Thanks again

[Mehdi Rafeie]

Thanks Johnny

As you said, I disabled disk cache but the green bar still works as usual. Do I misunderstand you?

[Mehdi Rafeie]

Thanks a lot Dan!

Q: Is your composition long?
A: In some cases, yes.

Q: Do you have any expressions that go through entire comp frame-by-frame?
A: Yeah, but I temporarily forced my comps to have a length of 1 frame only.

Q: Do you have a bunch of cascading expressions?
A: Yes, although the expressions are time-independent but they are depend on each other.

Regarding the tips you mentioned, I removed all unnecessary dependencies and fortunately solved the timeout error. Nonetheless, as the project is too huge and it’s possible to hook me again, is there any way to increase the allowable expressions run-time to escape the timeout trap?

Thank you very much again!

[Mehdi Rafeie]

Thanks a lot Dan!

In my case, I used an expression effect of type ‘Point’ to hold ‘table cell index’ value in my project and the workaround I used is as follows. Anyway, thanks for your attention.

var cellIndex = thisLayer.effect("P")("Point");

var i = parseInt(cellIndex[0]);
var j = parseInt(cellIndex[1]);