live drawing with reverse function —> fading line

[henrikek22183186]

dear community!

I’m on the lookout for a drawing tool for a live performance. I’d love to be able to draw a simple sketch with my graphics tablet, reacting to a live performance. But what I really want is for the drawn line to fade! I’d like to be able to regulate after which time my drawn line starts to disappear, already after 1 second or only after 10 minutes… 🙂 So I guess, what I am looking for is a kind of reverse function for the drawing process.
Does anyone have any ideas?
I’d be over the moon if you did!
Cheers!

[c.pfaffenbichler]

I am afraid Photoshop itself at least won’t be »it« and I am not sure any Adobe application would fit the requirement. 
Have you asked over on the Adobe Fresco Forum? 

Have you seen any videos that show what you want to achieve done by someone else live? 

On the one hand the process sounds like something fairly straightforward, on the other hand it sounds like something fairly »niche« … 

The live-performance-aspect just doesn’t seem to chime with what most Adobe applications I am familiar with are targeted at. 

[henrikek22183186]

Thank you so much for the answer! 
You are completely right, it sounds so simple and turns out to be so complicated. 

No, I haven't seen anybody else doing this. 😞  I would just love to use it so much! Suppose I were to draw a spiral, then this spiral would dissolve again starting from the centre when I reach the outer circles... 
I asked as well in forums for live vj apps like vdmx and Tagtool, but no solution or no answer from there...

any ideas, where I could ask?

Adobe fresco, I didn't try yet...

cheers

henrike

[c.pfaffenbichler]

Ultimately it seems similar to onion-skinning so maybe After Effects? 

But that is intended for video editing, not live performance … 

[henrikek22183186]

:)) 

I will try on After Effects forum.

thanks for your help!

[Trevor.Dennis]

When you say 'Live' does this have happen to a line as you create it?  I mean as opposed to an animation of a line appearing to be created, and at a given time, the start of the line would disappear?  If you think about it, this would look like a length of cord was being pulled by the brush?  It would be rather like a very long brush smoothing leash.

What sort of background would there be?  If it was plain white, for instance, you could animate the line being drawn in black.  Then copy the video layer and invert it (to white, and move it on the time line according to the required delay.  The second layer would draw a white line over the back effectively making it appear to fade.  

I think this is going to come down to the details of how it needs to work, and what you mean by live performance?  You could always use magic.

[henrikek22183186]

Hi Dennis, that sounds like good magical idea!!! 😉 🪄 Thank you!!!

I wanted to do it really live, but as that seems so difficult, I could try your great idea for my next project.

Which app would you recommend I use?