Color Correction effects: Tint effect not working

[TonyMH]

I have a issue with tint effect not working. I made a black tint on a video that should show as a black and white but its a solid black and won't adjust for tint amount. If I move the adjustment amount to 0 it stays black. I have a few screen shoots. I tried a few other effect filters and they work fine. Is there a setting I missing?

[OussK]

there is no reason for that, did you try to use the tint on different footage? and it is work or not? because i think maybe you have a issue with your footage

[TonyMH]

Yes, I've tried usng different footage and the same thing happens. I think its an isusse with the tint effect itself. I'll try uninstalling and do a fresh install to see if it fixes the issue.

[Rick Gerard]

Setting Map Black to Black and Map White to White will not change anything. 

If you want to change the layer to Black and White, use the Black&White effect. You can then control the luminance values of the various colors. In the same way, adding a red filter to a camera shooting black and white film turns the sky dark.

[TonyMH]

Hello Rick,

I'm following the training video on LinkedIn Learning called "After Effects 2021 Essential Training: The Basics". In the training video, the instructor uses tint in the same way only the footage in the comp turns b&w, and he is about to adjust the amount of tint to fade the footage back to color. I can't do that at all with tint. I can change the black maping to a different colors, yes, but the tint amount will stay the same whatever its 100, 50 or 0. Now I can use other effects to follow along but tint effect looks to be broken.

[TonyMH · Accepted solution]

I found the answer and it was from one of your old posts answers How to enable gpu rendering/CUDA in after effects 2020 (trapcode form and plexus)?

After uninstalling and reinstalling, I tried tint again and the effect still did not work. I tried other effects again and they seem fine so something was different about tint effects. The Adobe help link clear up what setting was breaking tint: The Tint effect uses GPU acceleration for faster rendering. So doing a search for gpu acceleration I found and tried your answer there to fix it and it worked!

Project Panel > Project Settings > Video Rendering and Effects > Mercury Software Only