Roto Brush 2 Black Screen while switching to Best Quality

You should set the Comp Panel resolution to Full before opening the Paint workspace and using Rotobrush. It would help if you also trimmed, then pre-compose all footage that needs to be Rotobrushed. Make sure you Trim the Pre-comp to the layer length. Pre-composing will avoid having a clip in the Layer panel longer than the clip in the comp. It also allows you to pre-mask areas you don't need to worry about and even do a little hand rotoscoping or manually roto in Mocha AE before Rotobrush is applied to the pre-comp. I almost always run a little color correction before I pre-compose to improve the edge detail and contrast in the shot so Rotobrush will have a little easier time finding the edges. 

I suggested the Paint workspace because it is more efficient and gives you access to all needed tools without digging through menus.

Let us know if any of those suggestions help. 

Hi Rehan256001742z2a,

That's strange! Sorry for your issue.

Could you share the following details so that we can troubleshoot the issue properly:

• What are your system specifications (CPU, GPU, RAM, OS version)?
• What's the exact version of After Effects?
• What's the format/codec of your footage?

Let us know, we're here to help.

Thanks,

Nishu