What does a eraser tool do in Ae and what kind of project can be done with it?

[Rbk95]

Can you please explain the list i stated :

1.What can it do in any video?

2.What is RGBA?

[Roland Kahlenberg · Accepted solution]

AE's Eraser Tool is most often used, by me, to clean up Alpha Channels, for VFX shots.

RGBA is part of the Channels parameter - the Channels parameter is where you define the image Channels that the Eraser (and the other Brush Tools in AE) will affect. RGBA means you'll be affecting the Color Channels and the Alpha Channel. For cleaning up mattes (Alpha Channels) for VFX-type shots, I'll almost exclusively set Channels to Alpha.

More info on AE's Brush/Paint Tools here -

Use the After Effects Brush, Clone Stamp, and Eraser Paint tools

[Rbk95]

Thanks for the definition you've written about..that helped me some....i got after effect s reference pdf book

[OussK]

With Erase tools you can erase a part from video file, picture, composition or any pixel source file, the RGBA mean RGB channel + Alpha channel, so you can erase only the RGB (the color channel) or Only the alpha or both channel RGBA.

to learn more about erase tools please check this small tutorial

[Rbk95]

OussK i already saw that video i just wanted to know about this tool like what can it do or what kind of video can be used?

But Thanks for the answer anyways...