Banding

[meetenshah]

Hi

I use resolume frequently . I have a sender card connecting to a videwall.
The sender card is set at 8bpc color depth. And my content was made in 16bpc after effects.

I see a lot of banding when i do some smoke animations.

My sender card has only 2 options. 8 or 12 bpc.

How can i resolve this issue, Im using MBP 2017 OS X Mojave.

Regards
Meeten

[Zoltán]

Is the Video wall set to full brightness?
Do you also see the banding in the output preview?

[meetenshah]

HI

Sorry was busy with events.

No, i have gone down to even 10% brightness.
No banding in preview, and if u use a flat led tv, its perfect. So i know its the sending card.
But again the sending card is only going to 8 bit or 12 bit color depth.

It works fine with graphics but as soon as i play even a video, the skin of the person or even the background because of lighting starts to show banding. Or even smoke effects will show banding because of the gradient.

Please help

[Zoltán]

Your led wall won't be able to do better color resolution at 10%, basically you're using only 10% of the 8 bits resolution your wall is probably capable of.

[meetenshah]

Hi

I dont know what that means.
Ive used 10% to all the way 100%.

And at 10% its less banding then at full.

But just experimenting ive found if u reduce the brightness and contrast it does make a difference.

[Zoltán]

That means that the LED walls are usually only able to display specific brightness levels.
At 100% your full range per color at 8 bits would be 256 steps, if you limit the brightness to 10%, you can only use 25 steps per color, so you lose a lot of color resolution and see banding.
At least that's how the walls I worked with functioned.
Using 10 bits per color should give you a better result, but check with the LED manufacturer for the best settings.