I assume that means you use a filter or something literally called “brightness”. If your app offers an option called “exposure”, try that instead. I tend to get more desirable results using that for brightening photos.
Unlike brightness, exposure is highly biased towards the highlights in the picture. In layman language, it will act as if increasing the amount of light in the picture, without much affecting the darker areas in the picture.
Regarding the title, what types of filters, effects, etc. do you use to brighten these dark TV/movie screenshots?
Just using the provided Android Gallery tools.
I assume that means you use a filter or something literally called “brightness”. If your app offers an option called “exposure”, try that instead. I tend to get more desirable results using that for brightening photos.
https://www.lightxeditor.com/blog/exposure-vs-brightness/