Is it possible to change brightness in video play back?

Is it possible to change brightness in video play back, without having to go to settings?
If not, then who agrees this should be possible?
I’m sure most iphone users have the stock brightness setting set to low to save battery power, but it’s very irritating when you go to watch a video in bright lighting conditions and in order to see it properly you have to go back out and change it.
I am not computer programmer, but I’m sure it would be possible to have a slider (just like the volume) and could be introduced in a update.
I think it would improve the overall iphone experience just that little bit more.
What do you think?

All Help > System Info does is to report your system specifications so you can copy and paste them in the forums for troubleshooting purposes.
You can choose what to highlight and copy, but it does not change anything in your system like editing a configuration file would.

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Is it possible to change brightness in video play back?

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