[bite_your_idols]

@bite_your_idols random thought: changing v4l parameters might fail if hyperion is accessing the /dev/video device - have you tried stopping hyperion before that?

Also you seem to be running the "official" hyperion version, not the LE addon version - have you tried using the hyperion addon from the LE repository instead?

I'm using hyperion with the dispmanx grabber, previously the precompiled version from hyperion and since some time the LE addon version - didn't have any issues so far with any of that in 8.2 and milhouse builds.

so long,

Hias

Yes I stopped hyperion before trying to change parameters.
In this tests I use "official" hyperion installation with "official" hypercon because with LE addon and LE hypercon I can not make screenshots... I don't know why.
But I tried both official installation and LE addon and in LE9 testbuils starting from 0220 external grabber is extremely dark so my leds don't show any light when watching external video sources...

I will stay in LE8 where it works like a charm and I will continue checking if LE9 testbuilds receive any improvement or correction for this issue.
Thanks