Image darkens when video in fullscreen

ParkerLewis · 21st August 2018, 14:46

Hi,

Title says it all.

Whether using MPC-HC or VLC, the image darkens when I put the video in fullscreen. It brightens again if I move the mouse or get out of fullscreen.

I tried deactivating hardware acceleration (at least in MPC-HC), but it didn't change anything. Tried rebooting etc, nothing either.

I am on a desktop, Win 10 Pro 64 bits, and my CG is a Geforce 770 with latest drivers. I just noticed this behavior today but it might have been going on a while.

Any ideas ?

Thanks for your help.

huhn · 21st August 2018, 15:44

local dimming? what type of screen is used?

ParkerLewis · 21st August 2018, 17:57

It's a Samsung TV (UE46F6400). It is itself configured in Game Mode, Dynamic Contrast is off, and other filters are (should be) off as well.

It does only seem to happen on dark scenes, ie :

- on bright or "normal" scenes, I'm not noticing any particular behavior / difference between fullscreen vs (non fullscreen or moving the mouse when in fullscreen)
- on dark scenes, the whole screen darkens suddenly when in fullscreen vs (non fullscreen or moving the mouse when in fullscreen).

huhn · 21st August 2018, 18:28

what about the backlight settings?

SeeMoreDigital · 21st August 2018, 18:34

And 'Eco' settings...

Asmodian · 21st August 2018, 18:49

This sounds like an edge lit dimming backlight. That TV has "Dimming Technology: Micro Dimming".
https://www.samsung.com/us/video/tvs...400AFXZA-specs

ParkerLewis · 21st August 2018, 19:06

There is no dynamic backlight setting available (or none that is on at least). The backlight setting is at 10/20. All Eco settings are off.

Should I turn off all backlight always and readjust Brightness ?

21st August 2018, 14:46	#1 \| Link
ParkerLewis Registered User Join Date: Oct 2006 Posts: 42	Image darkens when video in fullscreen Hi, Title says it all. Whether using MPC-HC or VLC, the image darkens when I put the video in fullscreen. It brightens again if I move the mouse or get out of fullscreen. I tried deactivating hardware acceleration (at least in MPC-HC), but it didn't change anything. Tried rebooting etc, nothing either. I am on a desktop, Win 10 Pro 64 bits, and my CG is a Geforce 770 with latest drivers. I just noticed this behavior today but it might have been going on a while. Any ideas ? Thanks for your help.

21st August 2018, 17:57	#3 \| Link
ParkerLewis Registered User Join Date: Oct 2006 Posts: 42	It's a Samsung TV (UE46F6400). It is itself configured in Game Mode, Dynamic Contrast is off, and other filters are (should be) off as well. It does only seem to happen on dark scenes, ie : - on bright or "normal" scenes, I'm not noticing any particular behavior / difference between fullscreen vs (non fullscreen or moving the mouse when in fullscreen) - on dark scenes, the whole screen darkens suddenly when in fullscreen vs (non fullscreen or moving the mouse when in fullscreen). Last edited by ParkerLewis; 21st August 2018 at 18:12.

21st August 2018, 18:34	#5 \| Link
SeeMoreDigital Life's clearer in 4K UHD Join Date: Jun 2003 Location: Notts, UK Posts: 12,227	And 'Eco' settings... __________________ \| I've been testing hardware media playback devices and software A/V encoders and decoders since 2001 \| My Network Layout & A/V Gear \|

21st August 2018, 18:49	#6 \| Link
Asmodian Registered User Join Date: Feb 2002 Location: San Jose, California Posts: 4,407	This sounds like an edge lit dimming backlight. That TV has "Dimming Technology: Micro Dimming". https://www.samsung.com/us/video/tvs...400AFXZA-specs __________________ madVR options explained

21st August 2018, 15:44	#2 \| Link
huhn Registered User Join Date: Oct 2012 Posts: 7,926	local dimming? what type of screen is used?

21st August 2018, 18:28	#4 \| Link
huhn Registered User Join Date: Oct 2012 Posts: 7,926	what about the backlight settings?

21st August 2018, 19:06	#7 \| Link
ParkerLewis Registered User Join Date: Oct 2006 Posts: 42	There is no dynamic backlight setting available (or none that is on at least). The backlight setting is at 10/20. All Eco settings are off. Should I turn off all backlight always and readjust Brightness ?