Videoconfig. adjusting contrast, brightness, gamma etc.

Feature requests for VLC.
Futile

Videoconfig. adjusting contrast, brightness, gamma etc.

Postby Futile » 07 Dec 2003 13:16

This is my last request. If all my requests is implemented VLC will be able to replace all of my current players (Win MediaPlayer 9, Zoom player, BS-player and Winamp).

In MediaPlayer 9, adjusting brightness levels is a breeze. This is a function that all players need to have. All to often brightness is to high and details are losed as they blend into eachother.

Sometimes colors are pale, or to bright. Contrast is also something one have to be able to adjust.

Give us a smart controll for these factors, please!

Thank you so much for all your efforts with VLC!

zorglub
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Postby zorglub » 08 Dec 2003 12:26

Hello,

This is implemented in VLC 0.6.2, but rather hard to use (you have to go in two different places in the preferences).

In VLC 0.7.0, there will be sliders for this on the main interface.
(try the beta: http://www.videolan.org/pub/testing/vlc-0.7.0-test1)

At the moment, you must stop/start to enable or disable image adjusting, but adjust is done in real time
Zorglub
Clément Stenac

irkuck

Colors/saturation

Postby irkuck » 24 Dec 2003 18:16

Hello,
In VLC 0.7.0, there will be sliders for this on the main interface.
(try the beta: http://www.videolan.org/pub/testing/vlc-0.7.0-test1)
I have the following problem concerning colors and contrast.

When I open vlc the window message says that it
is in hardware YUV overlay Directx output mode . Picture is then bright and very good looking on LCD monitor. However, when I open
second VLC window on the screen
vlc says now it is in the software RGB Directx output mode. Picture is then way too dark (and/or contrast is too high).

It looks like both modes are not treating the picture in the same way. So when somebody (like myself) needs multiple vlc windows
at the same time this looks very inconsistent, first vlc window is perfect and next is not.

Of course there will be sliders in the next version so this can be corrected manually. But since hardware and software modes are different this will not be consistent solution

So the question is why there are such big differences in the default values for hardware and software DirectX output modes and if software mode can be preadjusted to be visually identical to the hardware mode?

Dnumgis

Postby Dnumgis » 27 Dec 2003 12:12

This sounds to me like some messed up settings in the windows control panel. As far as I know vlc does not do anything different uin the two cases

BigBen
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Postby BigBen » 29 Dec 2003 21:09

Looks as if your videocard (as most ones, if not all of them) was unable to have more than 1 video by output using overlay. That means that, on the first video output, YUV->RGB conversion is made by the video card, while it is done by VLC itself in other cases.

In the second case, the video output refects the brightness / gamma settings of the desktop, not the first one (AFAIK).

that could explain the differences.
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BigBen

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eltouco
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Re:

Postby eltouco » 04 Dec 2007 22:05

Looks as if your videocard (as most ones, if not all of them) was unable to have more than 1 video by output using overlay. That means that, on the first video output, YUV->RGB conversion is made by the video card, while it is done by VLC itself in other cases.

In the second case, the video output refects the brightness / gamma settings of the desktop, not the first one (AFAIK).

that could explain the differences.
Hi

I have another explanation
this behaviour can be reproduced with only one instance of VLC running
if Video output is choosen as directx , the video gray color become black
if the video output is choosen as direct3d, the color seem to be correct.

I made some few researches and found that directx and direct3d have different YUV rendering
when playing a DVD the YUV value are between 16 and 235, one render RBG value between 16-235 the other exapnd to 0-255

by the way, i didn't find any doc about directx and direct3d in videolan documentation, should be useful to know that are the difference since the option is proposed ?

Touco


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