Video overlay

[kimiraikkonen]

Hi, I want to ask about important 2 things for overlay function:

1-Why are video overlay playbacks like DivX, MPEG2 are much more
brighter than non-hardware overlays?

For example, in BSPLAYER, overlay mixer mode 2 is enabled, if you have
a preview of video in Windows Explorer, then if you open the
video(double-click), the video is much more brighter and smoother than
opening it directly. Why? And is it normal (i suppose) ?

2- Does Geforce 4 MX440 have support for overlay gamma setting
adjustment? It's grayed out with Forceware 77.72.


Please reply, thanks in advance.

Best ragards...

 

[kony]

Hi, I want to ask about important 2 things for overlay function:

1-Why are video overlay playbacks like DivX, MPEG2 are much more
brighter than non-hardware overlays?

They aren't always, it depends on the values used by your
video card driver- see the settings in (windows?) Display
Properties.

For example, in BSPLAYER, overlay mixer mode 2 is enabled, if you have
a preview of video in Windows Explorer, then if you open the
video(double-click), the video is much more brighter and smoother than
opening it directly. Why? And is it normal (i suppose) ?

You'd have to look into what your software is doing, which
is a bit outside the scope of a hardware forum. Try
changing it's settings if this is a problem, or use the
Display Properties settings as mentioned above.

2- Does Geforce 4 MX440 have support for overlay gamma setting
adjustment? It's grayed out with Forceware 77.72.

Try a newer version of Forceware driver, and if it's too
bright, just use the brightness control instead of gamma.

 

[Mitochondrion]

Yeah, those GeForce MX cards are a little flaky on the driver side of
things, there should be a setting for Overlay Gamma somewhere,
otherwise I's play with brightness/contrast in DIVX codec itself

 

[kony]

Yeah, those GeForce MX cards are a little flaky on the driver side of
things, there should be a setting for Overlay Gamma somewhere,
otherwise I's play with brightness/contrast in DIVX codec itself

There's nothing wrong with the GeForce MX driver, it's the
same used by all more modern nVidia cards. This interface
has improved slightly over time, if the OP can't find the
settings it would be advisable to try a newer driver from
nvidia's website.

You are correct that the overlay controls can alter the
brightness, as could a codec control panel.

 

[kony]

Hi, I want to ask about important 2 things for overlay function:

1-Why are video overlay playbacks like DivX, MPEG2 are much more
brighter than non-hardware overlays?

What are you calling a non-hardware overlay? Generally an
overlay is the distinction between hardware, or not.

For example, in BSPLAYER, overlay mixer mode 2 is enabled, if you have
a preview of video in Windows Explorer, then if you open the
video(double-click), the video is much more brighter and smoother than
opening it directly. Why? And is it normal (i suppose) ?

It would seem one of the two is using the overlay and the
other isn't.

So you'd look at the following items to fine-tune it however
you want;

Video driver settings
Codec control panel (if it allows configuration)
Each video player's settings.

2- Does Geforce 4 MX440 have support for overlay gamma setting
adjustment? It's grayed out with Forceware 77.72.

Why are you trying to adjust gamma for what you just
described as brightness difference?

I'd try installing a newer driver, or possibly even an older
one as it might be a bug in that version? I'd tend to think
newer being better than older, at least until the 9x.xx
series which changes the interface completely which some may
like and others may not.