Add more property interfaces for usb web camera?

NTDEV
1

Dear tim:

Now i am add more property interfaces for hardware setting. And i find “Low Light Compensation” locates at Camera Control property page. However, I can’t active this
interface. Does it belong to any other property pages?

2

You wrote:

Now i am add more property interfaces for hardware setting. And
i find "Low Light Compensation" locates at Camera Control property page.
However, I can't active this interface. Does it belong to any other
property pages?

There is a backlight compensation property in PROPSETID_VIDCAP_VIDEOPROCAMP. Is that what you mean? I'm not aware of a separate low light compensation setting. The backlight compensation is a bit of a problem, because lots of cameras like to define a region for backlight comp, and the standard property doesn't do that.

However, remember that you can add whatever properties you want, and display your own property page to control them. That's what a ksproxy plugin is used for.

Tim Roberts, xxxxx@probo.com
Providenza & Boekelheide, Inc.

3

>There is a backlight compensation property in PROPSETID_VIDCAP_VIDEOPROCAMP. Is

that what you mean? I’m not aware of a separate low light compensation setting.

No, it is not backlight compensation property. It’s dispalyed as a check box, and it’s name is Low
light compensation, and it is not a property of PROPSETID_VIDCAP_VIDEOPROCAMP.

4

zhou_5129327@163.com wrote:

> There is a backlight compensation property in PROPSETID_VIDCAP_VIDEOPROCAMP. Is
> that what you mean? I’m not aware of a separate low light compensation setting.
>

No, it is not backlight compensation property. It’s dispalyed as a check box, and it’s name is Low
light compensation, and it is not a property of PROPSETID_VIDCAP_VIDEOPROCAMP.

Ah, yes, I see. This is KSPROPERTY_CAMERACONTROL_AUTO_EXPOSURE_PRIORITY
within PROPSETID_VIDCAP_CAMERACONTROL. It’s only available in XP SP2 or
later.

–
Tim Roberts, xxxxx@probo.com
Providenza & Boekelheide, Inc.

5

I get it. Thank you!