Video too bright, too dark or washed out (VGA sources only)
If the video from the source is too light, too dark or washed out, use the offset and gain controls together to optimize image quality. Increasing the gain amplifies weak signals but also increases noise, you must balance offset and gain values to achieve the best quality image.
Adjust these settings by the smallest values possible; compensate for a large change to one by making a large change to the other. Setting both offset and gain to high values can result in poor video quality.
- Login to the VGA Grid HD Encoder's Admin panel as admin. See Connect to the Admin panel.
- From the Admin panel, click Frame Grabber from the Configuration menu; the Frame Grabber Adjustments page opens.
- Scroll to Gain.
- Enter a small value, for example 1 to 25 in the field to brighten the image.
- Scroll to Offset.
- Enter a small value, for example 1 to 15, to balance the gain setting . The Offset value behaves as a contrast to the Gain value.
- Click Apply.
To view the output, add the source to a channel and click the View link from the Info page. You may need to make further adjustments to fine tune the brightness and contrast.