Visual video adjustments
The Adjustments page lets you configure the device to manage slight shifts in the data and the color mode you're capturing from.
You can access this screen by selecting Capture » Configure Device » Adjustments or using the Epiphan applet in the Control Panel by selecting the video grabber you'd like to configure and clicking Configure Device or Default Configuration.
The main adjustments screen has the following appearance
| Item | Description |
|---|---|
| Horizontal shift |
Configure horizontal shift to offset the captured image position. For example, a captured image shifted slightly to the right (horizontally) can be corrected with minor adjustments to the horizontal shift settings. Increasing the value entered in the Horizontal Shift field shifts the image to the right, decreasing it shifts the images to the left. |
| Vertical shift |
Configure vertical shift to offset the captured image position. For example, a captured image shifted slightly downward (vertically) can be corrected with minor adjustments to the vertical shift settings. Increasing the value entered in the Vertical Shift field shifts the image up, decreasing it shifts the images down. |
| Set offset/gain (brightness/contrast) VGA sources only |
The offset and gain settings control the image brightness and contrast respectively. Increasing the offset control causes the image to become darker. Increasing the Gain control gives the image more contrast. |
| Sampling phase VGA sources only |
This setting adjusts the vertical synchronization properties of the image. You may need to change it when there is a repetitive distortion or blurriness on the horizontal axis of the image. Adjust the setting in small steps until a sharper image is displayed. |
| PLL adjustment VGA sources only |
This setting is used to squeeze or stretch the image horizontally. |
| Prefer wide VGA mode VGA sources only |
This checkbox allows Wide Aspect Ratio VGA modes to be displayed by the video capture application window. The Epiphan USB device driver may not be able to determine whether the video source is sending a wide video mode signal. You can select this option if your video source uses a wide video mode to make sure that the Epiphan USB device driver selects a wide video mode. |
| YCrCb capture |
Generally your DVI2USB 3.0 auto-detects input type, but in case of an issue where the input type isn't detected, you can select this checkbox to capture analog component video with YCrCb encoding. |
| Swap interlaced fields |
When capturing from some sources, the video grabber cannot correctly determine the order to place interlaced lines. Use this checkbox to resolve the issue. |
