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Epiphan VGA2USB Pro User Manual

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18. Advanced topics

Configuring DirectShow options

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Epiphan Frame Grabber

Default

Image

Select an image to be sent to DirectShow if the

Frame Grabber is not sending images to the video

capture workstation. This option replaces what

would otherwise be a blank screen with a static

image that would be captured by DirectShow-

compatible image capture applications.

Scaling

If Fix Resolution is set to a resolution that does not

match the actual resolution of the video signal you

can select Pixel Resize to have the Epiphan USB

device driver resize the image (either shrink or

expand it) to match the fixed resolution. Pixel

Resize is a simple resizing method that adds or

removes pixels as required to resize an image.
If you set scaling to No Resizing the Epiphan USB

device driver does not resize the image sent to

DirectShow. If the actual resolution of the video

signal is smaller than the fixed resolution, the

image appears in DirectShow compatible video

capture applications with a border around it. If the

actual resolution is larger than the fixed resolution,

the image appears cropped in DirectShow

compatible video capture applications.

Flip image

vertically

Select this option to turn the captured image

displayed on the video capture application upside

down. If you select this option, the image in

recorded videos, the image that is copied when

you select Copy from the Edit menu, printed

images, and broadcasted images are also upside

down. Images saved by selecting Save from the

File menu and recorded image files are not affected

by this option.

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