Upscale or downscale your video image – Epiphan VGADVI Recorder User Manual

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VGADVI Recorder User Guide

3-2 Fine-tune channel configuration

Upscale or downscale your video image

If your source input is larger than your desired output frame size or if you want to stream a less bandwidth-

hungry version of the content, you can downscale the source by specifying a frame size that uses the same

aspect ratio. By contrast you can also enlarge the image by selecting a value that is larger than the source

resolution.

The VGADVI Recorder conveniently provides a list of common aspect ratios and different frame sizes at each

ratio on the Stream Setup page.

For example:

input signal resolution is 1920×1080 (a 16:9 aspect ratio)

select another 16:9 frame size such as 1280×720

The smaller frame size will downscale the image and use less bandwidth to transmit.

If you select a frame size that is not the same aspect ratio as your source, the result is one of having a matte

(bars) appear around the image, or the image is stretched. See

for details.

Resizing a video can be more resource intensive rather than leaving the video at a native

resolution. Although you can change the resolution at the VGADVI Recorder level, it is less of a

burden on your system resources if you can change the resolution at the source level. However if

that is not feasible, you can download an EDID to the VGADVI Recorder to force the source to send

To change the frame size of your video, follow the steps below.

1. Connect to the admin interface using your preferred connection mechanism. See

2. Login as admin.

3. Click Stream Setup; the stream setup page opens.

4. Scroll to the frame size parameter.

5. Deselect Use current signal resolution as frame size, if it is selected.

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