VGADVI Broadcaster 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 Broadcaster conveniently provides a list of common aspect ratios and different frame sizes at each
ratio on the Stream Setup page.
For example:
l
input signal resolution is 1920×1080 (a 16:9 aspect ratio)
l
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
Control the matte (black bars) in the video
output
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 Broadcaster 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 Broadcaster to force the source to
send a specific resolution. See
Force the video source to use a specific resolution
.
To change the frame size of your video, follow the steps below.
1. Connect to the admin interface using your preferred connection mechanism. See
Connect to the Admin
Interface
.
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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