Standalone VGA Grid User Guide
3-3 Fine-tune channel configuration
Video encoding profile and preset can be set only when the H.264 codec is selected.
7. Click
Apply.
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.
It is less resource-intensive to upscale or downscale your video at the source (i.e. at computer,
camera, etc). If that isn't feasible, or if you are scaling for multiencoding, follow the steps below to
scale your video.
The Standalone VGA Grid conveniently provides a list of common aspect ratios and different frame sizes at each
ratio on the Encoding 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 than leaving the video at the native resolution.
Although you can change the resolution output by the Standalone VGA Grid, it is less of a burden
on your system resources if you change the resolution incoming from the source.
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