Magewell USB Fusion HDMI & USB Video Capture Device - Manual (Page 36)

Fit & Fill
The canvas size is 1920x1080, and its aspect ratio is 16:9. When a source has
black borders around or at both sides, you can double-tap to switch between
the Fit and Fill modes.
Scale Up & Down
You can use scaling tools or gestures to scale sources.
Using the Scaling Tools
1. On the canvas, tap a source. Skip this step for a single-view scene.
2. Tap or long press the scaling tools above the canvas.
Fit means that the source will be proportionally scaled to the maximum that
can be completely contained in the canvas. There might still be black
borders at the upper/down side or left/right side.
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Fill means that the source will be proportionally scaled so that it exactly fills
the canvas with no black border, and its excess part outside the canvas will
be cropped.
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When a source is larger than the canvas (1920x1080), it will be
automatically scaled down to be fully shown in the canvas.
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The small picture in a PIP layout does not support this operation. If
you need to scale the small picture, you can refer to scale the small
picture .
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: scale up. Tapping once scales up by 1%, while long pressing
continuously scales up the source.
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