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Understanding Zoom Levels
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Streamscape  
#1 Posted : Wednesday, November 23, 2016 9:03:25 AM(UTC)
Streamscape

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Hi All

I have a 4K camera input and I'm outputting at 720.

I want to create several virtual inputs and zoom into these inputs creating a vitual input which is 720 pixels high.

How does the 0-5 zoom levels in the position panel represent a percentage of zoom in? Are there any figures to zoom at 1080 and 720?

Any help appreciated.
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mjgraves  
#2 Posted : Thursday, November 24, 2016 12:09:06 PM(UTC)
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Your best option is to create a 4K image that has a number of 720 & 1080 sized targets and experiment with zoom/crop/placement to work out the numbers. That way there's no guessing.
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thanks 1 user thanked mjgraves for this useful post.
Streamscape on 11/26/2016(UTC)
Peter B  
#3 Posted : Friday, November 25, 2016 6:03:36 AM(UTC)
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With a UHD source and a 1920 project, max zoom is 2.
A UHD source and 1280, zoom is 3.

3840 / 1920 = 2
3840 / 1280 = 3

A very useful feature of vMix.
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thanks 2 users thanked Peter B for this useful post.
Streamscape on 11/26/2016(UTC), mjgraves on 11/29/2016(UTC)
Streamscape  
#4 Posted : Saturday, November 26, 2016 7:49:57 AM(UTC)
Streamscape

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mjgraves - brilliant idea - thank you

Peter B - That makes sense - thank you.

Cheers
David
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