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Mixing 4k Footage with 1080 on Vmix. Confused by setting?
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powerboss101  
#1 Posted : Sunday, September 11, 2022 9:38:48 PM(UTC)
powerboss101

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Hey all,

I have 4k source from a Sony A7s 2 2160 25p> Hdmi Micro 2 Hdmi > ATEM 1 M/e > BM 8k Pro Capture Card

My vmix project is setup to be 1080 25p, when I have added the camera to vmix the composition setting is 3840x2160 25p, when I switch between a 1080 composition and this one I was expecting the 4k camera to appear in the output cropped but it appears to show the full frame. Does Vmix automatically scale the 4k compositions to be the project settings?

If I wanted to crop in my 4k footage to have it essentially zoomed in, would I do this in the composition of the camera by setting the scale? Or is there another way to do it?

Thanks
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zenvideo  
#2 Posted : Monday, September 12, 2022 4:04:12 AM(UTC)
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Originally Posted by: powerboss101 Go to Quoted Post
Does Vmix automatically scale the 4k compositions to be the project settings?

Yes.
Originally Posted by: powerboss101 Go to Quoted Post
If I wanted to crop in my 4k footage to have it essentially zoomed in, would I do this in the composition of the camera by setting the scale? Or is there another way to do it?

Set your project to 4K in order to zoom in on the 4k footage, but down-convert to 1080p when encoding for the Stream output (or the main Recorder).

(Edit:- That's one way, but as revealed below, it may not be necessary.)
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admin  
#3 Posted : Tuesday, September 13, 2022 1:53:18 AM(UTC)
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Important note to add, vMix will preserve the 4K resolution even if the project is set to 1080 for the purposes of zoom etc.
So if you zoom in to a 4K source, vMix zooms in before scaling to 1080.
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thanks 1 user thanked admin for this useful post.
eduardocfs on 9/13/2022(UTC)
powerboss101  
#4 Posted : Tuesday, September 20, 2022 1:51:48 AM(UTC)
powerboss101

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Originally Posted by: admin Go to Quoted Post
Important note to add, vMix will preserve the 4K resolution even if the project is set to 1080 for the purposes of zoom etc.
So if you zoom in to a 4K source, vMix zooms in before scaling to 1080.


so to confirm, if my project is set to 1080. I can zoom in on the 4k camera composition and it will be 1080 resolution up to 200% scale?

Thanks
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