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Video Inputs Turn Green on NVIDIA GPUs - vMix 29.0.0.33 Green Screen Issue on NVIDIA GPU — Rollback to 29.0.0.25 Fixes It
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maej  
#1 Posted : Thursday, October 23, 2025 1:18:36 AM(UTC)
maej

Rank: Newbie

Groups: Registered
Joined: 2/6/2022(UTC)
Posts: 5
United States
Location: Maryland
After upgrading from vMix 29.0.0.25 to 29.0.0.33, I started seeing a solid green screen on all video inputs—including intros, outros, and camera feeds on my NVIDIA GPU system.
Audio played normally, but the video output (both Preview and Program) was completely green, even while live streaming.

Affected Areas

MP4 intros/outros (H.264 encoded)

NDI and camera inputs

Virtual sets and chroma key layers

Cause (Based on Testing)

This appears to be related to changes in hardware decoding and DirectX rendering introduced in build 29.0.33.
While my AMD GPU system runs 29.0.33 with no problems, my NVIDIA GPU system shows green video across all inputs.
That suggests the issue is linked to NVIDIA’s driver interaction with vMix 29.0.33’s new video decoding path.
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admin  
#2 Posted : Thursday, October 23, 2025 1:44:10 AM(UTC)
admin

Rank: Administration

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Joined: 1/13/2010(UTC)
Posts: 5,255
Man
Location: Gold Coast, Australia

Was thanked: 4590 time(s) in 1589 post(s)
Hi,

So this is very strange. Your second post appears to be AI generated as it refers to settings that have never existed in vMix.
I am going to give the benefit of the doubt and assume that was some kind of mistake, but have to delete the post due to the potential for confusion for other users.

As for the issue you mentioned, this is absolutely not caused by anything in vMix 29.0.0.33 as there have been zero changes in the graphics pipeline since the versions you mentioned.
What is far more likely is the vMix update you did was not installed correctly due to programs still running on the system.
The symptoms of this are green inputs, due to the correct files not being available.

The fix for this is simple, restart the computer, make sure every program is closed, including background programs like Zoom and then install the latest vMix again.

Regards,

Martin
vMix
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thanks 1 user thanked admin for this useful post.
sinc747 on 10/23/2025(UTC)
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