I’m facing an issue where vMix is blurring the edges of titles specifically when using an alpha channel.
I’m sending titles from one machine to another via NDI—when I disable the alpha channel, the capture in vMix works perfectly. However, with the alpha channel enabled, the problem reappears only at the boundaries between transparent and opaque areas, or on elements with semi-transparent backgrounds.

The first photo shows the output from NDI Studio Monitor, and the second shows the input in vMix.
This is happening entirely within a single vMix instance—both sending and receiving are handled by the same vMix setup.

Both systems are running the latest vMix versions, with progressive settings everywhere.
Attached are screenshots of my output settings and the incoming signal.

Has anyone encountered this? How to fix it?

The graphics are animated and appear in different areas, sent via a single NDI stream.
I even downloaded OBS, applied the same scenes/inputs for comparison, and added the NDI source there—it works fine, no blurriness.
The issue seems isolated to vMix’s NDI capture when alpha channels are involved.

I’ve tried resetting vMix settings, reinstalling it, but no luck.
Settings are shown in the screenshots attached to the post.

I would suggest contacting support and sending a Support Report in vMix with your setup.

https://www.vmix.com/contact-us.aspx

My guess is there is multiple layers or some other settings enabled that are messing things up.
See the shortcut below of vMix NDI out to vMix NDI in with alpha, on top of a grey input, you can see the edges look fine:

Colour 22 April 2025 20-34-21.png (63kb) downloaded 23 time(s).

P.S image uploads should be fixed now