Developer Notes

This only affects the viewport. Final exported renders should render the video material correctly.
Description

On Mac devices, the video material in the viewport will display incorrectly, appearing stretched significantly. This only seems to affect the viewport and not rendered exports.

Steps to Reproduce

Drag a video material onto an object or drag & drop an LED wall (video enabled)

--> The video seems stretched at max, we can only see pixel changing colors

Workaround
-Open the Epic Games Launcher and go to the Twinmotion page
-Using the gear icon next to the launch Twinmotion button, select Settings
-Add -sm5 as an additional command line argument

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There's no existing public thread on this issue, so head over to Questions & Answers just mention TM-22301 in the post.

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Unresolved
CreatedOct 21, 2025
UpdatedNov 24, 2025
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