Troubleshooting
Last updated
The app will not start
Section titled “The app will not start”Lumit requires a GPU for rendering. You need a GPU that supports D3D12, Vulkan, or Metal.
Windows shows “Windows protected your PC”
Section titled “Windows shows “Windows protected your PC””The build is not code-signed on Windows, so SmartScreen warns on first run. Choose More info → Run anyway. See Installation.
Media shows as missing
Section titled “Media shows as missing”The project stores a reference to the file’s path. If that file is moved or deleted, Lumit will be unable to find it and the asset reports it as missing.
To fix this, click the Relink button, and this allows you to locate the file to recover it. See Importing media.
Playback is slow, or quality drops while working
Section titled “Playback is slow, or quality drops while working”Under load, or while scrubbing values to try and provide realtime previews, Lumit may reduce quality. For smoother playback, lower the preview resolution and let the cache fill on a first pass. See Preview and playback.
Lumit is a compositor. If you have chosen to render every frame, Lumit will do so as efficiently as possible; unfortunately you will be limited by your own hardware, but where possible increase cache sizes to let Lumit reduce the need to render. Despite previews not always being realtime or taking time to render, Lumit aims to provide a responsive interface regardless of what’s rendering.
Does exporting look the same as what I see in the Viewer?
Section titled “Does exporting look the same as what I see in the Viewer?”It may not. Exporting allows you to change certain options, including resolution and frame rate. Despite this, export will always render at full quality. Any adjustments you’ve made to the Viewer, such as changing the preview resolution, exposure, displayed grids, etc. are not seen by the export. See Exporting.