Preview Scaling

The Preview Scaling setting may be used to reduce the resolution of video processing when you are using a fair amount of filters, transitions, and track blending. This may help with the performance during the editing process.

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However, keep in mind that the source video or images must typically be scaled down to the designed preview scale, and that will have a processing cost.

The submenu lists only the vertical resolution. The horizontal resolution depends on the aspect ratio of your project.

  • 360p is a good choice on a 1080p screen or less
  • 540p is good choice when working on a high density screen or screen with resolution > 1080
  • 720p is a good choice when working on a 4K screen or with 4K UHD footage and you want to get a
    little more clarity

Preview Scaling was added in version 20.02.

Export

Export > Advanced > Video has the option Use preview scaling.

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This is intended to provide a faster export for draft review. You should leave the export resolution set to the project resolution unless your preset or video codec dictates a resolution.