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A video has a variable frame rateΒΆ

You see: Variable frame rate detected: "This file has a variable frame rate. Frame numbers may not be reliable for marking or export." The video opens anyway.

Why: Screen recordings and phone video often save frames whenever they arrive rather than at a steady rate. ShotWork counts in whole frames at one rate, so in such a file a frame number may not point at the same picture in the viewer, in a thumbnail and in an export, and a cut can land a frame off.

Fix:

  1. Convert the video to a constant frame rate. In your editor, export it at the rate it was meant to be, such as 24 or 30 fps. In a converter such as HandBrake, set the frame rate to a fixed value and pick constant rather than variable.
  2. Open the converted file in ShotWork and mark your shots there. Marks made on the original do not carry over, because its frame numbers are the unreliable part.

If that didn't work: A file you cannot convert can still be marked for review. Keep the marks loose by a frame or two at each end, and check an exported clip before you rely on it. See Supported media.