Changing frame rate isn't as simple as relabeling the FPS metadata. Going from a lower to a higher frame rate requires generating new frames that didn't exist in the source. The tool can duplicate existing frames (fast, but may look choppy) or use motion interpolation to synthesize intermediate frames that blend neighboring originals. Going from a higher to lower frame rate means dropping frames, which can cause jerky motion if not handled carefully. The converter analyzes scene changes to drop frames intelligently and minimize visual artifacts.