X4K1000FPS is a dataset for video frame interpolation. The dataset is characterized by high resolution (4096 X 2160 pixels), high frame rate (1000 fps), and extreme motion.

The dataset is divided into two parts:

• X-TEST consists of 15 video clips, each of which has a sequence length of 33 frames. The selection of the test set takes into account the degree of occlusion, the size of optical flow, and the diversity of scenes.
• X-TRAIN contains 4,408 video clips from 110 various sports scenes. The sequence length of each clip is 65 frames and they are uniformly cropped to 768 X 768 size.