put the following pre-trained weights into dir 'models':
you need to spilt video into frames in dir 'input' using ffmpeg
for 4x interpolation:
python interpolate_video.py --scale=0.5 --times=4
recommend: scale=0.5 when input frames resoultion is 1080p, scale=1.0 when < 1080p
python interpolate_img.py