About # of optical flow frames and # of image frames

[dqj5182]

Hi!

I am having this question, because I am not familiar with optical flow.

But I wish to know how to handle the issue (not a correct issue to be honest) that optical flow has always one frame less than image frames. For example, it is inevitable that there are only 363 frames of optical flow from 364 frames of images (as optical flow is difference between two images).

I guess I have to make first frame of optical flow as no optical flow. So, I guess my question is how can I create the "no optical flow" optical flow image for the very first frame?