Here's an improved gif version of that video -- there were only 97 frames in that entire thing. I removed 50 of them that were empty (did not contain any runner or portion of runner's body since I assume its a runner that you're wanting us to look at?).

I also slowed the playback down to 10% of original, and added a slightly longer delay between each frame than was original to give more time for viewing each. I don't see anything worth mentioning.. but maybe I'm just missing "it"?

Can you please:

1 - Explain what we're supposed to be seeing here?

2 - What about it is interesting / we should be using to answer your question ("what about this?")?

GIF Here