With me is opposite. I don't dare to do any of exercises before and right after running. I only walk very fast, that is all that I do. I have impression that stretching for instance causes me slight pain in hamstring area for days. And it is always left leg (that was injured last year).
What I do sometimes, regardless of running: are squats, and exercises for hamstrings, because I feel that my hamstrings are somehow weak) . Next week I'll start with wall seat. I like it because it is static exercise, and I hope it will improve strength in targeted muscles.
What do you think of benefit for running, of such exercise so called wall seat?

And, about the video that you shared, I've got aware as many times before, that my left leg is not stable as right. That is basicly the reason why am I doing these exercise from time to time. But sometimes I just forget