Although this clip was really short, I found it very interesting.
I'm not sure but I thought that the big clod represents the many conflicts that happen in our daily lives. (not just natural disasters like earthquakes or tsunami, but also like the little fights between your mom.)
And us humans are the little clod that gets eaten up by the big clod, and becomes free again. I thought that what it means is that we have some sort of conflict going on every day, but somehow we overcome it.
At the end, the line of the big clod seemed endless, which probably means that there will always be another catastrophe waiting for us. But that's just how life goes so I guessed this video is about the life cycle of us human.