This really is all pretty absurd. As someone mentioned upthread, if he had severe injuries as he claimed (as per his father), then there should be police records, EMT records, etc. The video, or interpreting whether the one cop was inspecting his head, are more likely to reflect a confirmation bias than anything else.

Zimmerman’s story is either corroborated by the existing evidence or it isn’t. The video is pretty irrelevant, IMO.

This will be all much clearer once it is made public what why the lead investigator wanted to charge him with manslaughter.