That would make a significant difference. The way it looks at first the cop is telling him to "get up", and then proceeds to shoot.
Not to blame the victim here, but the only smart reaction to a cop with a drawn gun is to be quiet, wait for, and follow instructions - approaching is never a good idea, nor is arguing.
"Don't GET UP" is a very poor choice of words, and if he was not getting up WHY repeat the command? Fishy.....
Next question is, do we have the whole tape? Don't forget Rodney King where the news only showed the cops beating King and conveniently left out the footage of him repeatedly trying to brain police officers.