I tend to believe this type of video more partly because there's no-one saying OMG WTF and over acting etc.
The young man saw a round white object in the sky while leaving his aunts house. He asked his dad to stop and he got his camera and recorded this video at about 5:54 PM.
There is a lot of camera shake in some close up shots but I've watched it a few times and the object seems to be shaking with the clouds.
I can not see any extra movement that might be caused by a misaligned computer graphic overlay.