Looks like a charge to me
That is my point exactly ! Most folks don't see enough bears to be able tell the difference.
It does look a lot like one except for the fact that the bear's head is up. In a serious charge the ears are back and the head down.
Most folks do have a decent understanding of dog behaivior and if you are familiar with them you have a good idea of when it is simply trying to scare you and when you are likely to get bit.