Fudging the numbers or simple error?

WSMV has a video report from Sen. Marsha Blackburn's (R) town hall meeting this morning. While reporter Cara Kumari describes that the meeting room had hundreds in it, that folks streamed out the doors, that the hallway was flooded with folks, that hundreds were turned away and that "900 showed up" the label at the bottom of the video view says "500 attend Blackburn's town hall."