Sean is looking to get a video camera for private investigations work. He needs a camera that will "burn" the time/date stamp on the video itself as opposed to only being able to see that time/date stamp in the viewfinder.
Leo says that used to be a popular feature, but people have complained because they don't remember to turn it off. So it's fallen away as a feature in most video cameras. In that case, Sean may need a program that will read the meta data from the video and burn it into the image while importing to the PC. Final Cut Pro and Adobe Premiere both support this.
PadreSJ in the chatroom suggests Visual AVCHD TimeStamp. It will add timestamp to the AVCHD files.
Sean also wants to know if there's an app that will do the same thing for video off of smartphones like the iPhone. PadreSJ says that Stampr is an app that does that.