I forgot that I had one piece of equipment that I can "time stamp" videos with. I had bought this over a year ago. I normally do not use it, because to me, it is just too time consuming. However, it is the cheapest way out there to make time-stamped videos from HD camcorders. You just play the video in the Camcorder displaying the date and time when this device is connected between the camcorder and a computer.
You can record the file in an avi file that will have the time and date stamp. This is OK for short recordings, for longer ones it still works, but it only works in real time. So however long the recording is, that is how long it takes (plus set-up time) for you to make the recording.
Here is one such device from Amazon:
I hope this works out for you as it has for me. And