This tool is exactly the same as Burn-In Time Stamp, except that it allows you to provide a completely new date and time to be stamped.
The Burn-in Time Stamp tool extracts the recording date and time that was stored by the camera when the video file was originally recorded. Sometimes the camera's internal clock was set to an incorrect time when the recording was made, but you can "correct" this when time stamping by using the Adjust Date and Time by setting to adjust the time forward or backward by a set amount.
But what if you have a camera model that does not store date and time information at all ?
Burn-in New Time Stamp to the rescue! This lets you choose your own date and time to be stamped onto the video file - whether the camera's clock was set incorrectly or even if the camera did not store any date and time information at all.
When you select Tools > Burn-in New Time Stamp a date and time selection dialog appears. Use the controls to choose the start date and time that you want to correspond to the beginning of the input video file. Then click OK. The rest of the procedure is exactly the same as the Burn-In Time Stamp tool.
If you have set Mark In and Mark Out points because you only want to time stamp a small section of the video file, you can select Mark In location, and your chosen start date and time will correspond to the Mark In point (i.e. the beginning of the output stamped file) instead the beginning of the input file.
You will probably want to choose a different date and time for each video file separately, so the Burn In New Time Stamp tool is only available from the Tools menu - it is not currently available in Batch Processing.