I can adjust the date/time in PE10 Organizer for any file. The reason do this is to get photos or videos that were shot with incorrect dates/times to match up correctly in date/time to others. This can happen when you forget to update your camera's time or when on travel. You may also process or convert a video file into another format. This does not preserve the date of the original file.
However, if you update the thumbnails, or simply move files/folders, or upgrade versions/catalogs etc., then the dates changes are not preserved. PE only saves the dates/times adjustments to the external file - modified file date/time. However, it only does this for .jpg (or photos). It does not change the video file date/times.
So why behave differently for photos vs. videos?
I don't know that anyone can tell you why. This is a user-to-user forum. Not a direct line to Adobe.
But I can tell you that you are correct. Video will display the date they were captured.
There is a program called DV Date that will give you more detailed information. It's available as a download elsewhere on the internet.
Most digital photographs imbed 'EXIF' (Exchangeable image file format) data. This conforms to agreed standards and so can be understood by most graphics software. There is no such standard for video data.
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