I keep a very organized archive of my photos and videos. Most of those files originate from mobile devices and various sources all have their own file naming syntax.

E.g.

• Most camera apps: IMG_20190615_163707.jpg and VID_20190615_163707.mp4
• Pixel camera: PXL_20190615_143707000.jpg and PXL_20190615_143707234.mp4 (Note: Uses UTC...)
• Whatsapp: IMG-20190615-WA0001.jpg and VID-20190615-WA0002.mp4
• Threema: threema-20190615-163707.jpg and threema-20190615-163707.mp4
  • and: image-20191506-163707234.jpg (some other device, note the month and day are switched)

On Windows I use RegexRenamer a lot: http://regexrenamer.sourceforge.net/

Here is my Regex to rename all of the above to a somewhat suitable naming in one go:

• Search: ^(?:(?:IMG|VID|PXL|threema)[_-])?([0-9]{4})([0-9]{2})([0-9]{2})[_-]?(WA|[0-9]{2})([0-9]{2})([0-9]{2})?
• Replace: $1.$2.$3 $4-$5-$6