In Windows, how do I find the geotags for videos shot in iOS?
Use exiftool, a command-line tool. GUI available from here.

Relevant feature:


  Reads EXIF, GPS, IPTC, XMP, JFIF, MakerNotes, GeoTIFF, ICC Profile,
  Photoshop IRB, FlashPix, AFCP, ID3 and more.


Should look like this, in readout:


  GPSCoordinates                  : 20.884100° N, 21.319300° E, 17 m
  Above Sea Level