Show GPS metadata for video files

[dasKeks28]

Since video files can also store GPS coordinates, it would be great if those were also recognized by Photoview, including showing videos on the map.

[kkovaletp]

It could be done by the command exiftool -location:all input.mp4, which will extract GPS data and convert it to human readable format, or by ffmpeg -i input.mp4 -f ffmetadata - - which will output raw metadata of the video and then we need to parse it to find the location.

Taking into account that the geolocation could be stored in different formats, the 2nd command gives more flexibility.

[kkovaletp]

I just double-checked this on my testing instance and see the GPS data for videos in the DB, so the issue is not about extracting the data by scanner job from source files, but to display those videos in UI in the same way as photos.