My current process with Blackvue camera is like this:
Take the SD card from camera and put into PC.
Upload all MP4-s to server and delete from card.
Set the server to process and upload the videos.
Put card back into camera.
In order to get the geodata from Nextbase as GPX, you probably need to use exiftool or something similar: This thread is probably relevant: https://exiftool.org/forum/index.php?topic=7127.0
It’s also possible to create geotagged JPEG images directly from video, but it’s not as trivial - related topic: Page not found
For processing I use Ubuntu 20.04 Server with no GUI installed. I just set the process to go on separate tmux terminal so it’s available after disconnecting.