I'm looking to collect metadata needed for GoPro video to be used in FMV. Video is not shot with a drone (no log info), it is collected on the ground, so how can I collect the metadata needed to use this video in FMV? Can I use the multiplexer tool with GPS data collected from a handheld GPS, biking computer, or smartphone? I know this will have limitations as far as defining the camera orientation, but what is the best way to do this? Also, are there any data loggers that could be used to collect camera orientation as well?