I'm currently trying to automate the annotation process for some camera trap videos by extracting metadata from the files (mp4 format). I've been tasked to try and automatically extract the ambient temperature and moon phase that are shown on the videos and I've tried several tools (the automatic metadata field mapping in Timelapse and the commandline exiftools with the extract embedded option --ee as well) but sadly no success yet, so I've decided to tap into some community wisdom for help. :)
Are there any other tools that I could try out with the videos or some other place I could check in case the tags are stored in a different way? I'm relatively new to camera trap files, but I assume if the data is shown on the video, then it must've been stored somewhere. I'm not sure where to look, so any help would be really appreciated!
Of course, it's always possible that the data is just not there and there's no easy way to extract it (I've read in a stackoverflow thread somewhere that mp4 tends to lose some metadata, or maybe the camera trap itself might not have been set up to store that information as metadata too).
The option to build (or reuse?) a CV model that reads the temperature text and moon phase symbol from the videos is possible to do as a last resort, but if a more painless and time efficient way exists, it would definitely be the preferred approach here.
Thanks for the help in advance!