Release DJI video timed metadata (`djmd` track) `.proto` files

[mifi]

Hi. I'm the developer of https://github.com/mifi/lossless-cut and I'm trying to add support for parsing metadata from DJI drone recorded video files (djmd MP4 track), which as I understand it is based on Google Protocol Buffer. I see you have released a whitepaper with a sample .proto file, however that file does not adhere to the data coming from my drone DJI Air 3. Could you please release the proto files for all of your drones so that the community can parse the data in the recorded MP4 files? Thanks!

[leidix]

+1

[Cacsjep]

@mifi did you have some data or more infos i would like to ingegrate this metadata into vms i have found this https://exiftool.org/TagNames/DJI.html

[mifi]

I did some testing with exiftool and found that its code doesn't even use the .proto files. And the exiftool code does not work with my drone, so I've concluded that it's also out of date. Really hard to reverse engineer all these different drone protocols when there are so many different drone models all with different protocols. If DJI were to release the official proto files, it would be a breeze to parse the metadata.

[Cacsjep]

@mifi thanks for the replay, yeah i notice that. in my case I want to extract the timed metadata from h264 SEI when using the RTMP stream. Very sad that this is not public information. I think they would force you to there cloud todo such things or so.