TRK file specification available anywhere?

[Roystan]

Hi, I'm interested in developing a small tool that modifies .trk files on the fly to save only the last N seconds, rather than continuously growing (like how OBS's replay buffer functionality works). This way, you can have it constantly running to capture exciting moments, without having to worry about it stopping right before something happens due to the 512mb cap, or ballooning into enormous files if you're using the Great Battles Recorder (I play PWCG, so there are a lot of entities on the map resulting in huge replay files).

 

To do this I'd need the specification for the binary .trk files, so I was wondering if it was available anywhere? Thanks for any help!

 

(Sorry if this isn't the right forum to ask--it's not really a Mod so I didn't think it belonged there.)