Does the SRT file record the bearing of the drone at any given time? I need to know exactly what direction the drone is facing during the shoot to see if I have a line of sight to a distant object which is not visible.

You didnt say what drone you have but this is an example from a Mini 3 Pro,   no compass data sadly.

SrtCnt : 3, DiffTime : 34ms
2023-10-29 06:43:41.077
[iso : 410] [shutter : 1/30.0] [fnum : 170] [ev : 0] [ct : 5902] [color_md : default] [focal_len : 240] [dzoom_ratio: 10000, delta:0],[latitude: 51.542825] [longitude: 0.548302] [rel_alt: 28.200 abs_alt: 246.691]