Quoting from mapillary_tools/README.md at main · mapillary/mapillary_tools · GitHub, the section
Derive image direction and Upload
-
Derive image direction (image heading or camera angle) based on image latitude and longitude. If images are missing direction*, the direction is derived automatically, if direction is present, it will be derived and overwritten only if the flag
--interpolate directionsis specified. -
As with the GoPro9, where the GPS Img Direction entry is lacking in the EXIF-section
Please refer to my sequence of 9 June, where the ways were captured in both directions, yet the fans all point due north.
As an aside, the lacking parts of sequence issue - posted as http://mapillary.trydiscourse.com/t/sequence-taken-5-june-uploaded-few-days-after-still-only-part-visible-on-maps/5297 - is also present here, and on this occasion the pics were uploaded several days ago - hence well after the previous issue was solved, and don’t appear in the OSM iD editor either.