My research so far has brought the following to light:
The above command works in that it writes the corrected compass values to the json files.
These values are also transferred to the mapillary map.
However, the Exif values (direction) of the photos are not overwritten. Only if the value for the view direction was empty, the Mapillarytools writes the correct value into the Exif field.
I had always checked the result of the Mapillary tools with Geosetter. Thus, I thought the images processed by Mapillary tools were wrong in terms of compass values/viewing direction and thus not suitable for Mapillary map.
So the problem with the Exif data is not solved, but I am still satisfied, because I have correct values for the viewing direction of the images in the map.
Nevertheless, if someone has an idea how to write correct values into the Exif field, I would like to try this idea.
The command I used:
python mapillary_tools process --advanced --import_path c:/m --user_name sonyboya6t --overwrite_EXIF_direction_tag --keep_duplicates --interpolate_directions
Inspiration from
http://mapillary.trydiscourse.com/t/mapillary-tools-not-working/3090/2