How to edit a FIT file swimming activity?

I am trying to edit a FIT file (removing a few latest wrong laps during a swimming workout that mess up a lot with the final total distance).

I was planning to use the Python SDK for the job, but it seems to only read FIT files without being able to save FIT files (see https://forums.garmin.com/developer/fit-sdk/f/discussion/324760/add-create-fit-file-capability-to-fit-python-sdk for a discussion on this topic).

I finally gave a shot to `FitCSVTool.jar` (see https://developer.garmin.com/fit/fitcsvtool/commandline/) and I have been able to correctly convert FIT to CSV, but I cannot convert back to FIT from the generated CSV (even without any edits of the CSV file).

The generated FIT file is created with no errors, but the upload on Garmin Connect fails.

I tried using the `-u` argument with no success.

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1) Can someone provide guidance how to correctly use `FitCSVTool.jar` to convert FIT -> CSV -> FIT while being able to upload on Garmin Connect.

2) Even better would be able to save FIT file from Python, so any timeline on this topic if relevant would be nice :-)

0 7803829 2 months ago

I already tried the various Python packages out there, but none of them do the job as far as I see.

0 seilogramp 2 months ago in reply to 7803829

If you're just trying to fix laps, you can try using Swimming Watch Data Editor (swimmingwatchtools.com)

0 7803829 2 months ago in reply to seilogramp

Thank you! I already tried that one and the resulting FIT file does not work when uploading to Garmin Connect :-(

0 seilogramp 2 months ago in reply to 7803829

In that case if you zip and attach the fit file to this thread, we can take a look to see if it is repairable.

Zip the file, then in a reply post Insert >> Image/video/file >> click Upload >> browse for file >> OK.
Or upload the fit file to a reputable file sharing service, such as OneDrive, Google Drive, Dropbox, make the file public, then paste a link to the file in your post.

0 7803829 2 months ago in reply to seilogramp

Thank you.

That being said, in case it happens again, I would also like to be able to do that myself. Either using The CSV Java tool or using Python (either SDK or API).

17002275255.zip

0 7803829 2 months ago in reply to seilogramp

Actually, I tried https://www.swimmingwatchtools.com/editor again, and I cannot delete the faulty lap using the barplot chart since those have a distance of 0, I cannot select them.