I found there is another way to get these times using ffprobe that is already included with Shotcut from this GitHub Issue
I just tested it with my Hero 11 Mini, and it worked for me:
$ ffprobe -v error -show_chapters -of default=noprint_wrappers=1:nokey=1 -sexagesimal -select_streams v:0 -show_entries chapter=start_time -of csv=p=0 GX010071.MP4
0:00:14.197000
0:00:27.827000
0:00:53.136000
It also works with the .LRV proxy.
The time values it outputs are similar to Settings > Time Format > Clock menu option. But even if you do not have or use that, you can still manually copy and paste the times into Shotcut Timeline Markers for a workflow like:
- Add video file to the beginning of a track
- Run
ffprobecommand (See Export at the Command Line for how to use bundled command line utilities.) - Copy a time
- Click Shotcut’s timecode display below the player, or switch to Shotcut and press Ctrl+T
- Press Ctrl+V to paste and Tab to seek and clear focus
- Press M to add a marker
Tip: Learn to trim directly on the timeline using shortcuts including variations to ripple shown in Timeline > menu > Edit.
P.S. Yes, it might be good to integrate this feature somehow, but that should actually create clip markers instead of timeline markers, and Shotcut does not yet have clip markers. Shotcut already has File > Export > Markers as Chapters; so, it should probably add a feature to import a chapter text file to timeline markers. However, even that is not a great fit. A quick feature addition is Properties > menu > Get Chapters that runs ffprobe in the background as job. When done, the job in Jobs shows these times in a text dialog like we use for various job functions.