Help needed to streamline batch exporting.

Hi there and here's the deal...

Have just been on a 2 week shoot with multiple DJI Osmo Action 4 cameras all running time-of-day timecode that were at times running longer than needed.

I need to quickly view and trim down all the camera footage (there's a hell of a lot to go through) to make it more manageable for not only myself, but for another party who will be doing the primary edit of this footage.

I've checked out LosslessCut as a quick and simple app to do this, but although It's really great, it unfortunately has major hiccups handling timecode from the cameras. So much so that it exports the clips with anything from a 13sec to 1+ min shift away from the original camera timecode.

After a lot of 3rd party app experimenting and reading, I've had to come back to Premier Pro to do this, and the only successful way to make sure I can shorten/trim camera footage into small segs and still keep the original timecode and filename, is to...

• drop each recorded cam file on to a PP timeline,
• then slice and dice it to discard and/or keep what I want
• then individually double click on one segment at a time on the timeline of what I want to keep and export
• then right click on the source window and choose... Make Subclip (this has to be done individually for each seg clip on the timeline)
• After doing this along the entire timeline I then can go to the Project window, highlight all the new subclips just made, then right click and... Export Media!

Now this at least retains the original timecode and also the filename, which none of the other ways/methods would completely do, but... it's an incredibly slow and long-winded way to do this!

Please... might there be a better way, or a shortcut to do the same thing???

I'm in your hands now and will be extremely  grateful if there's something easier than this to get the end result I need.  (;->