You could also use MediaEncoder, especially to make say a ProRes or Cineform transcode which as an intrframe codec, would play back ever so much easier within your system.

You will be able to copy files from the camera but not delete them. There are online files and the help for Handbrake that do cover the process. But also, if you connect a GoPro to a computer (Windows, dont know about Mac or Linux) via USB, it will be mounted as a MTP device, not a mass storage device. Handbrake can do that to an easier to process form of H.264, and you missed the capability of that app to batch process, which it does do. So often, to get good playback it's useful to transcode to an intraframe codec, or at least to a long-GOP format with less extreme use of things like partial i-frames and long picture 'groups'. There are now some things in certain AMD CPUs also that I think help with this. Now, simply copy and paste all the pictures/videos to any preferred folder on your PC. Some Intel CPUs have 'QuickSync' which helps with that. Most computers do not of course have that particular chip to de-encode the media.

It uses a special chip in the camera to do the encoding. depending on your CPU/RAM/GPU, it may or may not play them back smoothly due to the extreme compression options used by those cameras to get the data 'smallified' rapidly. GoPro did claim they are releasing new desktop software this year. Click the icon in the below screenshot that is marked out with a red square and click Video. DaVinci Resolve is free professional video editing software that you can use. Launch MiniTool Video Converter and click the Add or Drag files here to start conversion area to upload your GoPro HEVC video footage. Use an SD card reader to transfer your files to your mac and avoid using image capture until Apple fixes this issue. First, Premiere Pro can import the GoPro files. So the files image capture copies are now only partial corrupt files that wont play.

How to copy gopro files to mac