I plugged in my GoPro Hero 4 Session and it seems to confuse libgphoto2 rather badly. Not videos are shown, and the folder names are not stable.

> $ /usr/bin/gphoto2  --list-files 
> There is no file in folder '/'.                                                
> There is 1 file in folder '/store_00010001'.
> #1     Get_started_with_GoPro.URL r-     1 KB text/html
> There is no file in folder '/store_00010001/DCIM'.
> There is no file in folder '/store_00010001/DCIM_00000001'.

> $ /usr/bin/gphoto2  --list-folders
> There is 1 folder in folder '/'.                                               
>  - store_00010001
> There are 2 folders in folder '/store_00010001'.
>  - DCIM_00000001
>  - DCIM_00000001_00000001
> There are 0 folders in folder '/store_00010001/DCIM_00000001'.
> There is 1 folder in folder '/store_00010001/DCIM_00000001_00000001'.
>  - 100GOPRO
> There are 0 folders in folder '/store_00010001/DCIM_00000001_00000001/100GOPRO'.

However libmtp finds the files:

> $ ./examples/mtp-files
> libmtp version: 1.1.11
> 
> Device 0 (VID=2672 and PID=000f) is a GoPro HERO4 Session.
> mtp-files: Successfully connected
> Listing File Information on Device with name: (NULL)
> File ID: 1638403
>    Filename: GOPR0003.MP4
>    File size 13689131 (0x0000000000D0E12B) bytes
>    Parent ID: 100
>    Storage ID: 0x00010001
>    Filetype: Apple Quicktime container format
> File ID: 1638404
>    Filename: GOPR0004.MP4
>    File size 42119659 (0x000000000282B1EB) bytes
>    Parent ID: 100
>    Storage ID: 0x00010001
>    Filetype: Apple Quicktime container format
> File ID: 4026531841
>    Filename: Get_started_with_GoPro.URL
>    File size 137 (0x0000000000000089) bytes
>    Parent ID: 0
>    Storage ID: 0x00010001
>    Filetype: HTML file
> File ID: 1638403
>    Filename: GOPR0003.MP4
>    File size 13689131 (0x0000000000D0E12B) bytes
>    Parent ID: 100
>    Storage ID: 0x00010001
>    Filetype: Apple Quicktime container format
> File ID: 1638404
>    Filename: GOPR0004.MP4
>    File size 42119659 (0x000000000282B1EB) bytes
>    Parent ID: 100
>    Storage ID: 0x00010001
>    Filetype: Apple Quicktime container format
> File ID: 1638403
>    Filename: GOPR0003.MP4
>    File size 13689131 (0x0000000000D0E12B) bytes
>    Parent ID: 100
>    Storage ID: 0x00010001
>    Filetype: Apple Quicktime container format
> File ID: 1638404
>    Filename: GOPR0004.MP4
>    File size 42119659 (0x000000000282B1EB) bytes
>    Parent ID: 100
>    Storage ID: 0x00010001
>    Filetype: Apple Quicktime container format
> OK.

(Note that this is libmtp master as the version in Fedora 23 doesn't find GoPro devices.)