Thomas Smet
Veteran
Both free and paid Fusion can load all flavors of GH5/s files. Install the FFMPEG loader component and you're off to the races.
Dig deep through this thread for details...
https://forum.blackmagicdesign.com/viewtopic.php?f=22&t=62308
And this video was somewhat helpful when I did the process...
https://www.youtube.com/watch?v=G76Q_Gb7CUQ
Apparently not as easy on a Mac.