[Matthew Johns]

Just to say that I’m happily using MPEG Streamclip on High Sierra. I’ve got both Quicktime Player (10.4) and Quicktime Player 7 installed but I couldn’t get Streamclip to open any MPEG2 components until I created an empty ~/Library/Quicktime folder.
I’d previously purchased the MPEG2 components but it won’t reinstall following the upgrade to High Sierra. The system itself is the result of a series of incremental upgrades that started with Snow Leopard; but it’s still working and ripping some old DVD’s that Handbrake and other modern programs were having trouble with.