Several tests later...
So ProRes alpha-ALAC doesn' work because it doesn't really write an alpha channel.
If you export a movie from Moho, render in ProRes PNG-alpha, which cannot be played in Quicktime player, but will import to and work with alpha in Finalcut.
FinalCut no longer has an option to set a default length for imported images (which didn't work anyway).
BUT: you can export a sequence of PNG files from Moho and then do this:
https://support.apple.com/en-gb/guide/q ... 5/mac/13.0 (set correct FPS and choose ProRes)
which gives you a ProRes file with alpha which works everywhere.
Video with alpha on Mac OS for FinalCut - workaround
Moderators: Víctor Paredes, Belgarath, slowtiger
Video with alpha on Mac OS for FinalCut - workaround
AS 9.5 MacPro Quadcore 3GHz 16GB OS 10.6.8 Quicktime 7.6.6
AS 11 MacPro 12core 3GHz 32GB OS 10.11 Quicktime 10.7.3
Moho 13.5 iMac Quadcore 2,9GHz 16GB OS 10.15
Moho 14.1 Mac Mini Plus OS 13.5
AS 11 MacPro 12core 3GHz 32GB OS 10.11 Quicktime 10.7.3
Moho 13.5 iMac Quadcore 2,9GHz 16GB OS 10.15
Moho 14.1 Mac Mini Plus OS 13.5