Thanks for the MediaInfo log. Strange, yours shows
Codec ID : qt 2005.03 (qt )
Which agrees with my WIN7 box that produces correctly. I've found on the WIN10 box if I keep video duration very short (~1.3sec) I can at least produce a file to look at, it produces
Codec ID : qt
Rather odd, can't find much info out on 2005.03 but pretty obvious is must be a different qt encoder.
I've uninstalled QT, uninstalled PD14 and reverted back to PD supplied QT which got installed with PD14 reinstallation and still get the plain qt Codec ID and non functional for any resonable duration video.
Jeff