1. Encode times depend very much on resolution, bitrate and MRQ settings, so without those details it is hard to say whether this is long or not.
2. There is a reason the program is called QuiRcktime. It seems Apple just can't produce a good working version for PC.
this time I encoded using the media encoder so I can see where its struggling: doing a pan and zoom on a high res image is taking a loong time 1 frame every 2 seconds or so. So that must be what the problem was, I wonder why its so hard (maybe its rescaling the 8mp full frame for each frame, rather than working out where the window is and just scaling that portion?)
The previous export failed - when I had it switched to "use previews". It failed at a point on the timeline where I had some footage running backwards. With "use previews" off its made it past that point.
Hmm, and theres a new problem: the sync is out in quicktime (image a few frames before sound).
The same mov plays in-sync in VLC.
High res images are better scaled in PS before using them in PR. If they are not reduced in size to slightly larger than your output dimensions, to allow for some panning and zooming, they will be enormous resource hogs.