Apologies for bothering this list, but I've RTFG'd for some hours and not got 
anywhere.

I'm confused about currently possibilities for rendering compositions outside 
QC itself; and especially when they involve video input.

AFAICT Safari used to render compositions directly; then that was removed.  
When it first worked, it rendered compositions that included video input; but 
at some later stage this was one of several patches that were considered 
security issues, and so compositions that included this were not displayed. 

I can export to QuickTime and open that movie in QuickTime Player, or use 
QuickTime Player to open a composition directly.  When I do either one with a 
composition just containing a flat colour and a video input, I see only the 
flat colour.  As an additional bonus, if I open the composition directly in 
QuickTime Player, without explicitly saving (but I'm running 10.8) the 
composition is now corrupted and can't be opened by QC.
 
QC offers to 'test in runtime', and that works: but I'm too stupid how to 
access this 'runtime' directly.  Is there an app somewhere, or is this an 
indicator that the composition should work in any app coded with a QCview?

Keynote similarly will embed either the composition or the exported movie; and 
in either case, display only the flat colour, not the video input.
 
All I'm trying to do is display a rotated, cropped, video input.  Ideally, I'd 
embed that in a Keynote presentation.  Failing that, I'd like to have the 
simplest possible app that opens the composition in the simplest possible 
window.

What's my best route?  And if along the way you can help me understand more 
about what's going on here, that would also be really helpful.

Thanks in advance,

Ben
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