Quicktime plays when external monitor is connected

[cellocello]

OK, this is a bit of a weird one.

Recently, my quicktime (with Perian installed) stopped playing AVI files - giving me the whole 'The movie is in a format Quicktime doesn't understand' business.

This made no sense to me as AVIs were playing fine previously. Nothing I did could fix the problem.

HOWEVER, just today I plugged in an external monitor to test something out; lo and behold, quicktime is playing AVI files just fine again!

What's going on?! Has anyone seen this behaviour before?

 

[Fa7mac]

Your computer is problably crazy!
Interesting phenomena though. Try to see if Quicktime is on your main computer screen or if it is on your monitor screen. If it is on your monitor maybe it is been playing all along and you couldn't see it because your monitor was turned off.
Or your computer is just crazy

 

[cellocello]

hah, I hope not!

No one else has experienced this, eh?

Has anyone had any experience with Perian flaking in and out of use?