A warm welcome to pets.ca
Just so that you know, there's a specific cat health area right here http://www.pets.ca/forum/forumdisplay.php?f=75
If this began happening with one of mine, I'd be speaking with my Vet and asking that, if she has no personal experience with this, that she "ask around" - whether that be with a specialist or through her network of contacts...a video would certainly help. I would not want to start a "guessing game" or any series of diagnostics at the outset.
I'd also be monitoring things closely for any changes in frequency/intensity etc.
Keep us posted.