This concerns my Canon G1-X
I rarely shoot video and that capability is not of major importance to me...but I did note that since it formats the memory card as Fat32 there is a 4 gig files size limit.
I did an experiment and pre-formatted the card as exFAT which has no 4 gig limit and the camera was able to use it just fine.
This morning I dashed off a email to Canon tech support mentioning that... and just a few minutes ago got a /real/ reply!
For them to respond in a non-robotic way on a weekend was quite impressive. I was told their Japan headquarters made the FAT32 decision and wanted to know more about my experience with exFAT and the camera.