Most photo-cameras use FAT for SD cards so I expect journaling is not that common. Don't know if the same applies to 'professional' video-cameras though.
My DVR uses FAT32 on a 1TB disk. Each recording has a meta entry that holds a list of files that make up that recording. As far as I can tell, as it records, it closes a file that is approaching 4GB, opens a new one to continue recording, and updates the meta entry by adding the new file name to the list.
The DVR is consumer grade, but this method is simple to implement. I guess my point is that it is a solved problem to use FAT with large files.
