Originally posted by Steve.Ledger The limit is 4Gb file sizes (FAT32 restriction with SDHC cards). At highest quality setting 4Gb is reached in about 16 minutes.
I'm sure it would be trivial to seamlessly join clips.
For audio, I'd opt for a high quality external recorder like a Zoom H2n then sync in post. Again, this is quite easy to do.
I don't think there is a 3.15Gb FAT32 limit on SD cards that are formatted in camera, they use a DCIM (Digital Camera Image Management) file to keep a record of where in the memory map each image or video begins and ends. No camera uses a FAT32 (or FAT 64 for that matter) file system or every camera would be limited to 3.15Gb of addressable memory (note 3.15GB is the FAT32 limit - not 4Gb). There was an issue of not being able to write over a page of memory and continuing in the next page on some cameras, not sure about the K-01, this issue has been sorted for a number of years. SD cards have pages of memory with 1Gb, 2Gb or a maximum of 4Gb pages depending on card memory size. This is one reason why you must format the card in camera, never on a computer. Formatting in camera simply replaces the DCIM file with a new empty one, it doesn't erase any images, they just become invisible to the camera and are simply overwritten by subsequent images or videos, which is why image recovery software works they just detect the separate images or videos and re-write a DCIM file within the software.
The 29 minute 59 seconds limit is a copyright licensing agreement issue imposed by the film industry, mainly Sony, to stop people going to a movie and recording it, and can be removed with a hack on Panasonic GH2 cameras. The GH2 is the only interchangeable lens camera I know of where video is the primary function, other than some high end dedicated camcorders of course.
Chris