I have just posted this question over at Fred's; and though that seeing a number of colleagues here use the same camera, would post here, too.

This is a little OT, but does anyone know the maximum recording length using the mp4 1440 x 1080/30 codec, please?

This is the relevant quote from dpr:

Full HD & HD: Up to 4 GB or 29 min. 59 sec.
L and M: Up to 4 GB or 1 hour
The only problem is that "L and M" is not defined in the review, or at least I could not see it!

I can say that this odd-ish codec works without transcoding in Final Cut Pro 7, but selecting the same codec in the NEX 6 bodies I have produces a maximum file with a time limit of around 23 minutes. This is because of a max. file size limit of 2.15GB. If the RX100 can use the same codec but make a file of 4GB, a real problem is solved for me.