I'm looking to get the new Sony Z2 or Samsung S5 for the 4k capability and am wondering if I'm going to run into any issues recording videos of longer length. I would figure they would solve those issues by now with video that advanced but I am having my doubts.
I have read that DSLRs have a max video length of 30 min for various reasons, but do cell phones have a similar max video recording time? If I buy a 64 gb microSD card and record HD, will it cut off at an hour or at the battery/memory full markers?