Not sure you have seen my reply on the initial question? Direct access to HERO3 SD cards is limited as it is not reliable. This is a HERO3 firmware limitation which has improved for the HERO4. This is the reason I have disabled access for HERO3s by default. It is available for HERO4 cams and can be...

I use my GoPro 3 to record external videos. After copying the videos over (as MP4), I import them with iPhoto. Once it's part of my iPhoto library, I then turn on iTunes to sync up the photo library (folder points to iPhoto). On the phone I'm able to spot the video in the Photo Library but it is NO...