When taking a video recording, the camera will automatically segment into a new file chapter once it has reached approximately 3.78 GB (Black Edition) or 1.99 GB (Silver/White Editions) in size. When put together with editing software these files will play seamlessly as if they were never chaptered. When played back from the camera directly they will also play through as one continuation.
When the camera has the Looping video feature enabled, the files will chapter at 1-minute intervals when Looping is set to 5-minutes, and files will chapter at 15-minutes when Looping is set to any of the other intervals.
This chaptering is intentional and there is no way to keep the camera from doing so. HERO3 cameras divide chapters like this so that in the event of a jolt or crash that causes a file to become corrupted, only a portion of your video will have become corrupted and you won't lose the whole thing incase our file recovery feature is unable to fix the file.