When recording long videos it is normal for file system on the card to split files in smaller segments. In my case an ExFat file system splitting long recordings into 4.21GB segments. No problems here. But ... When you place these 2 files on an editing timeline the ending frame of the 1st segment SHOULD be the previous frame of the 1st frame on the second clip .. BUT THEY ARE NOT! Screwing up all recordings over the 4GB limit!! WTF!! My GoPro H3 does not do this.. segments ALWAYS match up frame perfect. This is one for a new f/w update.