I was flying today one flight for a total of about 11min(battery at nice 55% upon landing!) . I shoot at 4k/24/mov, 60mbit. When looking at the files on the SD card (SanDisk ultra xc class 10 64gb) I noticed the video is split into two files. First one is about 4gig - 9min 30 sec and the other consecutive file is a 1.5min file,immediatly beginning where the one before it ends. Is this normal? Is there a 4gb file size limit? Thanks!