are you sure it was live stream I do not have one of these boxes but do they not switch to iptv if stream not availableAs I said I used both FAT 32 and NTFS and it still made multiple files, not sure how big but I think they were smaller than 4GB, which I would have expected when it was done as FAT 32 but as long as the stick was big enough then it would just continue to make additional files.