Ntfs format. The USB flash drive of the wedding video is in ntfs format, and the file system of the USB flash drive is Fat32. The Fat32 format supports a maximum single file of no more than 4G. You can convert the file system format to ntfs format. Choose a USB flash drive around 16G. The photos taken by wedding photography are generally high-definition, most of which are tracked by SLR cameras, and the pixels are relatively high. The size of each photo is about 20 megabytes. Generally, we take more than 50~80 photos, so the stored USB flash drive is relatively large, while the wedding video is in MP4 format, which is about 5g.