FAT32 is one of the most popular disk partitions available and supported by large majority of computers, Smart TVs. But as the size of movies are increasing, there will be certain limitations that will be faced.
I was trying to copy a 7GB movie file to a Pen Drive which had FAT32 partition and it failed repeatedly. So I checked the disk partition and it was the nice old FAT32 which is a legency one. Now we use exFAT which supports file sizes of larger sizes -- and when I formatted and used the exFAT disk format, it worked like charm. So always remember that whenever you are facing issues in copying files of large sizes.