I have downloaded a few files to my thumb drive to test my Atmos setup. My TCL 75Q825 recognizes the thumb drive (FAT32) but not the files. They are all .mkv files. I've tried ExFAT as per suggestions I read but the TV doesn't even recognize that format. Any help would be greatly appreciated.
Update: I ditched the thumb drive since my TCL tv can recognize my Seagate external drive. However the Atmos demo files I downloaded from TheDigitalTrailer.com are not playing in Atmos. I have the drive connected to the USB port of my TCL TV then ARC to my Onkyo Tx-SR494. Some play in DD 5.1 and some have no sound at all. I guess its possible those files aren't really lossless Atmos as per the website. I can see my drone vids as well as photos just fine.