I bought a Samsung HDTV:
UN46F6300AFXZA Samsung HDTV - 46" Class (45-9/10" Diag.) - LED - 1080p - 120Hz - Smart TV
I have discovered the following solution (which probably works for all Samsung Smart TVs):
1) Set the TV into "Store mode"
2) Turn off the E-POP (so I don't have the demo menus showing on the screen)
3) Set source to USB and turn on "REPEAT ALL"
4) Put a file called "DEMO_LED.tp" on a USB flash drive (aka, thumb drive, stick drive)
5) Plug the flash drive into USB port #1
6) Power the TV off and back on.
Then the TV will show the DEMO_LED.tp video continually.

My question is:
What is the best (and least cost) software to create the .tp file from a number of videos and/or jpeg files?
NOTE: I'm told that a .ts file could be created and renamed to .tp, but I haven't tested that theory.
Any suggestions are appreciated!