AD1997 :
samsung and nothing written on manual and when connect smartphones via usb wire it only shows pics no media
Samsung TV? What model? You need to look up your model specs online and see what it can play off USB. It may need the files in a specific area. Try moving the files to a regular USB stick, see if it seems the videos then. Also keep in mind that if the items are protected, it may not play over USB, you would need to play it on the tablet and use a video cable to connect it to the TV for the image on the TV.