Model - 4670X - Roku Ultra
Serial number - YJ003D636500
Device ID - KW9993636500
Software version - 10.0.0 - build 4185-46
I have ripped several dvd's into mp4's and have them on a 4 TB Western Digital My Passport, portable drive. I have the drive plugged into the Roku's usb port. I have watched many movies this way using the Roku Media Player channel/app (current Version 5.5 build 9) and have never had a play back issue. I have plugged the drive into my PC and the mp4 content plays fine. Now when I play any of the mp4 files on the Roku the sound is a 4 click constant repeating rhythm, similar to what an old movie reel would sound like. The video is fine.
Thanks for your assistance