I have a DTT recording gadget that records to USB memory stick as MPEG transport stream (MTS) files. I can plug the USB stick into my Tesco Hudl and MX Player will play these files OK. Unfortunately, for long recordings the DTT recorder splits the recording into a series of files 512MB in size and gives them sequential filenames like this: some_filename.MTS some_filename.MTS1 some_filename.MTS2 and so on. "some_filename" is different for each recording. The sequential naming convention is fixed and can not be changed. The MTS1 and MTS2 files are not identified as video files, but they do play OK if I use ES File Explorer to change their filename to have a .MTS filename extension. But renaming each file before I can play the whole recording is a bit of a nuisance, so I associated .MTS1 and .MTS2 files with MX player and now I can play any of the MTS1/MTS2/MTS3/etc files one at a time. But they still seem not to be identified as video files - ES File Explorer still displays a "?" next to the filename, and the "loop all" option in MX player ignores them. I think there may be another association or setting somewhere that will identify these files as video files. What I'd like to do is just plug the USB stick into my tablet and start playing the MTS file in MX Player so that the "loop all" feature will carry on playing the MTS1, MTS2, MTS3 files in order automatically. I can then sit back and watch the whole recording without having to do anything. Any ideas what else I need to change to get this to work? Or is there a better way of getting the required result?