First, thanks to all of you to all the helpful advice on the forum. Unfortunately I have run into an issue that I can not seem to find the solution for and I am asking for your help. I have some MKV files that I want to convert to AVCHD so I can watch them on my BluRay player (Sony BDP-S350). I convert the MKV file using the tsmuxerGUI program (I make sure the video profile level is 4.1 and select "Create BluRay disc"). I then copy the BDMP and CERTIFICATE folders to a DVD+R DL using imgBurn (using UDF 2.5). When I put the disc in my player it recognizes it and plays except the video looks like a split screen. The audio is perfect and the video is in sync, it is just this "spilt screen" issue. It is difficult to describe in words so I attached two photos. This has happened to me with two different MKV files so I am wondering if it is a setting issue. Has anyone ever seen this issue or have successfully played converted MKV files on the Sony BDP-S350? If so, what settings did you use when you muxed it? Thanks in advance for your help.