The latest profile works for AVI and MP4, but now the mts files don't even show up in the file list on the Bravia. Folders they are in appear empty. I sent Dennis another email about that for him to try again.

However, I am looking again at the profiles and maybe someone could describe in general terms the layout and key sections of the profile?

There is a section at the start called the "device" section, what are the key parts of that and role in the profile? I see a "waitbeforestreaming" item that in some profiles is 6000 and others is 2000 (I think in milliseconds). Does that item explain why some profiles seem to take so long to start streaming and other not?

Next is the "descriptiondeliveryrules" section. What are the key parameters in that section?

The rest appears to be the actual containers, with many parameter options there.