Xbox 360 and mpegts

[preacher65]

I'm having a few problems understanding how Mezzmo decides how to transcode files to my Xbox 360, and how I can change that behaviour. It seems to choose mpegts as its default, which plays fine, but doesn't allow fast forward or rewind. I understand this to be because the Xbox is sending a request for the start of the file, instead of the current playback position. I can workaround this by pre-transcoding to mp4.

My question is, how do I get Mezzmo to choose mp4 as its default instead of mpegts? Can I set it to transcode to mp4 on the fly? I assume this is something in the profile file for the Xbox, but I couldn't work out how to tweak it.

And also, I guess, why is mpegts the default when it doesn't support rewind etc., rather than mp4 which does support it? Is it because mpegts is faster than mp4, and some PCs might not be able to transcode to mp4 fast enough for on the fly transcoding? Just curious!

Many thanks.