I'm pretty confused by this.
First, all files play through TVersity or directly from the PS3 with no problem, no transcoding.
What I have is a DVD library that I'm slowly ripping to mp4 files (Handbrake). They are named .m4v or .mp4 - both work fine in TVersity, and occasionally in PS3 Media Server.
Here's the deal. If I go to play SOME files, it will show (I assume) they need to be transcoded (MPEG-1 versus AVC in the filelist). Trying to play these files fails... (unless I go to the TRANSCODE folder, but that's beside the point). If I change ANYTHING in the filename of these files, they will immediately show up as AVC files and play fine in PS3 Media Server.
Carlton-Browne of the FO.m4v (won't play)
Carlton-Browne of the FO .m4v (will play)
Carlton-Browne of the FO.mp4 (will play)
Carlton-Browne of the FO blahblah.m4v (will play)
Renaming the file back to the original name will render it unplayable again. Sometimes this occurs with .m4v, sometimes with .mp4 - there isn't any level of consistency. PS3 Media Server is running as a service under my account on Vista - Dual 3.2 Xeon. All avi files seem to be fine.