"Not supported file format" on Samsung UE40C6700

[turtle]

Hi there,

I'm running the trial version 2.1.11 of Mezzmo and I like the software a lot.
Actually it seems to be the only media server that is working correctly with my samsung TV and I would like to buy it. But unfortunaltely I still have some problems with it.
Mezzmo is running propperly on an WHS, connected to an AVM fritzbox with newest firmware. The TV (with Samsung WLAN USB Stick) recognizes Mezzmo as soon as it becomes available and I can browse folder, watch pictures or listen to music on TV without any problem. So far so good.
But when I want to watch movies, for some files (*.avi files - Video-codec MPEG-4 part2) I get the error message "Videocodec not supported" even if the thumbnails on TV are already showing the correct content of the movies.
The strange thing is, that some other files, with same video-codec are played correctly.

- Transcoding is activated
- Samsung C is automatically detected by Mezzmo

Any idea what I can do?
Thanks and best regards
Michael