@jirycz - yeah. I thought that might be the case.
To rectify, try changing the line (in the Panasonic 2013 profile):
<Video targetContainer="mpegts" targetVCodec="mpeg2video" targetACodec="ac3" aBitrate="384">
(just above the 3 lines strating
<Matches container="avi") to
<Video targetContainer="mpegts" targetVCodec="mpeg2video" DAR="16:9" targetACodec="ac3" aBitrate="384">
These videos (ie. DivX) will still be transcoded to mpeg2 (we have to as your TV doesn't support divX) but this should fix the aspect ratio. I am however concerned as to what this will do with a DivX file with an aspect ratio of 4:3. If you have one (typically an old TV show) can you also test that and let me know.
There is also another option you could try (I haven't) which is to change the fourCC header to try and fool the TV that it is an XVid file rather than DivX. Use the AVI FourCC Code Changer tool from
http://wiki.serviio.org/doku.php?id=avi4cc to change the fourCC code to XVid (you may wish to try this before making the profile changes above). If it works your DivX files will be seen as XVid and will play natively on the TV, which is always better than transcoding.
@kendublin - I don't believe your issue is profile related - I still believe your TV should support these files natively (the profile is not transcoding these files, simply allowing them to stream natively). I am wondering if this is a case of it being a "bad" mpeg encode (by "bad" I mean something that your TV doesn't like). You could try remuxing these files to a new container and seeing if that helps. Remuxing is a fast process (nearly as fast as a simple file copy) with no degradation of the video or audio.
To remux the file from a command prompt type:
ffmpeg.exe -i "/Volumes/Lemuel 2TB/Movies/Big.mpeg" -c copy -map 0 -f mpegts "/Volumes/Lemuel 2TB/Movies/Big2.mpeg"
and see whether the new file "Big2.mpeg" plays (I have also rewrapped to an mpeg2-ts container as you mentioned that these work). Give it a go and let me know, also note any errors as these may provide a hint.
FYI - just because the file plays on USB doesn't mean it will be supported over DLNA. Panasonics seem to use two distinct systems for some reason - it tends to true that if a file doesn't play on USB then it won't over DLNA, but if it does play over USB you cannot draw any conclusion one way or the other (if that makes sense).