Old Xbox transcoding

Hi, I have an old Xbox with XBMC. It work fine, but don't permitted to see the MKV file.
The old xbox work with mpg and mpeg4 file but with standard resolution.
I try to transcode the mkv in mpg2 with sd resolution but don't work.
tanks for help

now i use this profile

  Code:

<Profile id="Custom" name="My XMBC Profile" extendsProfileId="1">
   <Transcoding>
      <!-- Transcode everything  to ensure low bit rate -->
      <Video targetContainer="mpegts" targetVCodec="mpeg2video" maxVBitrate="4000" forceVTranscoding=“true” maxHeight=“360”targetACodec=“mp3" >
         <Matches container="*" />
      </Video>
   </Transcoding>
</Profile>