Bad quality

Hi.

I've been playing an mkv (HD h264) film throught " internet mediabrowser", using this setting:
<Quality type="MEDIUM">
<Transcoding>
<Video targetContainer="flv" targetVCodec="flv" targetACodec="mp3" forceStereo="true" aSamplerate="44100" maxVBitrate="2000" maxHeight="576">
<Matches container="*" />
</Video>

It looks pixelated with a low PQ. How could I improve that?

[will]

Increase the bitrate a bit more (maxVBitrate) or use Original. The idea of Medium/Low is to transcode to a lower resolution and bitrate, to save bandwith, but its at the expense of lower quality video.