+
+ You have to configure filters manually if you want to use
+ the amp filter or the compress filter which are not activated
+ by default.
+
+ Playing udp streams also requires manual filter configuration
+ because the output of the udp receiver must be fed into the
+ fecdec filter first to produce a stream which can be decoded
+ by the appropriate decoder (mp3dec, oggdec, aacdec). In other
+ words, the fecdec filter must be specified as the first filter
+ of the filter chain for any udp stream.