code: int open(AVDictionary avDictionary) throws JavaAVException {
  		AVCodecContext avContext = avcodec_alloc_context3(avCodec);
  
  		return open(avDictionary, avContext);
  	}
docs: Initializes the {@code Codec} with a dictionary that may contain specific
  codec parameters.
  
  @param avDictionary dictionary with codec parameters.
  
  @return zero on success, a negative value on error.
  
  @throws JavaAVException if the codec could not be opened.