RTSP DataSource

[lefish]

hello, all, i have wrote a DATASource for RTSP stream, but it doesn't work well on video and audio.
Anybody can help me? here is my code:

package com.omnividea.media.protocol.rtsp;

import javax.media.MediaLocator;
import javax.media.protocol.Positionable;

public class DataSource extends com.omnividea.media.protocol.DataSource
        implements Positionable {
    private String urlString = "";

    public DataSource() {
        super();
    }

    public DataSource(MediaLocator ml) {
        super(ml);
        setLocator(ml);
    }

    public void setLocator(MediaLocator ml) {
        super.setLocator(ml);
        try {
            urlString = ml.toString(); // Old version
            System.out.println("RTSP source: " + urlString);
        } catch (Exception e) {
            System.out.println("Bad URL: " + ml);
        }
    }

    public String getUrlName() {
        return urlString;
    }

}

Thanks, all

[lefish]

the video and audio are very jerky?
I tried to change buffer length, but no effect.

        BufferControl bc = (BufferControl) proc
                .getControl("javax.media.control.BufferControl");
        if (bc != null) {
            bc.setBufferLength(BufferControl.MAX_VALUE);
            bc.setMinimumThreshold(10000);

        }
Regards,
lefish