FULL PRODUCT VERSION :
java version "1.9.0-ea"
Java(TM) SE Runtime Environment (build 1.9.0-ea-b82)
Java HotSpot(TM) 64-Bit Server VM (build 1.9.0-ea-b82)

ADDITIONAL OS VERSION INFORMATION :
ver 6.1 - Windows 7 Professional, Version 6.1 (Build 7601, Service Pack 1)

A DESCRIPTION OF THE PROBLEM :
When a small MP4 video is displayed in WebView, after pushing the play button there is a delay of 30-40 seconds on 1.9.0 before the video starts. On 1.80_66 the delay is 3-4 seconds. This is a serious regression.

REGRESSION. Last worked in version 8u60

ADDITIONAL REGRESSION INFORMATION:
java version "1.8.0_66-ea"
Java(TM) SE Runtime Environment (build 1.8.0_66-ea-b02)
Java HotSpot(TM) 64-Bit Server VM (build 25.66-b02)

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Source provided - after the video poster displays hit the play button and measure the time before the video starts. 30-40 secons was on a Windows 7 64 bit platform but both Apple Mac and Ubuntu show the same problem,

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The video should start in 3-4 seconds or better.

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
public class VideoBug extends Application {
    
    @Override
    public void start(Stage primaryStage) {
        WebView browser = new WebView();
        String newLine= System.getProperty("line.separator");
        String video="<video id=\"video\" controls=\"\" preload=\"none\" mediagroup=\"myVideoGroup\""
                     + "poster=\"http://media.w3.org/2010/05/sintel/poster.png\">" + newLine
                     + "<source id=mp4 src=\"http://media.w3.org/2010/05/sintel/trailer.mp4\" type=\"video/mp4\">" + newLine
                     + "</video>";
        browser.getEngine().loadContent(video);
        Scene scene = new Scene(browser,1024,800);
        primaryStage.setTitle("Video startup delay problem");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}

---------- END SOURCE ----------