Audio silent on some chapters after build?

I've looked through the forum and can't find an answer to this.
I have authored and built a dual layer DVD, but past a certain point the audio stops playing on all tracks when playing a burnt disk in a DVD player, and in apple dvd player when playing the dvd from a video_ts folder. All the audio plays correctly in the simulator.
at the moment all the video is one track (over four hours), using multiple stories to play different sections (reason I've dont it this way is I want a playall that allows the user to step through every thing on the disk chapter by chapter)
all audio is encoded the same, ac3 48 khz, 192 VBR, 16 bit (default for audio). However the video bitrate average and max is varying for each chapter (its lots of video clips layed into one track).
any ideas? all I can think of is re encoding all the audio again on one computer or breaking the project up into multiple tracks and trying to use scripting to provide the play all functionality I want.
forgot to add, I know about compatibility problems with video bit rate too high. nothing has a higher bitrate than the "dvd best quality 90 minutes" standard preset (avg 6.2 max 7.7), most of the video has the bitrate lowered to 5.0 avg or 3.7mps avg.

The audio needs to be that same rate, video clips do not have to be the same rate
If you are able to make tracks shorter than 3 hours 15 minutes it seems to help on the Apple DVD Player side of things (no MPEG blocking/corruption/audio dropouts), as to why it is not working properly on a DVD Player (standalone) I am not sure, perhaps the bug carried over to the builds.
Couple of things to check - what type of media did you use? Also check the audio to make sure things were not panned too much one way or the other and some players, such as Sony's, have faux "surround sound" which does strange things to audio, including drop outs (same for cycling through certain audio settings on players, some of them behave poorly.)
Lastly (and it is VERY strange) I have seen bad cables cause issues where audio drop out (and/or MPEG corruption) on certain parts of DVDs while other DVDs did not have the issue and changing the cables, resetting connections helped.

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Some audio out of sync in after Export

Can using the built in Audio tools like Loudness, or adjusting the sound levels in the waveform cause the audio to go out of sync?
I'd say not...but that is what seems to be happening.
I have a 2hr 30 projet for a DVD.
All individual clips captured on Canon 5d 3 at 48khz 25fps
Project is 48khz 25fp, as set automatically when the clips were first dropped on the timeline
One particular group of 3 clips, seems to randomly and suddenly loose sync in the middle, sometimes at the start, some times in the centre, then often it comes back at the end.
Of the whole 2 hr 30 project only this bit is giving issues, all other clips have been edited in the same way, and are similar lengths,some longer, some shorter, all stay in sync. Max clip length about 8 minutes
In the timeline the audio stays perfectly in sync
I have re made the sequence of three clips , totalling 24 minutes long, probably 6 times now. and each time after adjusting the audio levels the exported audio has variable sync,
Also re imported the footage and tried again
No added audio tracks, just a single compound clip containing three complete clips, with the ends trimmed
Audio has not bee detached from the video.
All I am doing is adjusting the audio levels,
Hum On
Noise reduction to about 2%
Loudness On :
Amount 20%
Uniformity 15%
First noticed this yesterday on a DVD burnt using "Send To Compressor" Create DVD
Also happens using the in built Share, to DVD, ot share To master File
Output settings are also 48khz and 25fps
If I do an export of the clip With no audio corrections, it is fine. But as son as I try and adjust the audio levels, it goes out of sync.
I'd half suspected I had somehow dragged the audio in the timeline, when adjusting the levels, but no. Go back and play the clip in the timeline and it is perfect. But Share that compound by dropping in to a New project, export as master and Playback in QT and the audio goes out of sync after I have done a levels correction. Un-corrected ( for level only ) audio stays in sync.
o master file that single co

How are you exporting? The first quicktime export option or quicktime conversion? What are your settings for the export?
Did you capture with device control with abort capture on dropped frames and create new clip on timecode break enabled?

Audio player with some extra's - can't get player realized

I try to build an audio player with some extra's like looping between 2 time marks.
Till now i have an interface that can play back audio files but after that the problems start.
There is no way i can add functions without creating a {color:#ff0000}NotRealizedError{color}.
According to the documentation the start() method should realize (etc) the player, but it doesn't in my program and neighter does the method player.realize();.
Can someone give me a hint to get me on the road again.
Thanks in advance.
Here is the complete code which generates the NotRealizedError on the dp.setRate(); method:
(most of it is older source from a basic player on the internet).
package dictaplayer;
import java.awt.*;*
*import java.awt.event.*;
import java.io.*;*
*import java.net.MalformedURLException;*
*import java.net.URI;*
*import java.net.URL;*
*import javax.swing.*;
import javax.media.*;
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private Player dp;
private URI uri;
private URL url;
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openFile();
createPlayer();
getContentPane().add( openFile, BorderLayout.NORTH );
setSize( 300, 300 );
setVisible(true);
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File file = null;
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fileChooser.setFileSelectionMode(
JFileChooser.FILES_ONLY );
int result = fileChooser.showOpenDialog( this );
// user clicked Cancel button on dialog
if ( result != JFileChooser.CANCEL_OPTION )
file = fileChooser.getSelectedFile();
try {
uri = file.toURI();
} catch (SecurityException e) {
e.printStackTrace();
// Convert the absolute URI to a URL object
try {
url = uri.toURL();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (MalformedURLException e) {
e.printStackTrace();
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if ( url == null )
return;
removePreviousPlayer();
try {
// create a new player and add listener
dp = Manager.createPlayer( url );
// blockingRealize();
dp.addControllerListener( new EventHandler() );
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catch ( Exception e ){
JOptionPane.showMessageDialog( this,
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JOptionPane.ERROR_MESSAGE );
private void removePreviousPlayer()
if ( dp == null )
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c.remove( visual );
if ( control != null )
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int teller = 1;
dp.realize();
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try {
wait(1000);
System.out.println("not realized " +teller);+
+teller++;
} catch (java.lang.InterruptedException e) {
System.exit(1);
public static void main(String args[])
DictaPlayer app = new DictaPlayer();
app.addWindowListener(
new WindowAdapter() {
public void windowClosing( WindowEvent e )
System.exit(0);
// inner class to handler events from media player
private class EventHandler implements ControllerListener {
public void controllerUpdate( ControllerEvent e ) {
if ( e instanceof RealizeCompleteEvent ) {
Container c = getContentPane();
// load Visual and Control components if they exist
Component visualComponent =
dp.getVisualComponent();
if ( visualComponent != null )
c.add( visualComponent, BorderLayout.CENTER );
Component controlsComponent =
dp.getControlPanelComponent();
if (!realized) {
System.out.println("not realized.");
if ( controlsComponent != null )
c.add( controlsComponent, BorderLayout.SOUTH );
c.doLayout();
}

captfoss,
Thank you for your comment.
captfoss wrote:
Start does realize the player, automatically, before it starts it... if it isn't realizing then it also isn't starting.Right, I thought so, but my test was wrong. I now tested it with getState() and I can see it's going from unrealized to realized.
First off, you can only call setRate on a player that is realized but not started... further, any of the calls like configure, realize, start, stop, etc... are non-blocking calls...so you have to wait for them to finish before you go on to the next step.So you say that when the rate is changed (f.i. by a user in a gui) the program first has to bring player in non-started realized mode (stop + realize), call the setRate() and start the player again (on the exact position it was stopped)?
The easiest solution would be to use Manager.createRealizedPlayer rather than Manager.createPlayer...Didn't find out yet why, but when i change this (only this), there is no playing.
Also, ++teller++ is about the most-confused looking code I've ever seen...Just like all the asterisks, i now know that code changes when i toggle between the tabs (rich/plain/preview) in the message box.
Beyond that, your "blocking realize" function doesn't appear to do anything except suggest you have no business coding anything this advanced. Your boolean value "realize" isn't ever changed, so, I'm not entirely sure what the point of that function is other than to wait 10 seconds.I got this somewhere from the internet. Thought it could help me realize the player, but it didn't (obvious) so i commented it out.
Slowly I begin to understand the basics of JMF (at least i think so), but I also understand that there are other (Java) ways to build the application I need. Unfortunatly I have to little (hardly any) knowledge of all those (sound) API's (f.i. JLayer) to find my way through them and to decide which is the best for my use (user controled audio playback (at least WAV and MP3) with looping possiblities between 2 marked positions).
If someone could give me an advise which API (method or whatever you call it) is best to focus on I shurely would appriciate that.

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Voice over level is set to maximum for most part of it. It sounds as it supposed to sound after encoding.
There are several parts of the film that are supposed to be quiet. They are set as quiet on the timeline and do sound quiet during preview playback.
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Audio silent on some chapters after build?

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