Change playback speed with JavaZoom JLayer - java

I am using JLayer sound framework to play wav files with basic functionality (seek,play/pause/stop), I need now to also allow playback speed changes.
Does anyone know if JLayer allows this functionality (I have looked everywhere and I cant find it), and how do I implement it?
If JLayer does not support it how can I implement this?
Can anyone direct me to any source code, documentation or the theoretical aspects behind changing the playback speed?

Related

VLC (J) audio pitch control

I'm currently developing simple video player with VLCJ.
Can anyone please point me some clue about changing audio pitch with it?
is it possible?
I've searching through but cannot find the right keyword, what i need is
some control (method/function) of vlcj (or any) to increase sound so it sounds like
kids voice, or lower down so make like a very old man sound.
Thanks in advance.
NOTE:
still looking on google but found nothing about vlc. what i want is something about the "timbre" as explained at http://www.screamingbee.com/support/morphdoc/MorphDocPitchTimbre.aspx
If you are only interested in playing audio (you don't care about displaying any video at the same time) then vlcj 2.4.0 and later provide a so-called "direct" audio player component.
With this component, your Java application can get direct access to the native audio sample buffer. You can run whatever algorithm you want on those samples, then play out your modified samples via JavaSound or some other API.
There is a sample included in the vlcj distribution that shows how to use this component to play via JavaSound:
https://github.com/caprica/vlcj/tree/vlcj-2.4.1/src/test/java/uk/co/caprica/vlcj/test/directaudio
The example does not show how to change the pitch of the audio, but it does show how to use the direct audio player.

Ogg playback in Java

I have tried many times trying to get ogg support in Java but have been unsuccessful.
I have tried using Jorbis and another method for implementing ogg playback in Java but cannot seem to do so.
Can someone point me in the right direction on implementing ogg in java?
3D sound system is the best I've tried(It just works) and can be used not just in JPCT: http://www.jpct.net/forum2/index.php/topic,1057.0.html
Check out FFsampledSP. It's a free, FFmpeg-based implementation for Win and OSX that implements the javax.sound.sampled interfaces.

Other Ways Besides JMF to Play Media in Java

I am currently using JMF. The reason why I am straying from JMF is the lack of format support. I have looked into FMJ and have not had much luck getting it to run. Recording media is not an issue, I just need a way to display it. My application is swing based. Anyone recommend a library or framework that they have worked with that is good for playing media. Could you tell me about your experience with it?
Thanks
..Recording media is not an issue, I just need a way to display it. ..
Look into the Java Bindings for VideoLAN.
..Could you tell me about your experience with it?
I've not used it. JMF is good enough for my immediate purposes.

Playing multiple sounds and controlling the volume using java

I'm writing an application which plays multiple sounds concurrently, each sound needs to be played at a different volume. Once a sound is playing I never need to change its volume, which may simplify things somewhat. I cannot find a good way to do this.
I can't find a way to play an mp3 sound at a set volume using Java.
The JLayer library seems to have some capabilities for changing the volume, but I cannot find any references or tutorials for this, and the documentation is a little lacking.
Instead of JLayer you could look into JMF. Here is the link http://java.sun.com/javase/technologies/desktop/media/jmf/mp3/download.html
Then it looks like you can control the volume using their media player. http://java.sun.com/javase/technologies/desktop/media/jmf/2.1.1/apidocs/javax/media/bean/playerbean/MediaPlayer.html I hope this helps, I haven't tried it but the links look promising.

Video playback in Java ( JMF, Fobs4JMF, Xuggler, FMJ )

I need simple video playback in Java.
Here are my requirements:
PRODUCTION QUALITY
Open and decode video files whose video and audio codecs can be chosen by me. I.E I can pick well behaving codecs.
Be able to play, pause, seekToFrame OR seekToTime and stop playback. Essentially I wish to be able to play segments of a single video file in a non linear fashion. For example I may want to play the segment 20.3sec to 25.6sec, pause for 10 seconds and then play the segment 340.3sec to 350.5sec, etc.
During playback, video and audio must be in sync.
The video must be displayed in a Swing JComponent.
Must be able to use in a commercial product without having to be open source (I.E. LGPL or Comercial is good)
My research has led me to the following solutions:
Use Java Media Framework + Fobs4JMF
http://fobs.sourceforge.net/f4jmf_first.html
I have implemented a quick prototype and this seems to do what I need. I can play a segment of video using:
player.setStopTime(new Time(end));
player.setMediaTime(new Time(start));
player.start();
While Fobs4JMF seems to work, I feel the quality of the code is poor and the project is no longer active. Does anyone know of any products which use Fobs4JMF?
Write a Flash application which plays a video and use JFlashPlayer to bring it into my Java Swing application
Unlike Java, Flash is brilliant at playing video. I could write a small Flash application with the methods:
open(String videoFile),
play(),
pause(),
seek(int duration),
stop()
Then bring it into Java using JFlashPlayer which can call Flash functions from Java.
What I like about this solution is that video playback in Flash should be rock solid. Has anyone used JFlashPlayer to play video in Java?
Write a simple media player on top of Xuggler
Xuggler is an FFMpeg wrapper for Java which seems to be a quite active and high quality project. However, implementing the simple video playback described in the requirements is not trivial (Seeking in particular) but some of the work has been done in the MediaTools MediaViewer which would be the base upon which to build from.
Use FMJ
I have tried to get FMJ to work but have had no sucess so far.
I would appreciate your opinions on my problem.
Can a brother get a shout out for Xuggler?
In my mind, VLCJ is the way forward for this type of thing. I love Xuggler for encoding / transcoding work, but unfortunately it's just so complicated to do simple playback and solve all the sync issues and suchlike - and it does very much feel like reinventing the wheel doing so.
The only thing with VLCJ is that to get it to work reliably with multiple players I've had to resort to out of process players. The framework wasn't the simplest thing in the world to get in place, but when it's there it works beautifully. I'm currently running 3 out of process players in my app side by side with no problems whatsoever.
The other caveat is that the embedded media player won't work with a swing component, just a heavyweight canvas - but that hasn't proven a problem for me at all. If it does, then you can use the direct media player to get a bufferedimage and display that on whatever you choose, but it will eat into your CPU a bit more (though no more than other players that take this approach.)
JavaFX has a number of working video and audio codecs builtin. It's likely to be the solution with the broadest support at the moment.
I've been using jffmpeg in the same way you use FOBS, it works pretty well, although I haven't compared them.
I would also love to see an easy way to interface with native codecs the way that JavaFX does, but there doesn't seem to be real integration between JavaFX and Java.
There has also been some work trying to get the VLC library libvlc into java. I haven't tried it yet and would be interested to hear back from anyone who has.
haven't tried Xuggler (which i'm interested in) but I'm having a good time with VLCJ. The drawback I find in it is only that you have to have VLC installed prior to your application.
I'd recommend using MPV. You can use it in combination with JavaFX quite easily, see this example.
In short, you use a little JNA magic to use the MPV native libaries directly, and then let the video display on a JavaFX stage. If you use a child stage, you can even overlay JavaFX controls on top of the video (with full transparancy support).
VLC (with VLCJ) can be used in a similar fashion, but I find that the MPV solution performs better (faster seek and start times).

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