I have developed a video player using javafx but when I increase the rate of the player i.e the speed of the player using mediaPlayer.setRate(1.5) method, the speed of the video is increased, but the audio sounds like a chipmunk.
I need to implement functionality like with youtube where if we increase the speed, it doesn't sound like a chipmunk.
Please help me - what can I do to achieve this?
What java api, class or 3rd party library should I use in my program in order to modify the audio pitch whilst running the video.
Got solution
Use VLCJ : http://capricasoftware.co.uk/projects/vlcj
VLCJ is a java wrapper framework that uses native vlc libraries.
They have very nice documentation and examples on Github.
It also supports JavaFx.
Github link :
VlcJ : https://github.com/caprica
VlcJ - JavaFx : https://github.com/caprica/vlcj-javafx
I've been looking around for quite some time to find a simple solution to the problem I am having.
Using Java, I'm trying to find a simple way to play the audio from a given YouTube URL to a selected audio mixer.
Looking around I see a few approaches, but they all appear to be missing an important aspect of what I'm looking for in one way or another
For example, using JavaFX or the JWebBrowser (in the DJ Native Swing library) both do not allow changing the audio output mixer, and the JavaFX browser no longer plays Youtube videos anyway.
I'd love to use the Java Sound API, as that allows audio mixer selection, but I don't really want to have to download the video, convert to wav, then play it. Using Java Sound is ideal if there is someway to steam the YouTube video audio to this API.
If you have any relatively straightforward way to play audio from a streamed YouTube video to a selectable audio device, please let me know.
I'm writing an accompaniment application that continuously needs to play specific notes (or even chords). I have a thread running that figures out which note I need to play, but I have no idea where to begin regarding the actual playback. I know I can create an audiotrack and write a sine wave to it, but for this project a simple tone won't cut it. So I'm guessing I either need to use MIDI (can android do that?) or to somehow take a sample and change its pitch on the fly, but I don't know if that's even possible.
All I can say is to check out pitch-shifting (which you seem to have heard of) and soundpool (which would require some recording of your own) and these 2 links:
Audio Playback Rate in Android
Programmatically increase the pitch of an array of audio samples
the second link seems to have more info.
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.
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).