This is the exception raised every time I try to use the MediaPlayer which is used for playing audio and video files.
javafx.scene.media.MediaException: com.sun.media.jfxmedia.MediaException: Could not create player! at javafx.scene.media.MediaException.exceptionToMediaException(MediaException.java:146) ~[jfxrt.jar:?] at javafx.scene.media.MediaPlayer.init(MediaPlayer.java:511) ~[jfxrt.jar:?] at javafx.scene.media.MediaPlayer.<init>(MediaPlayer.java:414) ~[jfxrt.jar:?] [ Redacted paths here ] at javax.swing.SwingWorker$1.call(SwingWorker.java:295) [?:1.8.0_151] at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_151] at javax.swing.SwingWorker.run(SwingWorker.java:334) [?:1.8.0_151] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_151] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_151] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_151] Caused by: com.sun.media.jfxmedia.MediaException: Could not create player! at com.sun.media.jfxmediaimpl.NativeMediaManager.getPlayer(NativeMediaManager.java:224) ~[jfxrt.jar:?] at com.sun.media.jfxmedia.MediaManager.getPlayer(MediaManager.java:104) ~[jfxrt.jar:?] at javafx.scene.media.MediaPlayer.init(MediaPlayer.java:467) ~[jfxrt.jar:?] ... 13 more
This issue happens even with the pulseaudio plug, and the following added in stage-packages.
- gstreamer1.0-pulseaudio - gstreamer1.0-plugins-base - gstreamer1.0-plugins-good - gstreamer1.0-libav - libgstreamer-plugins-base1.0-0 - libgstreamer-plugins-good1.0-0 - libpulse0 - libavcodec-ffmpeg56 - libavformat-ffmpeg56 - libflac8 - libogg0 - libopus0 - liborc-0.4-0 - libspeex1 - libtheora0 - libvorbis0a - libvpx3 - libwavpack1 - libmp3lame0
Moreover, this happens with both the Oracle JRE, and the OpenJDK with OpenJFX. This happens for .wav and .mp3 files, so clearly it’s not related to the kind of file you try to throw at it.
This is quite problematic as JavaFX is pitched as “the future of Java” most of the time, and is the modern go-to when it comes to Java GUI toolkits. Do note that only the media part of JavaFX (audio and probably videos) is broken.
(Note : I am putting this in the snapd category as I am not sure what is faulty here. It seems that the build has nothing to do as everything seems to be packaged correctly, just runtime fails.)
As a side note : running the bundled java from the prime/ folder seems to work, but I think it’s pulling some kind of library from the system but I can’t figure out which, even with strace).
This is a followup to my previous post, as I realise the issue is bigger than just my use case.