问不能在java应用程序中包含vlc库。
EN

Stack Overflow用户

提问于 2017-08-25 04:05:57

回答 3查看 2.2K关注 0票数 1

我试图为客户端创建媒体播放器，使用vlcj，而不需要在他们的PC机上安装VLC，从VLC。

我把这段代码从VLC的官方站点上取下来，它可以正常工作，直到我添加了EmbeddedMediaPlayerComponent() --它得到了错误

当我用

新NativeDiscovery().discover()；

因为我在我的电脑上安装了VLC，所以它工作得很好。

但当我用

私有静态最终字符串NATIVE_LIBRARY_SEARCH_PATH = "C:\Program \VideoLAN\VLC“； ( NativeLibrary.addSearchPath(RuntimeUtil.getLibVlcLibraryName()，NATIVE_LIBRARY_SEARCH_PATH)； ( Native.loadLibrary(RuntimeUtil.getLibVlcLibraryName()，LibVlc.class)；

这是错误日志

14:49:08.471 [main]                  INFO                                                   uk.co.caprica.vlcj.Info - vlcj: 3.10.1
14:49:08.482 [main]                  INFO                                                   uk.co.caprica.vlcj.Info - java: 1.8.0_131 Oracle Corporation
14:49:08.482 [main]                  INFO                                                   uk.co.caprica.vlcj.Info - java home: C:\Program Files\Java\jre1.8.0_131
14:49:08.483 [main]                  INFO                                                   uk.co.caprica.vlcj.Info - os: Windows 10 10.0 amd64


 V: 2.2.6 Umbrella
14:49:08.831 [AWT-EventQueue-0]      DEBUG                uk.co.caprica.vlcj.component.EmbeddedMediaPlayerComponent - args=[--video-title=vlcj video output, --no-snapshot-preview, --quiet-synchro, --sub-filter=logo:marq, --intf=dummy]
14:49:08.841 [AWT-EventQueue-0]      DEBUG                             uk.co.caprica.vlcj.player.MediaPlayerFactory - initX=null
14:49:08.853 [AWT-EventQueue-0]      INFO                                  uk.co.caprica.vlcj.binding.LibVlcFactory - vlc: 2.2.6 Umbrella, changeset 2.2.6-0-g1aae789
14:49:08.854 [AWT-EventQueue-0]      INFO                                  uk.co.caprica.vlcj.binding.LibVlcFactory - libvlc: C:\Program Files\VideoLAN\VLC\libvlc.dll
14:49:08.854 [AWT-EventQueue-0]      DEBUG                             uk.co.caprica.vlcj.player.MediaPlayerFactory - MediaPlayerFactory(libvlc=Proxy interface to Native Library <C:\Program Files\VideoLAN\VLC\libvlc.dll@1723334656>,libvlcArgs=[--video-title=vlcj video output, --no-snapshot-preview, --quiet-synchro, --sub-filter=logo:marq, --intf=dummy])
14:49:08.855 [AWT-EventQueue-0]      DEBUG                             uk.co.caprica.vlcj.player.MediaPlayerFactory - jna.library.path=null
14:49:08.856 [AWT-EventQueue-0]      DEBUG                             uk.co.caprica.vlcj.player.MediaPlayerFactory - VLC_PLUGIN_PATH=null
[00000000007ecfc0] core libvlc error: No plugins found! Check your VLC installation.
14:49:08.887 [AWT-EventQueue-0]      DEBUG                             uk.co.caprica.vlcj.player.MediaPlayerFactory - instance=null
14:49:08.888 [AWT-EventQueue-0]      ERROR                             uk.co.caprica.vlcj.player.MediaPlayerFactory - Failed to initialise libvlc
Exception in thread "AWT-EventQueue-0" java.lang.RuntimeException: Failed to initialise libvlc.

This is most often caused either by an invalid vlc option being passed when creating a MediaPlayerFactory or by libvlc being unable to locate the required plugins.

If libvlc is unable to locate the required plugins the instructions below may help:

In the text below <libvlc-path> represents the name of the directory containing "libvlc.dll" and "libvlccore.dll" and <plugins-path> represents the name of the directory containing the vlc plugins...

For libvlc to function correctly the vlc plugins must be available, there are a number of different ways to achieve this:
 1. Make sure the plugins are installed in the "<libvlc-path>/plugins" directory, this should be the case with a normal vlc installation.
 2. Set the VLC_PLUGIN_PATH operating system environment variable to point to "<plugins-path>".

More information may be available in the log.

at uk.co.caprica.vlcj.player.MediaPlayerFactory.<init>(MediaPlayerFactory.java:300)
    at uk.co.caprica.vlcj.player.MediaPlayerFactory.<init>(MediaPlayerFactory.java:259)
    at uk.co.caprica.vlcj.component.EmbeddedMediaPlayerComponent.onGetMediaPlayerFactory(EmbeddedMediaPlayerComponent.java:349)
    at uk.co.caprica.vlcj.component.EmbeddedMediaPlayerComponent.<init>(EmbeddedMediaPlayerComponent.java:217)
    at tutorial.Tutorial.<init>(Tutorial.java:68)
    at tutorial.Tutorial$1.run(Tutorial.java:49)
    at java.awt.event.InvocationEvent.dispatch(Unknown Source)
    at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
    at java.awt.EventQueue.access$500(Unknown Source)
    at java.awt.EventQueue$3.run(Unknown Source)
    at java.awt.EventQueue$3.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
    at java.awt.EventQueue.dispatchEvent(Unknown Source)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.run(Unknown Source)

你能帮我把VLC捆绑到我的项目上吗？

media-player

vlc

vlcj

jvlc

java

回答 3

Stack Overflow用户

发布于 2017-10-04 03:26:20

对我来说最好的解决方案是编写自己的发现策略，并将VLC库与应用程序捆绑在一起。这样，不需要安装VLC。所有东西都随应用程序而来。

下面是一个发现策略的例子：

https://github.com/johndeverall/BehaviourCoder/blob/master/src/main/java/de/bochumuniruhr/psy/bio/behaviourcoder/BundledVLCLibsDiscoveryStrategy.java

您可能可以使用上面未经编辑的链接类。

下面是一个用法示例：

final boolean found = new NativeDiscovery(new BundledVLCLibsDiscoveryStrategy()).discover();
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                new Main(found);
            }
        });

除此之外，您还需要在类路径中包含相关的VLC库，就像它们包含在链接项目的资源文件夹中一样。

图书馆/src/main/resources/lib

目前我只在windows上工作，但是如果你能让它在mac和/或linux上工作，我会很感激你的公关！

票数 1

Stack Overflow用户

发布于 2017-11-09 10:43:39

我用VLCJ-3.10.1，JNA4.1组合观察到了这个问题。我通过在我的pom.xml文件中添加JNA4.2来解决这个问题。

<dependency>
    <groupId>uk.co.caprica</groupId>
    <artifactId>vlcj</artifactId>
    <version>3.10.1</version>
</dependency>
<dependency>
    <groupId>net.java.dev.jna</groupId>
    <artifactId>jna</artifactId>
    <version>4.2.0</version>
</dependency>

然后使用下面的代码添加VLC 2.2.6库。

NativeLibrary.addSearchPath(RuntimeUtil.getLibVlcLibraryName(), System.getProperty("user.dir")+"/lib");
System.setProperty("VLC_PLUGIN_PATH",  System.getProperty("user.dir")+"/lib/plugins");