我刚刚将计算机升级到Ubuntu 16.04。现在，每次我尝试运行使用opencv编译的软件时，都会出现以下错误：
libavcodec.so.56: cannot open shared object file: No such file or directory
环顾/usr/lib/x86_64-linux-gnu/，我可以找到libavcodec.so，但不是libavcodec.so.56。
尝试运行sudo apt-get install libavcodec56时，我得到：
Package 'libavcodec56' has no installation candidate
我已经在互联网上寻找答案，但此时却找不到任何东西。任何帮助解决这个烦人的问题将非常感激。
答案 0 :(得分：1)
我将在这里发布如何在安装opencv for python时解决我的覆盆子pi 3中的相同问题，希望有时候有人这样。
1）确保您没有＆＃34; python-opencv＆＃34;以外的opencv版本。通过以下命令。
26-Aug-2017 11:14:48.178 INFO [main] org.apache.catalina.core.StandardServer.await A valid shutdown command was received via the shutdown port. Stopping the Server instance.
26-Aug-2017 11:14:48.180 INFO [main] org.apache.coyote.AbstractProtocol.pause Pausing ProtocolHandler ["http-nio-8080"]
26-Aug-2017 11:14:48.232 INFO [main] org.apache.coyote.AbstractProtocol.pause Pausing ProtocolHandler ["ajp-nio-8009"]
26-Aug-2017 11:14:48.283 INFO [main] org.apache.catalina.core.StandardService.stopInternal Stopping service Catalina
26-Aug-2017 11:14:48.759 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project3] appears to have started a thread named [DefaultQuartzScheduler_Worker-1] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:48.761 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project3] appears to have started a thread named [DefaultQuartzScheduler_Worker-2] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:48.762 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project3] appears to have started a thread named [DefaultQuartzScheduler_Worker-3] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:48.762 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project3] appears to have started a thread named [DefaultQuartzScheduler_Worker-4] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:48.763 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project3] appears to have started a thread named [DefaultQuartzScheduler_Worker-5] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:48.764 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project3] appears to have started a thread named [DefaultQuartzScheduler_Worker-6] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:48.765 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project3] appears to have started a thread named [DefaultQuartzScheduler_Worker-7] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:48.765 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project3] appears to have started a thread named [DefaultQuartzScheduler_Worker-8] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:48.766 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project3] appears to have started a thread named [DefaultQuartzScheduler_Worker-9] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:48.767 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project3] appears to have started a thread named [DefaultQuartzScheduler_Worker-10] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:48.768 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project3] appears to have started a thread named [Timer-1] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
java.util.TimerThread.mainLoop(Timer.java:552)
java.util.TimerThread.run(Timer.java:505)
26-Aug-2017 11:14:48.769 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project3] appears to have started a thread named [DefaultQuartzScheduler_QuartzSchedulerThread] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.core.QuartzSchedulerThread.run(QuartzSchedulerThread.java:253)
26-Aug-2017 11:14:48.804 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project2] appears to have started a thread named [DefaultQuartzScheduler_Worker-1] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:48.805 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project2] appears to have started a thread named [DefaultQuartzScheduler_Worker-2] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:48.805 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project2] appears to have started a thread named [DefaultQuartzScheduler_Worker-3] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:48.806 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project2] appears to have started a thread named [DefaultQuartzScheduler_Worker-4] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:48.807 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project2] appears to have started a thread named [DefaultQuartzScheduler_Worker-5] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:48.808 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project2] appears to have started a thread named [DefaultQuartzScheduler_Worker-6] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:48.808 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project2] appears to have started a thread named [DefaultQuartzScheduler_Worker-7] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:48.809 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project2] appears to have started a thread named [DefaultQuartzScheduler_Worker-8] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:48.810 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project2] appears to have started a thread named [DefaultQuartzScheduler_Worker-9] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:48.811 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project2] appears to have started a thread named [DefaultQuartzScheduler_Worker-10] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:49.006 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project4] appears to have started a thread named [DefaultQuartzScheduler_Worker-1] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:49.007 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project4] appears to have started a thread named [DefaultQuartzScheduler_Worker-2] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:49.009 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project4] appears to have started a thread named [DefaultQuartzScheduler_Worker-3] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:49.010 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project4] appears to have started a thread named [DefaultQuartzScheduler_Worker-4] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:49.012 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project4] appears to have started a thread named [DefaultQuartzScheduler_Worker-5] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:49.014 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project4] appears to have started a thread named [DefaultQuartzScheduler_Worker-6] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:49.015 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project4] appears to have started a thread named [DefaultQuartzScheduler_Worker-7] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:49.016 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project4] appears to have started a thread named [DefaultQuartzScheduler_Worker-8] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:49.017 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project4] appears to have started a thread named [DefaultQuartzScheduler_Worker-9] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:49.020 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project4] appears to have started a thread named [DefaultQuartzScheduler_Worker-10] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:568)
26-Aug-2017 11:14:49.021 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project4] appears to have started a thread named [Timer-2] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
java.util.TimerThread.mainLoop(Timer.java:552)
java.util.TimerThread.run(Timer.java:505)
26-Aug-2017 11:14:49.023 WARNING [localhost-startStop-2] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [project4] appears to have started a thread named [DefaultQuartzScheduler_QuartzSchedulerThread] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Object.wait(Native Method)
org.quartz.core.QuartzSchedulerThread.run(QuartzSchedulerThread.java:253)
26-Aug-2017 11:14:49.050 INFO [main] org.apache.coyote.AbstractProtocol.stop Stopping ProtocolHandler ["http-nio-8080"]
26-Aug-2017 11:14:49.078 INFO [main] org.apache.coyote.AbstractProtocol.stop Stopping ProtocolHandler ["ajp-nio-8009"]
26-Aug-2017 11:14:49.179 INFO [main] org.apache.coyote.AbstractProtocol.destroy Destroying ProtocolHandler ["http-nio-8080"]
26-Aug-2017 11:14:49.180 INFO [main] org.apache.coyote.AbstractProtocol.destroy Destroying ProtocolHandler ["ajp-nio-8009"]
26-Aug-2017 11:15:35.419 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version: Apache Tomcat/8.0.45
26-Aug-2017 11:15:35.423 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server built: Jun 26 2017 20:06:07 UTC
26-Aug-2017 11:15:35.423 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server number: 8.0.45.0
26-Aug-2017 11:15:35.423 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Name: Linux
26-Aug-2017 11:15:35.423 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Version: 3.10.0-514.el7.x86_64
26-Aug-2017 11:15:35.423 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Architecture: amd64
26-Aug-2017 11:15:35.423 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Java Home: /usr/java/jdk1.8.0_144/jre
26-Aug-2017 11:15:35.423 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Version: 1.8.0_144-b01
26-Aug-2017 11:15:35.424 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Vendor: Oracle Corporation
26-Aug-2017 11:15:35.424 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_BASE: /opt/apache-tomcat-8.0.45
26-Aug-2017 11:15:35.424 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_HOME: /opt/apache-tomcat-8.0.45
26-Aug-2017 11:15:35.424 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.config.file=/opt/apache-tomcat-8.0.45/conf/logging.properties
26-Aug-2017 11:15:35.424 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
26-Aug-2017 11:15:35.425 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djdk.tls.ephemeralDHKeySize=2048
26-Aug-2017 11:15:35.425 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.protocol.handler.pkgs=org.apache.catalina.webresources
26-Aug-2017 11:15:35.425 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.endorsed.dirs=/opt/apache-tomcat-8.0.45/endorsed
26-Aug-2017 11:15:35.425 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.base=/opt/apache-tomcat-8.0.45
26-Aug-2017 11:15:35.425 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.home=/opt/apache-tomcat-8.0.45
26-Aug-2017 11:15:35.425 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.io.tmpdir=/opt/apache-tomcat-8.0.45/temp
26-Aug-2017 11:15:35.426 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
26-Aug-2017 11:15:35.622 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["http-nio-8080"]
26-Aug-2017 11:15:35.647 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read
26-Aug-2017 11:15:35.650 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["ajp-nio-8009"]
26-Aug-2017 11:15:35.653 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read
26-Aug-2017 11:15:35.654 INFO [main] org.apache.catalina.startup.Catalina.load Initialization processed in 748 ms
26-Aug-2017 11:15:36.311 INFO [main] org.apache.catalina.core.StandardService.startInternal Starting service Catalina
26-Aug-2017 11:15:36.312 INFO [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet Engine: Apache Tomcat/8.0.45
26-Aug-2017 11:15:36.375 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployWAR Deploying web application archive /opt/apache-tomcat-8.0.45/webapps/project2.war
26-Aug-2017 11:15:47.359 WARNING [localhost-startStop-1] org.apache.catalina.startup.ContextConfig.validateSecurityRoles Security role name wslogin used in an <auth-constraint> without being defined in a <security-role>
26-Aug-2017 11:15:47.725 INFO [localhost-startStop-1] org.apache.jasper.servlet.TldScanner.scanJars At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
如果上面显示输出已卸载，则按如下方式
sudo dpkg --get-selections | grep cv3
＆＃34; opencv3.1＆＃34;应该用你的版本替换。
2）然后按照以下步骤安装＆＃34; python-opencv＆＃34;
dpkg -r opencv3.1
this blog解释了安装过程
答案 1 :(得分：0)
只需输入以下命令安装ffmpeg：
sudo apt-get install -y ffmpeg
你得到这个档案：
/usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56复制到/usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56 答案 2 :(得分：0)
FeRD的评论使我得以解决问题。 ffmpeg是从源代码安装的，并且ld路径设置不正确，并且pulseaudio没有启动。 这样的lib文件是双重符号链接的：
krzys@kLatitude-E6430:~$ ls -l /usr/lib/x86_64-linux-gnu/libavcodec.so
lrwxrwxrwx 1 root root 20 sie 23 2018 /usr/lib/x86_64-linux-gnu/libavcodec.so -> libavcodec-ffmpeg.so
krzys@kLatitude-E6430:~$ ls -l /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so
lrwxrwxrwx 1 root root 30 sie 23 2018 /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so -> libavcodec-ffmpeg.so.56.60.100
sudo ldconfig -vl /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56.60.100
最后一条命令允许我设置符号链接，而pulseaudio deamon开始运行。
答案 3 :(得分：-1)
我遇到了类似的问题，我错过了4个共享库的版本符号链接但是有正确的库。您可以自己创建缺少的版本符号链接：
readelf -d libavcodec.so | grep SONAME
0x000000000000000e (SONAME) Library soname: [libavcodec-ffmpeg.so.56]
sudo ln -s libavcodec.so libavcodec.so.56