Recherche avancée

Sur d’autres sites (4480)

• Java.lang.NoClassDefFoundError caused by FFmpeg when deployed on Linux as a packaged .war (Works on development machine)

  27 décembre 2016, par Jake Miller

  I use an FFmpeg wrapper to create thumbnails for videos uploaded by users. This works perfectly fine when testing on my development machine. However, whenever I package my project as a .war and deploy to Amazon Web Services, I get the following stack trace :

  Caused by: java.lang.NoClassDefFoundError: Could not initialize class org.bytedeco.javacpp.avutil
  
      at java.lang.Class.forName0(Native Method) ~[na:1.8.0_101]
  
      at java.lang.Class.forName(Class.java:348) ~[na:1.8.0_101]
  
      at org.bytedeco.javacpp.Loader.load(Loader.java:472) ~[javacpp-1.2.1.jar!/:1.2.1]
  
      at org.bytedeco.javacpp.Loader.load(Loader.java:417) ~[javacpp-1.2.1.jar!/:1.2.1]
  
      at org.bytedeco.javacpp.avformat$AVFormatContext.<clinit>(avformat.java:2597) ~[ffmpeg-2.8.1-1.1.jar!/:1.2.1]
  
      at org.bytedeco.javacv.FFmpegFrameGrabber.startUnsafe(FFmpegFrameGrabber.java:391) ~[javacv-1.2.jar!/:1.2]
  
      at org.bytedeco.javacv.FFmpegFrameGrabber.start(FFmpegFrameGrabber.java:385) ~[javacv-1.2.jar!/:1.2]
  
      at com.myapp.app.service.ICampaignService.createThumbnail(ICampaignService.java:425) ~[classes!/:0.0.44T-SNAPSHOT]
  
      at com.myapp.app.service.ICampaignService$$FastClassBySpringCGLIB$$47736265.invoke(<generated>) ~[classes!/:0.0.44T-SNAPSHOT]
  
      at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) ~[spring-core-4.3.2.RELEASE.jar!/:4.3.2.RELEASE]
  
      at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:720) ~[spring-aop-4.3.2.RELEASE.jar!/:4.3.2.RELEASE]
  
      at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) ~[spring-aop-4.3.2.RELEASE.jar!/:4.3.2.RELEASE]
  
      at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99) ~[spring-tx-4.3.2.RELEASE.jar!/:4.3.2.RELEASE]
  
      at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:280) ~[spring-tx-4.3.2.RELEASE.jar!/:4.3.2.RELEASE]
  
      at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) ~[spring-tx-4.3.2.RELEASE.jar!/:4.3.2.RELEASE]
  
      at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.2.RELEASE.jar!/:4.3.2.RELEASE]
  
      at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:655) ~[spring-aop-4.3.2.RELEASE.jar!/:4.3.2.RELEASE]
  
      at com.myapp.app.service.ICampaignService$$EnhancerBySpringCGLIB$$67e59894.createThumbnail(<generated>) ~[classes!/:0.0.44T-SNAPSHOT]
  
      at com.myapp.app.controllers.CampaignController.uploadCampaign(CampaignController.java:237) ~[classes!/:0.0.44T-SNAPSHOT]
  
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_101]
  
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_101]
  
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_101]
  
      at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_101]
  
      at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221) ~[spring-web-4.3.2.RELEASE.jar!/:4.3.2.RELEASE]
  
      at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136) ~[spring-web-4.3.2.RELEASE.jar!/:4.3.2.RELEASE]
  
      at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:114) ~[spring-webmvc-4.3.2.RELEASE.jar!/:4.3.2.RELEASE]
  
      at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827) ~[spring-webmvc-4.3.2.RELEASE.jar!/:4.3.2.RELEASE]
  
      at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738) ~[spring-webmvc-4.3.2.RELEASE.jar!/:4.3.2.RELEASE]
  
      at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) ~[spring-webmvc-4.3.2.RELEASE.jar!/:4.3.2.RELEASE]
  
      at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963) ~[spring-webmvc-4.3.2.RELEASE.jar!/:4.3.2.RELEASE]
  
      ... 85 common frames omitted
  
  </generated></generated></clinit>

  Here’s my maven dependencies for the FFmpeg wrapper :

  <dependency>
  
      <groupid>org.bytedeco</groupid>
  
      <artifactid>javacv</artifactid>
  
      <version>1.3</version>
  
  </dependency>
  
  <dependency>
  
      <groupid>org.bytedeco</groupid>
  
      <artifactid>javacpp</artifactid>
  
      <version>1.3</version>
  
  </dependency>
  
  <dependency>
  
      <groupid>org.bytedeco.javacpp-presets</groupid>
  
      <artifactid>ffmpeg</artifactid>
  
      <version>3.2.1-1.3</version>
  
  </dependency>
  
  <dependency>
  
      <groupid>org.bytedeco.javacpp-presets</groupid>
  
      <artifactid>opencv-platform</artifactid>
  
      <version>3.1.0-1.3</version>
  
  </dependency>

  Again, this library works perfectly fine on my development machine.

  • Development machine : Windows 10, 64-bit (Works)

  • AWS instance:64bit Amazon Linux 2016.09 v2.2.0 running Java 8 (Causes the issue above)

  I’ve spent around 7 hours trying to fix the issue by messing around with versions. Any idea how to solve this issue ?

  EDIT

  Dependency Tree :

  [INFO] +- org.springframework.boot:spring-boot-starter-data-jpa:jar:1.4.0.RELEASE:compile
  
  [INFO] |  +- org.springframework.boot:spring-boot-starter:jar:1.4.0.RELEASE:compile
  
  [INFO] |  |  +- org.springframework.boot:spring-boot:jar:1.4.0.RELEASE:compile
  
  [INFO] |  |  +- org.springframework.boot:spring-boot-autoconfigure:jar:1.4.0.RELEASE:compile
  
  [INFO] |  |  +- org.springframework.boot:spring-boot-starter-logging:jar:1.4.0.RELEASE:compile
  
  [INFO] |  |  |  +- ch.qos.logback:logback-classic:jar:1.1.7:compile
  
  [INFO] |  |  |  |  \- ch.qos.logback:logback-core:jar:1.1.7:compile
  
  [INFO] |  |  |  +- org.slf4j:jul-to-slf4j:jar:1.7.21:compile
  
  [INFO] |  |  |  \- org.slf4j:log4j-over-slf4j:jar:1.7.21:compile
  
  [INFO] |  |  \- org.yaml:snakeyaml:jar:1.17:runtime
  
  [INFO] |  +- org.springframework.boot:spring-boot-starter-aop:jar:1.4.0.RELEASE:compile
  
  [INFO] |  |  \- org.aspectj:aspectjweaver:jar:1.8.9:compile
  
  [INFO] |  +- org.springframework.boot:spring-boot-starter-jdbc:jar:1.4.0.RELEASE:compile
  
  [INFO] |  |  +- org.apache.tomcat:tomcat-jdbc:jar:8.5.4:compile
  
  [INFO] |  |  |  \- org.apache.tomcat:tomcat-juli:jar:8.5.4:compile
  
  [INFO] |  |  \- org.springframework:spring-jdbc:jar:4.3.2.RELEASE:compile
  
  [INFO] |  +- org.hibernate:hibernate-core:jar:5.0.9.Final:compile
  
  [INFO] |  |  +- org.jboss.logging:jboss-logging:jar:3.3.0.Final:compile
  
  [INFO] |  |  +- org.hibernate.javax.persistence:hibernate-jpa-2.1-api:jar:1.0.0.Final:compile
  
  [INFO] |  |  +- org.javassist:javassist:jar:3.20.0-GA:compile
  
  [INFO] |  |  +- antlr:antlr:jar:2.7.7:compile
  
  [INFO] |  |  +- org.jboss:jandex:jar:2.0.0.Final:compile
  
  [INFO] |  |  +- dom4j:dom4j:jar:1.6.1:compile
  
  [INFO] |  |  |  \- xml-apis:xml-apis:jar:1.4.01:compile
  
  [INFO] |  |  \- org.hibernate.common:hibernate-commons-annotations:jar:5.0.1.Final:compile
  
  [INFO] |  +- org.hibernate:hibernate-entitymanager:jar:5.0.9.Final:compile
  
  [INFO] |  +- javax.transaction:javax.transaction-api:jar:1.2:compile
  
  [INFO] |  +- org.springframework.data:spring-data-jpa:jar:1.10.2.RELEASE:compile
  
  [INFO] |  |  +- org.springframework.data:spring-data-commons:jar:1.12.2.RELEASE:compile
  
  [INFO] |  |  +- org.springframework:spring-orm:jar:4.3.2.RELEASE:compile
  
  [INFO] |  |  +- org.springframework:spring-tx:jar:4.3.2.RELEASE:compile
  
  [INFO] |  |  \- org.slf4j:jcl-over-slf4j:jar:1.7.21:compile
  
  [INFO] |  \- org.springframework:spring-aspects:jar:4.3.2.RELEASE:compile
  
  [INFO] +- org.springframework.boot:spring-boot-starter-security:jar:1.4.0.RELEASE:compile
  
  [INFO] |  +- org.springframework:spring-aop:jar:4.3.2.RELEASE:compile
  
  [INFO] |  +- org.springframework.security:spring-security-config:jar:4.1.1.RELEASE:compile
  
  [INFO] |  \- org.springframework.security:spring-security-web:jar:4.1.1.RELEASE:compile
  
  [INFO] |     \- org.springframework:spring-expression:jar:4.3.2.RELEASE:compile
  
  [INFO] +- org.springframework.boot:spring-boot-starter-web:jar:1.4.0.RELEASE:compile
  
  [INFO] |  +- org.springframework.boot:spring-boot-starter-tomcat:jar:1.4.0.RELEASE:compile
  
  [INFO] |  |  +- org.apache.tomcat.embed:tomcat-embed-core:jar:8.5.4:compile
  
  [INFO] |  |  +- org.apache.tomcat.embed:tomcat-embed-el:jar:8.5.4:compile
  
  [INFO] |  |  \- org.apache.tomcat.embed:tomcat-embed-websocket:jar:8.5.4:compile
  
  [INFO] |  +- org.hibernate:hibernate-validator:jar:5.2.4.Final:compile
  
  [INFO] |  |  +- javax.validation:validation-api:jar:1.1.0.Final:compile
  
  [INFO] |  |  \- com.fasterxml:classmate:jar:1.3.1:compile
  
  [INFO] |  +- com.fasterxml.jackson.core:jackson-databind:jar:2.8.1:compile
  
  [INFO] |  |  +- com.fasterxml.jackson.core:jackson-annotations:jar:2.8.1:compile
  
  [INFO] |  |  \- com.fasterxml.jackson.core:jackson-core:jar:2.8.1:compile
  
  [INFO] |  +- org.springframework:spring-web:jar:4.3.2.RELEASE:compile
  
  [INFO] |  \- org.springframework:spring-webmvc:jar:4.3.2.RELEASE:compile
  
  [INFO] +- org.springframework.boot:spring-boot-starter-test:jar:1.4.0.RELEASE:test
  
  [INFO] |  +- org.springframework.boot:spring-boot-test:jar:1.4.0.RELEASE:test
  
  [INFO] |  +- org.springframework.boot:spring-boot-test-autoconfigure:jar:1.4.0.RELEASE:test
  
  [INFO] |  +- com.jayway.jsonpath:json-path:jar:2.2.0:test
  
  [INFO] |  |  \- net.minidev:json-smart:jar:2.2.1:test
  
  [INFO] |  |     \- net.minidev:accessors-smart:jar:1.1:test
  
  [INFO] |  |        \- org.ow2.asm:asm:jar:5.0.3:test
  
  [INFO] |  +- junit:junit:jar:4.12:test
  
  [INFO] |  +- org.assertj:assertj-core:jar:2.5.0:test
  
  [INFO] |  +- org.mockito:mockito-core:jar:1.10.19:test
  
  [INFO] |  |  \- org.objenesis:objenesis:jar:2.1:test
  
  [INFO] |  +- org.hamcrest:hamcrest-core:jar:1.3:test
  
  [INFO] |  +- org.hamcrest:hamcrest-library:jar:1.3:test
  
  [INFO] |  +- org.skyscreamer:jsonassert:jar:1.3.0:test
  
  [INFO] |  |  \- org.json:json:jar:20140107:test
  
  [INFO] |  +- org.springframework:spring-core:jar:4.3.2.RELEASE:compile
  
  [INFO] |  \- org.springframework:spring-test:jar:4.3.2.RELEASE:test
  
  [INFO] +- org.springframework.security.oauth:spring-security-oauth2:jar:2.0.10.RELEASE:compile
  
  [INFO] |  +- org.springframework:spring-beans:jar:4.3.2.RELEASE:compile
  
  [INFO] |  +- org.springframework:spring-context:jar:4.3.2.RELEASE:compile
  
  [INFO] |  +- org.springframework.security:spring-security-core:jar:4.1.1.RELEASE:compile
  
  [INFO] |  |  \- aopalliance:aopalliance:jar:1.0:compile
  
  [INFO] |  +- commons-codec:commons-codec:jar:1.10:compile
  
  [INFO] |  \- org.codehaus.jackson:jackson-mapper-asl:jar:1.9.13:compile
  
  [INFO] |     \- org.codehaus.jackson:jackson-core-asl:jar:1.9.13:compile
  
  [INFO] +- org.springframework.security:spring-security-jwt:jar:1.0.4.RELEASE:compile
  
  [INFO] |  \- org.bouncycastle:bcpkix-jdk15on:jar:1.47:compile
  
  [INFO] |     \- org.bouncycastle:bcprov-jdk15on:jar:1.47:compile
  
  [INFO] +- mysql:mysql-connector-java:jar:5.1.39:compile
  
  [INFO] +- commons-io:commons-io:jar:2.5:compile
  
  [INFO] +- org.apache.commons:commons-lang3:jar:3.0:compile
  
  [INFO] +- org.bytedeco:javacv:jar:1.3:compile
  
  [INFO] |  +- org.bytedeco.javacpp-presets:opencv:jar:3.1.0-1.3:compile
  
  [INFO] |  +- org.bytedeco.javacpp-presets:flycapture:jar:2.9.3.43-1.3:compile
  
  [INFO] |  +- org.bytedeco.javacpp-presets:libdc1394:jar:2.2.4-1.3:compile
  
  [INFO] |  +- org.bytedeco.javacpp-presets:libfreenect:jar:0.5.3-1.3:compile
  
  [INFO] |  +- org.bytedeco.javacpp-presets:librealsense:jar:1.9.6-1.3:compile
  
  [INFO] |  +- org.bytedeco.javacpp-presets:videoinput:jar:0.200-1.3:compile
  
  [INFO] |  +- org.bytedeco.javacpp-presets:artoolkitplus:jar:2.3.1-1.3:compile
  
  [INFO] |  \- org.bytedeco.javacpp-presets:flandmark:jar:1.07-1.3:compile
  
  [INFO] +- org.bytedeco:javacpp:jar:1.3:compile
  
  [INFO] +- org.bytedeco.javacpp-presets:ffmpeg:jar:3.2.1-1.3:compile
  
  [INFO] +- org.bytedeco.javacpp-presets:opencv-platform:jar:3.1.0-1.3:compile
  
  [INFO] |  +- org.bytedeco.javacpp-presets:opencv:jar:android-arm:3.1.0-1.3:compile
  
  [INFO] |  +- org.bytedeco.javacpp-presets:opencv:jar:android-x86:3.1.0-1.3:compile
  
  [INFO] |  +- org.bytedeco.javacpp-presets:opencv:jar:linux-x86:3.1.0-1.3:compile
  
  [INFO] |  +- org.bytedeco.javacpp-presets:opencv:jar:linux-x86_64:3.1.0-1.3:compile
  
  [INFO] |  +- org.bytedeco.javacpp-presets:opencv:jar:linux-armhf:3.1.0-1.3:compile
  
  [INFO] |  +- org.bytedeco.javacpp-presets:opencv:jar:linux-ppc64le:3.1.0-1.3:compile
  
  [INFO] |  +- org.bytedeco.javacpp-presets:opencv:jar:macosx-x86_64:3.1.0-1.3:compile
  
  [INFO] |  +- org.bytedeco.javacpp-presets:opencv:jar:windows-x86:3.1.0-1.3:compile
  
  [INFO] |  \- org.bytedeco.javacpp-presets:opencv:jar:windows-x86_64:3.1.0-1.3:compile
  
  [INFO] +- com.paypal.sdk:rest-api-sdk:jar:1.13.0:compile
  
  [INFO] |  +- org.slf4j:slf4j-api:jar:1.7.21:compile
  
  [INFO] |  \- com.google.code.gson:gson:jar:2.7:compile
  
  [INFO] +- com.squareup.okhttp3:okhttp:jar:3.4.1:compile
  
  [INFO] |  \- com.squareup.okio:okio:jar:1.9.0:compile
  
  [INFO] +- javax.mail:mail:jar:1.4:compile
  
  [INFO] |  \- javax.activation:activation:jar:1.1:compile
  
  [INFO] \- com.amazonaws:aws-java-sdk:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-support:jar:1.11.58:compile
  
  [INFO]    |  \- com.amazonaws:jmespath-java:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-simpledb:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-servicecatalog:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-servermigration:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-simpleworkflow:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-storagegateway:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-route53:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-s3:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-importexport:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-sts:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-sqs:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-rds:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-redshift:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-elasticbeanstalk:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-glacier:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-iam:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-datapipeline:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-elasticloadbalancing:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-elasticloadbalancingv2:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-emr:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-elasticache:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-elastictranscoder:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-ec2:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-dynamodb:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-sns:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-budgets:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-cloudtrail:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-cloudwatch:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-logs:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-events:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-cognitoidentity:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-cognitosync:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-directconnect:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-cloudformation:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-cloudfront:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-kinesis:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-opsworks:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-ses:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-autoscaling:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-cloudsearch:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-cloudwatchmetrics:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-codedeploy:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-codepipeline:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-kms:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-config:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-lambda:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-ecs:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-ecr:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-cloudhsm:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-ssm:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-workspaces:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-machinelearning:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-directory:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-efs:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-codecommit:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-devicefarm:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-elasticsearch:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-waf:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-marketplacecommerceanalytics:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-inspector:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-iot:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-api-gateway:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-acm:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-gamelift:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-dms:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-marketplacemeteringservice:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-cognitoidp:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-discovery:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-applicationautoscaling:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-snowball:jar:1.11.58:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-core:jar:1.11.58:compile
  
  [INFO]    |  +- commons-logging:commons-logging:jar:1.1.3:compile
  
  [INFO]    |  +- org.apache.httpcomponents:httpclient:jar:4.5.2:compile
  
  [INFO]    |  |  \- org.apache.httpcomponents:httpcore:jar:4.4.5:compile
  
  [INFO]    |  +- software.amazon.ion:ion-java:jar:1.0.1:compile
  
  [INFO]    |  +- com.fasterxml.jackson.dataformat:jackson-dataformat-cbor:jar:2.8.1:compile
  
  [INFO]    |  \- joda-time:joda-time:jar:2.9.4:compile
  
  [INFO]    +- com.amazonaws:aws-java-sdk-models:jar:1.11.58:compile
  
  [INFO]    \- com.amazonaws:aws-java-sdk-swf-libraries:jar:1.11.22:compile

  Error after upgrading Linux to 2.4, downgrading javacpp to 1.2.1, and running mvn clean :

  java.lang.NoClassDefFoundError: Could not initialize class org.bytedeco.javacpp.avutil
  
      at java.lang.Class.forName0(Native Method) ~[na:1.8.0_111]
  
      at java.lang.Class.forName(Class.java:348) ~[na:1.8.0_111]
  
      at org.bytedeco.javacpp.Loader.load(Loader.java:472) ~[javacpp-1.2.1.jar!/:1.2.1]
  
      at org.bytedeco.javacpp.Loader.load(Loader.java:417) ~[javacpp-1.2.1.jar!/:1.2.1]
  
      at org.bytedeco.javacpp.avformat$AVFormatContext.<clinit>(avformat.java:2819) ~[ffmpeg-3.2.1-1.3.jar!/:1.2.1]
  
      at org.bytedeco.javacv.FFmpegFrameGrabber.startUnsafe(FFmpegFrameGrabber.java:391) ~[javacv-1.3.jar!/:1.3]
  
      at org.bytedeco.javacv.FFmpegFrameGrabber.start(FFmpegFrameGrabber.java:385) ~[javacv-1.3.jar!/:1.3]
  
  </clinit>

  WHAT I’VE TRIED SO FAR

  • upgrade to Linux to 2.4
  • downgrading javacpp to 1.2.1
  • running mvn clean
  • running mvn -U
  • deleting contents of /.m2/ and redownloading dependencies
  • various combinations of dependency versions
  • git clone on a Linux VM & running mvn install there

• How to Use Web Analytics to Improve SEO

  5 janvier 2022, par erin — Analytics Tips

  Everyone wants their website to rank highly in Google — and that’s exactly why the world of SEO is so competitive.

  In order to succeed in such a crowded space, it’s essential to equip yourself with the right tools and processes to ensure your website is maximally optimised for search engines.

  If you’d like to improve your website’s SEO rankings, leveraging web analytics is one of the best places to start. Web analytics provides valuable insights to help you assess performance, user behaviour and optimisation opportunities.

  In this blog, we’ll cover :

  The basics of SEO and web analytics

  Before we discuss how to use web analytics for SEO, let’s start with a quick explanation of both.

  SEO (Search Engine Optimisation) encompasses a broad set of activities aimed at increasing a website’s position in search engine results pages (SERPs). When a user enters a query (e.g. ‘marketing agencies in Dallas’) in a search engine, the websites that appear near the top of the page are optimised for search engines and therefore ranking for that particular term. 

  Web analytics refers to the monitoring/assessment of metrics that track traffic sources and user behaviour on a website. This involves the use of a web analytics tool to collect, aggregate, organise and visualise website data so that meaningful conclusions can be drawn.

  The importance of website analytics for SEO

  SEO revolves around search engine algorithms – a set of rules that dictates a website’s ranking for a given search query (i.e. keyword). The algorithm takes numerous factors into account to determine a particular site’s SERP ranking. So, to achieve strong SEO, your website needs to exhibit qualities that the algorithm deems important. That’s where web analytics comes into play.

  Web analytics allows you to track key metrics and data points that affect how the algorithm ranks your website. For example, how much time do users spend on your site ? Which external links are referring traffic to your site ? How do your site’s Core Web Vitals stack up ? 

  Understanding this data will supply you with the insights needed to make positive adjustments, ultimately improving your website’s SEO. 

  How do you analyse a website for SEO ?

  The SEO analysis of a website needs to be focused on relevant data that’s applicable to search engine rankings. When conducting your website SEO analysis, here are some notable metrics and data fields to pay attention to :

  1. Bounce rate and dwell time

  These metrics denote how much time users spend on your website. If users frequently exit your site after only a few seconds, Google may view this as a negative indicator. To reduce bounce rate and increase dwell time, you should work towards making your site’s content more captivating and ensuring that there aren’t any technical issues with your site (e.g. pages taking too long to load or not optimised for mobile).

  

  2. Broken/dead links

  Perform a technical analysis to scan your website for faulty links. If your site contains broken links that lead to 404 pages, this can detract from your website’s SEO rankings. Redirect those links to a related page or remove them.

  

  Matomo’s Crawling Errors report can give you instant access to this technical information so you can resolve it before it begins to impact your ranking.

  3. Scroll depth

  Measuring scroll depth (how far users scroll down the page) can help you gauge the quality of your content — and this goes hand-in-hand with bounce rate and dwell time. To assess scroll depth, you can use a Tag Manager to track the specific scroll percentage on your site’s pages.

  4. Transitions

  Studying how users transition from page to page within your site can help you understand their behaviour more holistically. Which pages do they tend to gravitate towards ? Are there CTAs on your blog that aren’t driving many click-throughs ? Optimising user journeys will, in turn, elevate the overall user experience on your site.

  

  5. Internal site search

  You can use site search tracking and reporting to learn what your audience is looking for. If you notice a trend (e.g. the majority of searches are for pricing because your pricing page isn’t in the navigation menu), this can inform both site architecture and content planning.

  

  Ecommerce sites in particular should be monitoring branded queries, especially in regards to brand misspellings that could be causing users to bounce off the site.

  6. Segments

  Separating your visitors into distinct segments can produce granular insights that paint a more accurate picture.

  For example, perhaps you notice that your bounce rate is far higher on mobile, or with users from the UK. In both cases, this knowledge will provide clarity on where to focus your optimisation efforts (e.g. mobile responsiveness, UK-specific content/landing pages, etc.).

  

  7. Acquisition channels

  It’s crucial to analyse where your website traffic is coming from. Among other things, reviewing your acquisition metrics will reveal which external websites are referring the most traffic to your website. 

  Links from external sites (also known as backlinks) are one of the most important ranking factors because this tells Google that your site is reputable and credible. So, you may choose to cultivate a relationship with these sites (or similar sites) by offering guest blogging and other link building initiatives.

  

  In addition to the above, you should also be monitoring your Core Web Vitals — which leads us to our next section.

  What are Core Web Vitals and why are they important ?

  Core Web Vitals are a set of 3 primary metrics that reflect the general user experience of a website. These metrics are load time, interactivity and stability. 

  1. Load time (LCP) refers to the amount of time it takes for your website’s text and images to load.
  2. Interactivity (FID) refers to the amount of time it takes for user input areas (buttons, form fields, etc.) to become functional.
  3. Stability (CLS) refers to the visual/spatial integrity of your website. If text, images, and other elements tend to suddenly shift position when a user is viewing the site, this will hurt your CLS score.

  

  So, why are these Core Web Vitals metrics important for SEO ? Generally speaking, Google prioritises user experience — and Core Web Vitals affect users’ satisfaction with a website. Furthermore, Google has confirmed that Core Web Vitals are, indeed, a ranking factor.

  Matomo enables you to track metrics for Core Web Vitals which we refer to as SEO Web Vitals.

  How to measure and track keyword performance

  We can’t talk about SEO and analytics without touching on keywords. Keywords (the words/phrases that users type in a search engine) are arguably the most cardinal component of SEO. So, outside of website performance, it’s also necessary to track the keywords your website is ranking for. 

  Recall from above that SEO is all about ranking highly on SERPs for certain search queries (i.e. keywords). To assess your Search Engine Keyword Performance, you can use an analytics tool to view Keyword reports for your website. These reports will show you which keywords your site ranks for, the average SERP position your site achieves for each keyword, the amount of traffic you receive from each keyword, and more.

  

  Digging into your keyword performance can help you identify valuable keyword opportunities and improvement goals.

  For example, upon reviewing your highest-traffic keywords, you may choose to create more blog content around those keywords to bolster your success. Or, perhaps you notice that your average position for a high-intent keyword is quite low. In that case, you could implement a targeted link building campaign to help boost your ranking for that keyword. 

  Final thoughts

  In this article, we’ve discussed the benefits of web analytics — particularly in regards to SEO. When it comes to selecting a web analytics tool, Google Analytics is by far the most popular choice. But that doesn’t make it the best.

  At Matomo, we’re committed to providing a superior alternative to Google Analytics. Matomo is a powerful, open-source web analytics platform that gives you 100% data ownership — protecting both your data and your customers’ privacy.

  Try our live demo or start a free 21-day trial now – no credit card required.

• No sounds on Apple devices after encoding videos [migrated]

  15 décembre 2013, par Ricardo

  I'm having a problem setting up a media server.
  Everything works just great except the sound of Apple devices, I'm not sure if that's something with "mute" on iOS or our codecs are just not compatible with iOS.

  OS :

  Ubuntu 12.04

  FFMPEG Config :

  ffmpeg version 0.10.8-7:0.10.8-1~lucid1 Copyright 2000-2013 the FFmpeg developers
  
    built on Sep  5 2013 19:50:14 with gcc 4.4.3
  
    configuration: --arch=amd64 --disable-stripping --enable-pthreads --enable-runtime-cpudetect --extra-version='7:0.10.8-1~lucid1' --libdir=/usr/lib --prefix=/usr --enable-bzlib --enable-libdc1394 --enable-libfreetype --enable-frei0r --enable-gnutls --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libpulse --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-vdpau --enable-libvorbis --enable-libvpx --enable-zlib --enable-gpl --enable-postproc --enable-libcdio --enable-x11grab --enable-libx264 --shlibdir=/usr/lib --enable-shared --disable-static
  
    avcodec     configuration: --arch=amd64 --disable-stripping --enable-pthreads --enable-runtime-cpudetect --extra-version='7:0.10.8-1~lucid1' --libdir=/usr/lib --prefix=/usr --enable-bzlib --enable-libdc1394 --enable-libfreetype --enable-frei0r --enable-gnutls --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libpulse --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-vdpau --enable-libvorbis --enable-libvpx --enable-zlib --enable-gpl --enable-postproc --enable-libcdio --enable-x11grab --enable-libx264 --shlibdir=/usr/lib --enable-shared --disable-static --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb
  
    libavutil      51. 35.100 / 51. 35.100
  
    libavcodec     53. 61.100 / 53. 61.100
  
    libavformat    53. 32.100 / 53. 32.100
  
    libavdevice    53.  4.100 / 53.  4.100
  
    libavfilter     2. 61.100 /  2. 61.100
  
    libswscale      2.  1.100 /  2.  1.100
  
    libswresample   0.  6.100 /  0.  6.100
  
    libpostproc    52.  0.100 / 52.  0.100
  
  Hyper fast Audio and Video encoder

  Codecs :

   D..... = Decoding supported
  
   .E.... = Encoding supported
  
   ..V... = Video codec
  
   ..A... = Audio codec
  
   ..S... = Subtitle codec
  
   ...S.. = Supports draw_horiz_band
  
   ....D. = Supports direct rendering method 1
  
   .....T = Supports weird frame truncation
  
   ------
  
   D V D  4xm             4X Movie
  
   D V D  8bps            QuickTime 8BPS video
  
   D A D  8svx_exp        8SVX exponential
  
   D A D  8svx_fib        8SVX fibonacci
  
    EV    a64multi        Multicolor charset for Commodore 64
  
    EV    a64multi5       Multicolor charset for Commodore 64, extended with 5th color (colram)
  
   DEA D  aac             Advanced Audio Coding
  
   D A D  aac_latm        AAC LATM (Advanced Audio Codec LATM syntax)
  
   D V D  aasc            Autodesk RLE
  
   DEA D  ac3             ATSC A/52A (AC-3)
  
    EA    ac3_fixed       ATSC A/52A (AC-3)
  
   D A D  adpcm_4xm       ADPCM 4X Movie
  
   DEA D  adpcm_adx       SEGA CRI ADX ADPCM
  
   D A D  adpcm_ct        ADPCM Creative Technology
  
   D A D  adpcm_ea        ADPCM Electronic Arts
  
   D A D  adpcm_ea_maxis_xa ADPCM Electronic Arts Maxis CDROM XA
  
   D A D  adpcm_ea_r1     ADPCM Electronic Arts R1
  
   D A D  adpcm_ea_r2     ADPCM Electronic Arts R2
  
   D A D  adpcm_ea_r3     ADPCM Electronic Arts R3
  
   D A D  adpcm_ea_xas    ADPCM Electronic Arts XAS
  
   D A D  adpcm_ima_amv   ADPCM IMA AMV
  
   D A D  adpcm_ima_apc   ADPCM IMA CRYO APC
  
   D A D  adpcm_ima_dk3   ADPCM IMA Duck DK3
  
   D A D  adpcm_ima_dk4   ADPCM IMA Duck DK4
  
   D A D  adpcm_ima_ea_eacs ADPCM IMA Electronic Arts EACS
  
   D A D  adpcm_ima_ea_sead ADPCM IMA Electronic Arts SEAD
  
   D A D  adpcm_ima_iss   ADPCM IMA Funcom ISS
  
   DEA D  adpcm_ima_qt    ADPCM IMA QuickTime
  
   D A D  adpcm_ima_smjpeg ADPCM IMA Loki SDL MJPEG
  
   DEA D  adpcm_ima_wav   ADPCM IMA WAV
  
   D A D  adpcm_ima_ws    ADPCM IMA Westwood
  
   DEA D  adpcm_ms        ADPCM Microsoft
  
   D A D  adpcm_sbpro_2   ADPCM Sound Blaster Pro 2-bit
  
   D A D  adpcm_sbpro_3   ADPCM Sound Blaster Pro 2.6-bit
  
   D A D  adpcm_sbpro_4   ADPCM Sound Blaster Pro 4-bit
  
   DEA D  adpcm_swf       ADPCM Shockwave Flash
  
   D A D  adpcm_thp       ADPCM Nintendo Gamecube THP
  
   D A D  adpcm_xa        ADPCM CDROM XA
  
   DEA D  adpcm_yamaha    ADPCM Yamaha
  
   DEA D  alac            ALAC (Apple Lossless Audio Codec)
  
   D A D  als             MPEG-4 Audio Lossless Coding (ALS)
  
   D A D  amrnb           Adaptive Multi-Rate NarrowBand
  
   D A D  amrwb           Adaptive Multi-Rate WideBand
  
   DEV    amv             AMV Video
  
   D V D  anm             Deluxe Paint Animation
  
   D V D  ansi            ASCII/ANSI art
  
   D A D  ape             Monkey's Audio
  
   DES    ass             Advanced SubStation Alpha subtitle
  
   DEV D  asv1            ASUS V1
  
   DEV D  asv2            ASUS V2
  
   D A D  atrac1          Atrac 1 (Adaptive TRansform Acoustic Coding)
  
   D A D  atrac3          Atrac 3 (Adaptive TRansform Acoustic Coding 3)
  
   D V D  aura            Auravision AURA
  
   D V D  aura2           Auravision Aura 2
  
   DEV D  avrp            Avid 1:1 10-bit RGB Packer
  
   D V D  avs             AVS (Audio Video Standard) video
  
   D V D  bethsoftvid     Bethesda VID video
  
   D V D  bfi             Brute Force & Ignorance
  
   D A D  binkaudio_dct   Bink Audio (DCT)
  
   D A D  binkaudio_rdft  Bink Audio (RDFT)
  
   D V    binkvideo       Bink video
  
   D V D  bintext         Binary text
  
   DEV D  bmp             BMP image
  
   D A D  bmv_audio       Discworld II BMV audio
  
   D V    bmv_video       Discworld II BMV video
  
   D V D  c93             Interplay C93
  
   D V D  camstudio       CamStudio
  
   D V D  camtasia        TechSmith Screen Capture Codec
  
   D V D  cavs            Chinese AVS video (AVS1-P2, JiZhun profile)
  
   D V D  cdgraphics      CD Graphics video
  
   D V D  cinepak         Cinepak
  
   DEV D  cljr            Cirrus Logic AccuPak
  
   D A D  cook            COOK
  
   D V D  cyuv            Creative YUV (CYUV)
  
   DEA D  dca             DCA (DTS Coherent Acoustics)
  
   D V D  dfa             Chronomaster DFA
  
   D V    dirac           BBC Dirac VC-2
  
   DEV D  dnxhd           VC3/DNxHD
  
   DEV    dpx             DPX image
  
   D A D  dsicinaudio     Delphine Software International CIN audio
  
   D V D  dsicinvideo     Delphine Software International CIN video
  
   DES    dvbsub          DVB subtitles
  
   DES    dvdsub          DVD subtitles
  
   DEV D  dvvideo         DV (Digital Video)
  
   D V D  dxa             Feeble Files/ScummVM DXA
  
   D V D  dxtory          Dxtory
  
   DEA D  eac3            ATSC A/52 E-AC-3
  
   D V D  eacmv           Electronic Arts CMV video
  
   D V D  eamad           Electronic Arts Madcow Video
  
   D V D  eatgq           Electronic Arts TGQ video
  
   D V    eatgv           Electronic Arts TGV video
  
   D V D  eatqi           Electronic Arts TQI Video
  
   D V D  escape124       Escape 124
  
   D V D  escape130       Escape 130
  
   DEV D  ffv1            FFmpeg video codec #1
  
   DEVSD  ffvhuff         Huffyuv FFmpeg variant
  
   DEA D  flac            FLAC (Free Lossless Audio Codec)
  
   DEV D  flashsv         Flash Screen Video
  
   DEV D  flashsv2        Flash Screen Video Version 2
  
   D V D  flic            Autodesk Animator Flic video
  
   DEVSD  flv             Flash Video (FLV) / Sorenson Spark / Sorenson H.263
  
   D V D  fraps           Fraps
  
   D V D  frwu            Forward Uncompressed
  
   DEA D  g722            G.722 ADPCM
  
   DEA    g723_1          G.723.1
  
   DEA D  g726            G.726 ADPCM
  
   D A D  g729            G.729
  
   DEV D  gif             GIF (Graphics Interchange Format)
  
   D A D  gsm             GSM
  
   D A D  gsm_ms          GSM Microsoft variant
  
   DEV D  h261            H.261
  
   DEVSDT h263            H.263 / H.263-1996
  
   D VSD  h263i           Intel H.263
  
    EV    h263p           H.263+ / H.263-1998 / H.263 version 2
  
   D V D  h264            H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
  
   D V D  h264_vdpau      H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)
  
   DEVSD  huffyuv         Huffyuv / HuffYUV
  
   D V D  idcinvideo      id Quake II CIN video
  
   D V D  idf             iCEDraw text
  
   D V D  iff_byterun1    IFF ByteRun1
  
   D V D  iff_ilbm        IFF ILBM
  
   D A D  imc             IMC (Intel Music Coder)
  
   D V D  indeo2          Intel Indeo 2
  
   D V    indeo3          Intel Indeo 3
  
   D V    indeo4          Intel Indeo Video Interactive 4
  
   D V    indeo5          Intel Indeo Video Interactive 5
  
   D A D  interplay_dpcm  DPCM Interplay
  
   D V D  interplayvideo  Interplay MVE video
  
   DEV    j2k             JPEG 2000
  
   DEV D  jpegls          JPEG-LS
  
   D V D  jv              Bitmap Brothers JV video
  
   D V    kgv1            Kega Game Video
  
   D V D  kmvc            Karl Morton's video codec
  
   D V D  lagarith        Lagarith lossless
  
   DEA D  libgsm          libgsm GSM
  
   DEA D  libgsm_ms       libgsm GSM Microsoft variant
  
    EA    libmp3lame      libmp3lame MP3 (MPEG audio layer 3)
  
   DEA D  libopencore_amrnb OpenCORE Adaptive Multi-Rate (AMR) Narrow-Band
  
   D A D  libopencore_amrwb OpenCORE Adaptive Multi-Rate (AMR) Wide-Band
  
   DEV D  libopenjpeg     OpenJPEG based JPEG 2000 encoder
  
   DEV    libschroedinger libschroedinger Dirac 2.2
  
   DEA D  libspeex        libspeex Speex
  
    EV    libtheora       libtheora Theora
  
    EA    libvorbis       libvorbis Vorbis
  
   DEV    libvpx          libvpx VP8
  
    EV    libx264         libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
  
    EV    libx264rgb      libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 RGB
  
    EV    ljpeg           Lossless JPEG
  
   D V D  loco            LOCO
  
   D A D  mace3           MACE (Macintosh Audio Compression/Expansion) 3:1
  
   D A D  mace6           MACE (Macintosh Audio Compression/Expansion) 6:1
  
   D V D  mdec            Sony PlayStation MDEC (Motion DECoder)
  
   D V D  mimic           Mimic
  
   DEV D  mjpeg           MJPEG (Motion JPEG)
  
   D V D  mjpegb          Apple MJPEG-B
  
   D A D  mlp             MLP (Meridian Lossless Packing)
  
   D V D  mmvideo         American Laser Games MM Video
  
   D V D  motionpixels    Motion Pixels video
  
   D A D  mp1             MP1 (MPEG audio layer 1)
  
   D A D  mp1float        MP1 (MPEG audio layer 1)
  
   DEA D  mp2             MP2 (MPEG audio layer 2)
  
   D A D  mp2float        MP2 (MPEG audio layer 2)
  
   D A D  mp3             MP3 (MPEG audio layer 3)
  
   D A D  mp3adu          ADU (Application Data Unit) MP3 (MPEG audio layer 3)
  
   D A D  mp3adufloat     ADU (Application Data Unit) MP3 (MPEG audio layer 3)
  
   D A D  mp3float        MP3 (MPEG audio layer 3)
  
   D A D  mp3on4          MP3onMP4
  
   D A D  mp3on4float     MP3onMP4
  
   D A D  mpc7            Musepack SV7
  
   D A D  mpc8            Musepack SV8
  
   DEVSDT mpeg1video      MPEG-1 video
  
   D V DT mpeg1video_vdpau MPEG-1 video (VDPAU acceleration)
  
   DEVSDT mpeg2video      MPEG-2 video
  
   DEVSDT mpeg4           MPEG-4 part 2
  
   D V DT mpeg4_vdpau     MPEG-4 part 2 (VDPAU)
  
   D VSDT mpegvideo       MPEG-1 video
  
   D V DT mpegvideo_vdpau MPEG-1/2 video (VDPAU acceleration)
  
   D VSDT mpegvideo_xvmc  MPEG-1/2 video XvMC (X-Video Motion Compensation)
  
   DEVSD  msmpeg4         MPEG-4 part 2 Microsoft variant version 3
  
   D VSD  msmpeg4v1       MPEG-4 part 2 Microsoft variant version 1
  
   DEVSD  msmpeg4v2       MPEG-4 part 2 Microsoft variant version 2
  
   D V D  msrle           Microsoft RLE
  
   DEV D  msvideo1        Microsoft Video-1
  
   D V D  mszh            LCL (LossLess Codec Library) MSZH
  
   D V D  mxpeg           Mobotix MxPEG video
  
   DEA D  nellymoser      Nellymoser Asao
  
   D V D  nuv             NuppelVideo/RTJPEG
  
   DEV D  pam             PAM (Portable AnyMap) image
  
   DEV D  pbm             PBM (Portable BitMap) image
  
   DEA D  pcm_alaw        PCM A-law
  
   D A D  pcm_bluray      PCM signed 16|20|24-bit big-endian for Blu-ray media
  
   D A D  pcm_dvd         PCM signed 20|24-bit big-endian
  
   DEA D  pcm_f32be       PCM 32-bit floating point big-endian
  
   DEA D  pcm_f32le       PCM 32-bit floating point little-endian
  
   DEA D  pcm_f64be       PCM 64-bit floating point big-endian
  
   DEA D  pcm_f64le       PCM 64-bit floating point little-endian
  
   D A D  pcm_lxf         PCM signed 20-bit little-endian planar
  
   DEA D  pcm_mulaw       PCM mu-law
  
   DEA D  pcm_s16be       PCM signed 16-bit big-endian
  
   DEA D  pcm_s16le       PCM signed 16-bit little-endian
  
   D A D  pcm_s16le_planar PCM 16-bit little-endian planar
  
   DEA D  pcm_s24be       PCM signed 24-bit big-endian
  
   DEA D  pcm_s24daud     PCM D-Cinema audio signed 24-bit
  
   DEA D  pcm_s24le       PCM signed 24-bit little-endian
  
   DEA D  pcm_s32be       PCM signed 32-bit big-endian
  
   DEA D  pcm_s32le       PCM signed 32-bit little-endian
  
   DEA D  pcm_s8          PCM signed 8-bit
  
   D A D  pcm_s8_planar   PCM signed 8-bit planar
  
   DEA D  pcm_u16be       PCM unsigned 16-bit big-endian
  
   DEA D  pcm_u16le       PCM unsigned 16-bit little-endian
  
   DEA D  pcm_u24be       PCM unsigned 24-bit big-endian
  
   DEA D  pcm_u24le       PCM unsigned 24-bit little-endian
  
   DEA D  pcm_u32be       PCM unsigned 32-bit big-endian
  
   DEA D  pcm_u32le       PCM unsigned 32-bit little-endian
  
   DEA D  pcm_u8          PCM unsigned 8-bit
  
   D A D  pcm_zork        PCM Zork
  
   DEV D  pcx             PC Paintbrush PCX image
  
   DEV D  pgm             PGM (Portable GrayMap) image
  
   DEV D  pgmyuv          PGMYUV (Portable GrayMap YUV) image
  
   D S    pgssub          HDMV Presentation Graphic Stream subtitles
  
   D V D  pictor          Pictor/PC Paint
  
   DEV D  png             PNG image
  
   DEV D  ppm             PPM (Portable PixelMap) image
  
   DEV D  prores          Apple ProRes
  
   D V D  prores_lgpl     Apple ProRes (iCodec Pro)
  
   D V D  ptx             V.Flash PTX image
  
   D A D  qcelp           QCELP / PureVoice
  
   D A D  qdm2            QDesign Music Codec 2
  
   D V D  qdraw           Apple QuickDraw
  
   D V D  qpeg            Q-team QPEG
  
   DEV D  qtrle           QuickTime Animation (RLE) video
  
   DEV D  r10k            AJA Kona 10-bit RGB Codec
  
   DEV D  r210            Uncompressed RGB 10-bit
  
   DEV    rawvideo        raw video
  
   DEA D  real_144        RealAudio 1.0 (14.4K) encoder
  
   D A D  real_288        RealAudio 2.0 (28.8K)
  
   D V D  rl2             RL2 video
  
   DEA D  roq_dpcm        id RoQ DPCM
  
   DEV D  roqvideo        id RoQ video
  
   D V D  rpza            QuickTime video (RPZA)
  
   DEV D  rv10            RealVideo 1.0
  
   DEV D  rv20            RealVideo 2.0
  
   D V D  rv30            RealVideo 3.0
  
   D V D  rv40            RealVideo 4.0
  
   D A D  s302m           SMPTE 302M
  
   DEV    sgi             SGI image
  
   D A D  shorten         Shorten
  
   D A D  sipr            RealAudio SIPR / ACELP.NET
  
   D A D  smackaud        Smacker audio
  
   D V D  smackvid        Smacker video
  
   D V D  smc             QuickTime Graphics (SMC)
  
   DEV D  snow            Snow
  
   D A D  sol_dpcm        DPCM Sol
  
   DEA D  sonic           Sonic
  
    EA    sonicls         Sonic lossless
  
   D V D  sp5x            Sunplus JPEG (SP5X)
  
   DES    srt             SubRip subtitle
  
   D V D  sunrast         Sun Rasterfile image
  
   DEV D  svq1            Sorenson Vector Quantizer 1 / Sorenson Video 1 / SVQ1
  
   D VSD  svq3            Sorenson Vector Quantizer 3 / Sorenson Video 3 / SVQ3
  
   DEV D  targa           Truevision Targa image
  
   D VSD  theora          Theora
  
   D V D  thp             Nintendo Gamecube THP video
  
   D V D  tiertexseqvideo Tiertex Limited SEQ video
  
   DEV D  tiff            TIFF image
  
   D V D  tmv             8088flex TMV
  
   D A D  truehd          TrueHD
  
   D V D  truemotion1     Duck TrueMotion 1.0
  
   D V D  truemotion2     Duck TrueMotion 2.0
  
   D A D  truespeech      DSP Group TrueSpeech
  
   D A D  tta             True Audio (TTA)
  
   D A D  twinvq          VQF TwinVQ
  
   D V D  txd             Renderware TXD (TeXture Dictionary) image
  
   D V D  ultimotion      IBM UltiMotion
  
   D V D  utvideo         Ut Video
  
   DEV D  v210            Uncompressed 4:2:2 10-bit
  
   D V D  v210x           Uncompressed 4:2:2 10-bit
  
   DEV D  v308            Uncompressed packed 4:4:4
  
   DEV D  v410            Uncompressed 4:4:4 10-bit
  
   D V    vb              Beam Software VB
  
   D V D  vble            VBLE Lossless Codec
  
   D V D  vc1             SMPTE VC-1
  
   D V D  vc1_vdpau       SMPTE VC-1 VDPAU
  
   D V D  vc1image        Windows Media Video 9 Image v2
  
   D V D  vcr1            ATI VCR1
  
   D A D  vmdaudio        Sierra VMD audio
  
   D V D  vmdvideo        Sierra VMD video
  
   D V D  vmnc            VMware Screen Codec / VMware Video
  
   DEA D  vorbis          Vorbis
  
   D VSD  vp3             On2 VP3
  
   D V D  vp5             On2 VP5
  
   D V D  vp6             On2 VP6
  
   D V D  vp6a            On2 VP6 (Flash version, with alpha channel)
  
   D V D  vp6f            On2 VP6 (Flash version)
  
   D V D  vp8             On2 VP8
  
   D V D  vqavideo        Westwood Studios VQA (Vector Quantized Animation) video
  
   D A D  wavesynth       Wave synthesis pseudo-codec
  
   D A D  wavpack         WavPack
  
   D A    wmalossless     Windows Media Audio 9 Lossless
  
   D A D  wmapro          Windows Media Audio 9 Professional
  
   DEA D  wmav1           Windows Media Audio 1
  
   DEA D  wmav2           Windows Media Audio 2
  
   D A D  wmavoice        Windows Media Audio Voice
  
   DEVSD  wmv1            Windows Media Video 7
  
   DEVSD  wmv2            Windows Media Video 8
  
   D V D  wmv3            Windows Media Video 9
  
   D V D  wmv3_vdpau      Windows Media Video 9 VDPAU
  
   D V D  wmv3image       Windows Media Video 9 Image
  
   D V D  wnv1            Winnov WNV1
  
   D A D  ws_snd1         Westwood Audio (SND1)
  
   D A D  xan_dpcm        DPCM Xan
  
   D V D  xan_wc3         Wing Commander III / Xan
  
   D V D  xan_wc4         Wing Commander IV / Xxan
  
   D V D  xbin            eXtended BINary text
  
   D V D  xl              Miro VideoXL
  
   DES    xsub            DivX subtitles (XSUB)
  
   DEV D  xwd             XWD (X Window Dump) image
  
   DEV D  y41p            Uncompressed YUV 4:1:1 12-bit
  
   D V    yop             Psygnosis YOP Video
  
   DEV D  yuv4            Uncompressed packed 4:2:0
  
   DEV D  zlib            LCL (LossLess Codec Library) ZLIB
  
   DEV D  zmbv            Zip Motion Blocks Video

  Library we use to convert :

  public function getAvailableAudioCodecs()
  
      {
  
          return array('libvo_aacenc', 'libfaac', 'libmp3lame');
  
      }

  By default I use 'libmp3lame' now because 'libfaac' is not supported by ffmpeg
  and when Im trying to encode sound by libfaac I'm getting that codec not found

  Thanks in advance !