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• How to add libmp3lame, libx264, libvo_aacenc and libvorbis codecs to existing ffmpeg install on Redhat 6.7

  9 avril 2016, par rjn

  Adobe cq uses ffmpeg to transcode videos. There is a workflow that is triggered when a user uploads any video to the digital asset management (DAM) section. This workflow internally uses ffmpeg to transcode the uploaded video and spits out additional video renditions in formats like ogg, m4v, mp3.

  The server (Red Hat Enterprise Linux Server release 6.5) on which adobe cq runs needs to have ffmpeg installed for the DAM workflow to function. ffmpeg has already installed been installed, but it is missing certain codecs : libmp3lame, libx264, libvo_aacenc and libvorbis.

  How to add and enable these codecs ?

• FFMPEG Throws Unexpected Exception

  12 février 2018, par MBJH

  I have this code which works fine until the finally statement is called :

  File cd=new File(path.substring(0, path.lastIndexOf("\\")));
  
          String cmdLine="C:/Program Files/ffmpeg/bin/ffmpeg -i " + path.substring(path.lastIndexOf("\\")+1) + " " + path.substring(path.lastIndexOf("\\")+1, path.lastIndexOf(".")) + "c.mp4";
  
          Process ffmpeg=Runtime.getRuntime().exec(cmdLine, null, cd);
  
              try {
  
                  ffmpeg.getInputStream();
  
                  ffmpeg.waitFor();
  
              } catch(InterruptedException ex) {
  
                  ffmpeg.getErrorStream();
  
                  ex.printStackTrace();
  
              } finally {
  
                  ffmpeg.getOutputStream();
  
                  Update_Delete ud=new Update_Delete(details[0], details[1], details[2]);
  
                  ud.compressed(Integer.parseInt(path.substring(path.lastIndexOf("\\")+5, path.lastIndexOf("\\")+6)));  
  
              }    

  Then it throws this IllegalStateException and I have no idea why.

  Warning:   StandardWrapperValve[addVideo]: Servlet.service() for servlet addVideo threw exception
  
  java.lang.IllegalStateException: This web container has not yet been started
  
      at org.glassfish.web.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1674)
  
      at org.glassfish.web.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1633)
  
      at helpers.video.compressFile(video.java:42)
  
      at SQL.Create.insertIntoVideos(Create.java:94)
  
      at servlets.addVideo.doPost(addVideo.java:39)
  
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
  
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
  
      at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
  
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:344)
  
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
  
      at org.glassfish.tyrus.servlet.TyrusServletFilter.doFilter(TyrusServletFilter.java:305)
  
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
  
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
  
      at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:316)
  
      at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
  
      at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
  
      at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
  
      at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
  
      at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
  
      at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:416)
  
      at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:283)
  
      at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459)
  
      at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167)
  
      at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:206)
  
      at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:180)
  
      at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235)
  
      at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
  
      at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:283)
  
      at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:200)
  
      at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:132)
  
      at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:111)
  
      at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
  
      at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:536)
  
      at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
  
      at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
  
      at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)
  
      at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
  
      at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:591)
  
      at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:571)
  
      at java.lang.Thread.run(Thread.java:745)

  Please tell me why this happened and/or how to fix it. Thanks in advance.

• convert mp4 to hls but with variable segments size

  22 mai 2020, par Pavel Angel Mendoza Villafane

  I saw several examples to change mp4 container to hls using ffmpeg easily with something like this :

  



  ffmpeg -i input.mp4 -profile:v baseline -level 3.0 -s 640x360 -start_number 0 -hls_time 10 -hls_list_size 0 -f hls index.m3u8


  



  I observed that usually the last fragment could be really different with the others (because it is like an offset only). Then I guess that a fix segment length is not mandatory

  



  I have been asking, is it possible to change the size of another fragments ? For example, fix hls_time=10 for all the segments except for segments (1) or (1, 2) such that the length for these to be 5 instead of 10 ?

  



  Is possible ? with ffmpeg or any other ?