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• ffmpeg for x264 core 136 lib in iOS [on hold]

  23 août 2013, par 官承翰

  I want to develop a service (written in php) to provide mobile platforms(iOS/android/..etc) or desktop PCs to stream videos.

  I have tried a lot and found.

  My iPhone4 didn't support core 136 lib based on x264...it would crash or freeze when I tried playing it.

  Here is my question :

  Can ffmpeg decode video so that iOS can play ?
  Or is there another way to solve it ?
  I am new to these things...

  Thanks in advance

• 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 mp3 to aac stream for facebook video with ffmpeg

  17 août 2022, par Miro Barsocchi

  I want to start a live video in a Facebook page and I can do this using ffmpeg. The input is, as a video stream, a static image, suppose image.jpg and as audio a streaming content that currently is in mp3 format.
Due to facebook limitation, the audio format should be aac, so the idea is to convert the audio from mp3 to aac and send everything to facebook. What I'm using is this command

  


  ffmpeg -loop 1 -f image2 -i image.jpg -i https://some.streaming.service/mp3 -c:a libfdk_aac -pix_fmt yuv420p  -profile:v baseline  -bufsize 6000k  -maxrate 1500k  -vcodec libx264  -preset veryfast  -g 30  -r 30  -f flv  -flvflags no_duration_filesize  "rtmps://live-api-s.facebook.com:443/rtmp/FB-KEYTOSTREAM"


  


  where https://some.streaming.service/mp3 is a streaming in mp3 format. It "almost" work in the sense that it returns no error but I can not start streaming because, from facebook side, it seems that I'm not sending the stream : the "Start Live session" is not enabled

  


  

  


  If I stop ffmpeg, then for a second, the button is enabled and I can stream a few seconds of what I want. It seems that the error is related to the fact that there is no buffer of data that arrives, will be converted, and directly sent to the output. If, instead of a mp3 streaming audio, I use a mp3 file then no problem.

  


  I'm quite sure that ffmpeg can do this type of conversion, but can someone help me understand the flag(s) that I'm missing ?

  


  I've tried also with -re with no luck.