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• java.lang.UnsatisfiedLinkError : dlopen failed : cannot locate symbol "av_bsf_next" referenced by "/lib/arm/libffmpeg.so"

  21 octobre 2019, par Sushrita

  I have a third party library which has ffmpeg as dependency and i am getting this error while executing a thread.

   Process: com.joe.epmediademo, PID: 11906
  
      java.lang.UnsatisfiedLinkError: dlopen failed: cannot locate symbol "av_bsf_next" referenced by "/data/app/com.joe.epmediademo-U-buiUc64rYJquAlCAhK5A==/lib/arm/libffmpeg.so"...
  
          at java.lang.Runtime.loadLibrary0(Runtime.java:1016)
  
          at java.lang.System.loadLibrary(System.java:1657)
  
          at Jni.FFmpegCmd.<clinit>(FFmpegCmd.java:24)
  
          at Jni.FFmpegCmd.exec(FFmpegCmd.java:73)
  
          at VideoHandle.EpEditor.execCmd(EpEditor.java:571)
  
          at VideoHandle.EpEditor.exec(EpEditor.java:135)
  
          at com.joe.epmediademo.Activity.EditActivity.execVideo(EditActivity.java:182)
  
          at com.joe.epmediademo.Activity.EditActivity.onClick(EditActivity.java:106)
  
          at android.view.View.performClick(View.java:6297)
  
          at android.view.View$PerformClick.run(View.java:24797)
  
          at android.os.Handler.handleCallback(Handler.java:790)
  
          at android.os.Handler.dispatchMessage(Handler.java:99)
  
          at android.os.Looper.loop(Looper.java:164)
  
          at android.app.ActivityThread.main(ActivityThread.java:6626)
  
          at java.lang.reflect.Method.invoke(Native Method)
  
          at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
  
          at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:811)
  
  </clinit>

• RTSP stream exited with error" : Connection timed out

  21 février 2020, par fw08

  I am building an web application on AWS Cloud that requires to stream a recorded/live video over the global network. I purchased an IP camera(GV-AVD4710) and NVR(GV-SNVR0811) for our application. In future I need to stream no. of cameras on my application.

  While Camera in use With NVR, I have connected the NVR in our local network and the camera at channel_1 of NVR. Now the lets assume NVR is getting an IP of 192.168.1.203. So for rtsp streaming URL for channel_1 will be "rtsp://id:password@192.168.1.203:554/ch1" as per manufacturer’s specification. For camera streaming I am using "ffmpeg" multimedia framework (https://github.com/xpcrts/Steaming-IP-Camera-Nodejs ). So it is working fine. I tested it and working well in local network. Code that is running on the server

  Stream = require('node-rtsp-stream')
  
  stream = new Stream({
  
      name: 'name',
  
      streamUrl: 'rtsp://ID:PASSWORD@abcxyz.com:554/ch1',
  
      wsPort:3000,
  
      ffmpegOptions: {
  
          '-stats': '',
  
          '-r': 30
  
      }
  
  })

  and Code running at client side which is independent of any plug-ins

  <div>
  
         <canvas width="auto" height="auto"></canvas>
  
         <code class="echappe-js">&lt;script type=&quot;text/javascript&quot; src='http://stackoverflow.com/feeds/tag/jsmpeg.min.js'&gt;&lt;/script&gt;
         
  &lt;script type=&quot;text/javascript&quot;&gt;<br />
  
              var canvas = document.getElementById('chanel1');<br />
  
              var websocket = new WebSocket(&quot;ws://34.202.222.188:3000&quot;);<br />
  
              var player= new jsmpeg(websocket, {canvas:canvas, autoplay:true, loop:true})<br />
  
         &lt;/script&gt;
  

  When I made this IP address available for public, and then the problem begins. It is not working and giving an error :

   "[tcp @ 0x563911f0a340] Connection to tcp://192.168.1.205:554?timeout=0 failed: Connection timed out
  
  rtsp://admin:admin@192.168.1.205: Connection timed out RTSP stream exited with error"

  In Camera Without NVR, I connected camera directly to our local network and so got an rtsp url like rtsp ://id:password@192.168.1.205/media/video1. Same happens again. Works well in local, but not working when I am making this available on public network.

  How can stream video over global network ? Is it possible to implement these logic using ffmpeg multimedia framework ? Does VLC can help in these cases ?

  I would like to reiterate that, In future there are no. of cameras needs to be stream.