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• How to use ffmpeg.js in a ReactJS project

  1er septembre 2021, par L3M0L

  My react app is using ffmpeg.wasm (https://github.com/ffmpegwasm/ffmpeg.wasm) but because of the "recent" issues with SharedArrayBuffer I have to move the project to ffmpeg.js (https://github.com/Kagami/ffmpeg.js).

  


  Here is my problem. I installed the library (npm i ffmpeg.js) and tried to use the simple code provided on the github page for the web workers to test if it's working :

  


  const worker = new Worker("ffmpeg-worker-webm.js");
worker.onmessage = function(e) {
  const msg = e.data;
  switch (msg.type) {
  case "ready":
    worker.postMessage({type: "run", arguments: ["-version"]});
    break;
  case "stdout":
    console.log(msg.data);
    break;
  case "stderr":
    console.log(msg.data);
    break;
  case "done":
    console.log(msg.data);
    break;
  }
};


  


  but the onmessage method never get's called, instead I get

  


  GET https://localhost:3000/ffmpeg-worker-webm.js 403 (Forbidden)


  


  I'm new to the web worker topic and I could not find enough articles about this problem to wrap my head around (in fact, most of the articles use the exact same code as I do and apparently it works for them). Is the problem localhost specific or is it a ReactJS problem and I'm not able to use the ffmpeg.js library at all ? Can someone guide me on how to solve this issue ?

  


• avformat/matroskaenc : fix indention level

  26 avril 2014, par Michael Niedermayer

  avformat/matroskaenc : fix indention level
  Fixes CID1206644
  
  Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libavformat/matroskaenc.c

• Cannot include FFmpegMediaPlayer lib in my android project

  20 août 2015, par Lucabro

  I’ve to include in my Android studio project a lib for managing audio streams from urls. I’m tying to use this, but when I try to run the app and it reach the point where have to instantiate a FFmpegMediaPlayer object, it crush with the error

  31444-31444/? E/AndroidRuntime﹕ FATAL EXCEPTION: main
  
      java.lang.ExceptionInInitializerError

  These the steps I’ve done to integrate the lib in my project :

  • I’ve copied all .so, gdb.setup and gdbserver files from demo project and put them into my jniLibs replicating the exact folder structure
  • I’ve copied fmp.jar from demo my libs forlder
  • I’ve changed all paths in gdb.setup files accordingly with my project folder structure
  • synch with gradle

  I’m not an expert of Android specially for tasks like this, am I missing something important ? If you need it I can give a test app

  Thankyou

  Edit 1

  This is the complete error

  08-19 10:20:42.066  31444-31444/? E/AndroidRuntime﹕ FATAL EXCEPTION: main
  
      java.lang.ExceptionInInitializerError
  
              at com.example.lucabrognara.radiostreamprova.RadioActivity.onCreate(RadioActivity.java:126)
  
              at android.app.Activity.performCreate(Activity.java:5206)
  
              at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094)
  
              at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2074)
  
              at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2135)
  
              at android.app.ActivityThread.access$700(ActivityThread.java:140)
  
              at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1237)
  
              at android.os.Handler.dispatchMessage(Handler.java:99)
  
              at android.os.Looper.loop(Looper.java:137)
  
              at android.app.ActivityThread.main(ActivityThread.java:4921)
  
              at java.lang.reflect.Method.invokeNative(Native Method)
  
              at java.lang.reflect.Method.invoke(Method.java:511)
  
              at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1027)
  
              at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:794)
  
              at dalvik.system.NativeStart.main(Native Method)
  
       Caused by: java.lang.UnsatisfiedLinkError: Cannot load library: link_image[1892]:  1836 could not load needed library 'libswresample.so' for 'libavcodec.so' (load_library[1094]: Library 'libswresample.so' not found)
  
              at java.lang.Runtime.load(Runtime.java:340)
  
              at java.lang.System.load(System.java:521)
  
              at wseemann.media.FFmpegMediaPlayer.<clinit>(FFmpegMediaPlayer.java:604)
  
              at com.example.lucabrognara.radiostreamprova.RadioActivity.onCreate(RadioActivity.java:126)
  
              at android.app.Activity.performCreate(Activity.java:5206)
  
              at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094)
  
              at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2074)
  
              at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2135)
  
              at android.app.ActivityThread.access$700(ActivityThread.java:140)
  
              at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1237)
  
              at android.os.Handler.dispatchMessage(Handler.java:99)
  
              at android.os.Looper.loop(Looper.java:137)
  
              at android.app.ActivityThread.main(ActivityThread.java:4921)
  
              at java.lang.reflect.Method.invokeNative(Native Method)
  
              at java.lang.reflect.Method.invoke(Method.java:511)
  
              at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1027)
  
              at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:794)
  
              at dalvik.system.NativeStart.main(Native Method)
  
  </clinit>