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• Android java.lang.UnsatisfiedLinkError - couldn't find "libffmpeg.so"

  13 octobre 2016, par Achin

  i have build this project with eclipse https://github.com/youtube/yt-watchme and it is running fine , but when i try to build this project in android studio i am error in my Ffmpeg class ,i have copy all the file from my running demo which i made in eclipse to my android studio project directory , i will post my directory structure and build.gradle , please anyone guide me ? please see the below

  Process: com.google.android.apps.watchme, PID: 6330
  
      java.lang.UnsatisfiedLinkError: dalvik.system.PathClassLoader[DexPathList[[zip file "/data/app/com.google.android.apps.watchme-2/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]] couldn't find "libffmpeg.so"
  
              at java.lang.Runtime.loadLibrary(Runtime.java:366)
  
              at java.lang.System.loadLibrary(System.java:988)
  
              at com.google.android.apps.watchme.Ffmpeg.<clinit>(Ffmpeg.java:22)
  
              at com.google.android.apps.watchme.VideoStreamingConnection.open(VideoStreamingConnection.java:71)
  
              at com.google.android.apps.watchme.StreamerService.startStreaming(StreamerService.java:73)
  
              at com.google.android.apps.watchme.StreamerActivity.startStreaming(StreamerActivity.java:161)
  
              at com.google.android.apps.watchme.StreamerActivity.access$200(StreamerActivity.java:39)
  
              at com.google.android.apps.watchme.StreamerActivity$1.onServiceConnected(StreamerActivity.java:55)
  
              at android.app.LoadedApk$ServiceDispatcher.doConnected(LoadedApk.java:1208)
  
              at android.app.LoadedApk$ServiceDispatcher$RunConnection.run(LoadedApk.java:1225)
  
              at android.os.Handler.handleCallback(Handler.java:739)
  
              at android.os.Handler.dispatchMessage(Handler.java:95)
  
              at android.os.Looper.loop(Looper.java:135)
  
              at android.app.ActivityThread.main(ActivityThread.java:5343)
  
              at java.lang.reflect.Method.invoke(Native Method)
  
              at java.lang.reflect.Method.invoke(Method.java:372)
  
              at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:905)
  
              at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:700)
  
  </clinit>

  

  and in JNI function

  

• "An attempt was made to load a program with an incorrect format"

  31 janvier 2014, par user2922938

  I work in visual studio 2008, when run the program this error is shown :

  $exception "Could not load file or assembly 'AForge.Video.FFMPEG,
  Version=2.2.5.0, Culture=neutral, PublicKeyToken=03563089b1be05dd' or one of its dependencies. An attempt was made to load a program with an incorrect format."

  using System;
  
  using System.Collections.Generic;
  
  using System.ComponentModel;
  
  using System.Data;
  
  using System.Drawing;
  
  using System.Linq;
  
  using System.Text;
  
  using System.Windows.Forms;
  
  using AForge.Video.FFMPEG;
  
  
  
  namespace WindowsFormsApplication9
  
  {
  
      public partial class Form1 : Form
  
      {        
  
          public Form1()
  
          {
  
              InitializeComponent();
  
          }
  
  
  
          private void button1_Click(object sender, EventArgs e)
  
          {
  
              VideoFileReader video = new VideoFileReader();
  
          }
  
      }
  
  }

  What is wrong with my program ?

• FFMPEG - avcodec_decode_video2 return "Invalid frame dimensions 0x0"

  20 octobre 2014, par user3004612

  I am trying to build a simple FFMPEG MPEG2 video PES decoder on ANDROID using the ffmpeg/doc/example/decoding__encoding_8c-source.html.

  I am using FFMPEG version 2.0 !

  I initialize the ffmpeg system with the following code :

  int VideoPlayer::_setupFFmpeg()
  
  {
  
      int rc;
  
      AVCodec *codec;
  
  
  
      av_register_all();
  
      codec = avcodec_find_decoder(AV_CODEC_ID_MPEG2VIDEO);
  
      if(NULL == codec){
  
          LOGE("_setupFFmpeg. No codec!");
  
          return -1;
  
      }
  
      LOGI("found: %p. name: %s", codec, codec->name);
  
  
  
      _video_dec_ctx = avcodec_alloc_context3(codec);
  
      if(NULL == _video_dec_ctx){
  
          LOGE("_setupFFmpeg. Could not allocate codec context space!");
  
          return -1;
  
      }
  
      _video_dec_ctx->debug = FF_DEBUG_PICT_INFO;
  
      if(codec->capabilities & CODEC_CAP_TRUNCATED) _video_dec_ctx->flags |= CODEC_FLAG_TRUNCATED;
  
  
  
      rc = avcodec_open2(_video_dec_ctx, codec, NULL);
  
      if(rc < 0) {
  
          LOGE("_setupFFmpeg. Could not open the codec: %s!", _video_dec_ctx->codec->name);
  
          return -1;
  
      }
  
  
  
      av_init_packet(&_avpkt);
  
  
  
      if(NULL == _video_frame) _video_frame = avcodec_alloc_frame();
  
      if(NULL == _video_frame){
  
          LOGE("_setupFFmpeg. Could not allocate memory for the video frame!");
  
          return -1;
  
      }
  
  
  
      LOGI("_setupFFmpeg(exit)");
  
      return 0;
  
  }

  And then just having a loop that is continuously sending PES packets at the decoder calling this function :

  int VideoPlayer::_playVideoPacket(PesPacket *packet)
  
  {
  
      int len, frameReady;
  
      _avpkt.data = packet->buf;
  
      _avpkt.size = packet->info.bufferSize;
  
      while(_avpkt.size){
  
          len = avcodec_decode_video2(_video_dec_ctx, _video_frame, &frameReady, &_avpkt);
  
          if(len < 0){
  
              LOGE("FFW_decodeVideo");
  
              return len;
  
          }
  
          if(frameReady){
  
              //Draw the picture...
  
          }
  
          _avpkt.size -= len;
  
          _avpkt.data += len;
  
      }
  
      return 1;
  
  }

  But when I run the code I get :
  "Invalid frame dimensions 0x0" error from FFMPEG after calling avcodec_decode_video2().

  It seems that I am not setting up the codec correctly. The MpegEncContext in Mpeg1Context in mpeg12dec.c is not setup correctly. What do I have to do to setup MpegEncContext correctly ?