Decoding Video using FFMpeg for android

I tried to decode video using FFMpeg library from the sample examples available on internet, i figure it out with new version of ffmpeg, here is the code which I called from my class file,

   private static native int decodeVideo(String filename);
   decodeVideo(getString(R.string._sdcard_abc_3gp));

now in .c file located in JNI dir,I wrote this code,

 jint Java_ru_dzakhov_ffmpeg_test_MainActivity_decodeVideo(JNIEnv* env, jobject
javaThis,jstring filename) {   
  AVFormatContext *pFormatCtx;
  int             i, videoStream;
  AVCodecContext  *pCodecCtx;
  AVCodec         *pCodec;
  AVFrame         *pFrame;
  AVFrame         *pFrameRGB;
  AVPacket        packet;
  int             frameFinished;
  int             numBytes;
  uint8_t         *buffer;

  // Register all formats and codecs
  av_register_all();

  // Open video file

      const jbyte *str;
      str = (*env)->GetStringUTFChars(env, filename, NULL);

      if(av_open_input_file(&pFormatCtx, str, NULL, 0, NULL)!=0)
      {
          LOGI("Can't open file '%s'\n", str);
          return 1;
      }
      else
      {
          LOGI("File is opened\n");
          LOGI("File '%s', Codec %s",pFormatCtx->filename,pFormatCtx->iformat->name);
      }


  // Dump information about file onto standard error

  LOGI("dump_format");
  dump_format(pFormatCtx, 0, filename, 0);
  LOGI("dump_format DONE");
  // Find the first video stream
  videoStream=-1;
  for(i=0; i<pFormatCtx->nb_streams; i++)
    if(pFormatCtx->streams[i]->codec->codec_type==CODEC_TYPE_VIDEO)
      //if(pFormatCtx->streams[i]->codec->codec_type==AVMEDIA_TYPE_VIDEO)
      {
          LOGI("videoStream:: %d",videoStream);
      videoStream=i;
      break;
    }
  if(videoStream==-1)
    return -1; // Didn't find a video stream

  // Get a pointer to the codec context for the video stream
  pCodecCtx=pFormatCtx->streams[videoStream]->codec;

  // Find the