func: static void pkt_dump_internal(void *avcl, FILE *f, int level, const AVPacket *pkt,
  
                                int dump_payload, AVRational time_base)
  
  {
  
      HEXDUMP_PRINT("stream #%d:\n", pkt->stream_index);
  
      HEXDUMP_PRINT("  keyframe=%d\n", (pkt->flags & AV_PKT_FLAG_KEY) != 0);
  
      HEXDUMP_PRINT("  duration=%0.3f\n", pkt->duration * av_q2d(time_base));
  
      /* DTS is _always_ valid after av_read_frame() */
  
      HEXDUMP_PRINT("  dts=");
  
      if (pkt->dts == AV_NOPTS_VALUE)
  
          HEXDUMP_PRINT("N/A");
  
      else
  
          HEXDUMP_PRINT("%0.3f", pkt->dts * av_q2d(time_base));
  
      /* PTS may not be known if B-frames are present. */
  
      HEXDUMP_PRINT("  pts=");
  
      if (pkt->pts == AV_NOPTS_VALUE)
  
          HEXDUMP_PRINT("N/A");
  
      else
  
          HEXDUMP_PRINT("%0.3f", pkt->pts * av_q2d(time_base));
  
      HEXDUMP_PRINT("\n");
  
      HEXDUMP_PRINT("  size=%d\n", pkt->size);
  
      if (dump_payload)
  
          av_hex_dump(f, pkt->data, pkt->size);
  
  }
  