func: static int tmv_read_seek(AVFormatContext *s, int stream_index,
  
                           int64_t timestamp, int flags)
  
  {
  
      TMVContext *tmv = s->priv_data;
  
      int64_t pos;
  
  
  
      if (stream_index)
  
          return -1;
  
  
  
      pos = timestamp *
  
            (tmv->audio_chunk_size + tmv->video_chunk_size + tmv->padding);
  
  
  
      avio_seek(s->pb, pos + TMV_HEADER_SIZE, SEEK_SET);
  
      tmv->stream_index = 0;
  
      return 0;
  
  }
  