diff --git a/libav/avformat.h b/libav/avformat.h
index 3b20a2d335332495560111d8f98481c037ec99b7..c982336f42828fde716cccf024f8e82b322af424 100644
--- a/libav/avformat.h
+++ b/libav/avformat.h
@@ -76,6 +76,7 @@ typedef struct AVFormat {
 typedef struct AVStream {
     int id;       /* internal stream id */
     AVCodecContext codec; /* codec context */
+    int r_frame_rate;     /* real frame rate of the stream */
     void *priv_data;
 } AVStream;
 
diff --git a/libav/mpeg.c b/libav/mpeg.c
index 91136e6091963be4ef8dc32364ff2f8f2e1fdd45..6443b18bb39fac1ae700a14bb72444e020ec942f 100644
--- a/libav/mpeg.c
+++ b/libav/mpeg.c
@@ -376,6 +376,10 @@ static int mpeg_mux_write_packet(AVFormatContext *ctx, int stream_index,
     }
 
     stream->pts += ticker_tick(&stream->pts_ticker, 1);
+    //if (st->codec.codec_type == CODEC_TYPE_VIDEO)
+    //    fprintf(stderr,"\nVideo PTS: %6lld", stream->pts);
+    //else
+    //    fprintf(stderr,"\nAudio PTS: %6lld", stream->pts);
     return 0;
 }