diff -r 51f39d0f1466 src/demuxers/demux_mpeg_block.c
--- a/src/demuxers/demux_mpeg_block.c	Mon Apr 30 14:04:50 2007 +0300
+++ b/src/demuxers/demux_mpeg_block.c	Sat May 12 16:06:17 2007 +0300
@@ -175,7 +175,7 @@ static void check_newpts( demux_mpeg_blo
   }
   
   if( pts )
-    this->last_pts[video] = pts;
+    this->last_pts[video] = this->last_pts[1-video] = pts;
 }
 
 static void demux_mpeg_block_parse_pack (demux_mpeg_block_t *this, int preview_mode) {