diff --git a/libavformat/flvenc.c b/libavformat/flvenc.c
index e5270ca320dff5e692644601dc625166f719c7ad..0a45071a156e48073a7a50815af4bdd531b8536a 100644
--- a/libavformat/flvenc.c
+++ b/libavformat/flvenc.c
@@ -163,7 +163,7 @@ static int flv_write_header(AVFormatContext *s)
             if(get_audio_flags(enc)<0)
                 return -1;
         }
-        av_set_pts_info(s->streams[i], 24, 1, 1000); /* 24 bit pts in ms */
+        av_set_pts_info(s->streams[i], 32, 1, 1000); /* 32 bit pts in ms */
     }
     put_tag(pb,"FLV");
     put_byte(pb,1);