flvenc: Don't over-count metadata.

Over-counting occurs if framerate is not set.

Signed-off-by: Anton Khirnov <anton@khirnov.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/libavformat/flvenc.c b/libavformat/flvenc.c
index e87c256694..cc4c782771 100644
--- a/libavformat/flvenc.c
+++ b/libavformat/flvenc.c
@@ -282,7 +282,7 @@ static int flv_write_header(AVFormatContext *s)
     /* mixed array (hash) with size and string/type/data tuples */
     avio_w8(pb, AMF_DATA_TYPE_MIXEDARRAY);
     metadata_count_pos = avio_tell(pb);
-    metadata_count = 5 * !!video_enc +
+    metadata_count = 4 * !!video_enc +
                      5 * !!audio_enc +
                      1 * !!data_enc  +
                      2; // +2 for duration and file size
@@ -308,6 +308,7 @@ static int flv_write_header(AVFormatContext *s)
         if (framerate != 0.0) {
             put_amf_string(pb, "framerate");
             put_amf_double(pb, framerate);
+            metadata_count++;
         }
 
         put_amf_string(pb, "videocodecid");