Fix muxing mjpeg in swf.

(cherry picked from commit 7923490712)
2012-09-13 09:26:55 +02:00
parent 9eaec5b8f0
commit 09a278fdd1
1 changed files with 2 additions and 0 deletions
--- a/libavformat/swfenc.c
+++ b/libavformat/swfenc.c
@@ -496,8 +496,10 @@ static int swf_write_trailer(AVFormatContext *s)
        put_le32(pb, file_size);
        url_fseek(pb, swf->duration_pos, SEEK_SET);
        put_le16(pb, swf->video_frame_number);
+        if (swf->vframes_pos) {
        url_fseek(pb, swf->vframes_pos, SEEK_SET);
        put_le16(pb, swf->video_frame_number);
+        }
        url_fseek(pb, file_size, SEEK_SET);
    }
    return 0;