MicroDVD has a "hack" for specifying the video framerate the subtitle
was authored against. The demuxer reads this hint correctly, but didn't
skip it correctly.

This was not noticed, because the exported packet has its duration set
to 0, making it invisible (depending on the API user's rendering logic).
---
 libavformat/microdvddec.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavformat/microdvddec.c b/libavformat/microdvddec.c
index ce3433c..a383905 100644
--- a/libavformat/microdvddec.c
+++ b/libavformat/microdvddec.c
@@ -112,6 +112,7 @@ static int microdvd_read_header(AVFormatContext *s)
                 && frame <= 1 && fps > 3 && fps < 100) {
                 pts_info = av_d2q(fps, 100000);
                 has_real_fps = 1;
+                continue;
             }
             if (!st->codec->extradata && sscanf(line, "{DEFAULT}{}%c", &c) == 
1) {
                 st->codec->extradata = av_strdup(line + 11);
-- 
2.1.4

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