[FFmpeg-cvslog] nutdec: sanity check r_frame_rate

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Tue Dec 18 04:05:44 2012 +0100| [ebfb738fa4b0dcefb14586be5d1dc0b44c91d6c2] | committer: Michael Niedermayer

nutdec: sanity check r_frame_rate

This fixes files that store a somewhat incorrect value.

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ebfb738fa4b0dcefb14586be5d1dc0b44c91d6c2
---

 libavformat/nutdec.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavformat/nutdec.c b/libavformat/nutdec.c
index ac3ef7d..f260a3e 100644
--- a/libavformat/nutdec.c
+++ b/libavformat/nutdec.c
@@ -522,6 +522,8 @@ static int decode_info_header(NUTContext *nut)
 
             if (stream_id_plus1 && !strcmp(name, "r_frame_rate")) {
                 sscanf(str_value, "%d/%d", &st->r_frame_rate.num, &st->r_frame_rate.den);
+                if (st->r_frame_rate.num >= 1000LL*st->r_frame_rate.den)
+                    st->r_frame_rate.num = st->r_frame_rate.den = 0;
                 continue;
             }