If r_frame_rate is set, it should be more reliable for this than either
codec or stream timebase.
---
libavformat/utils.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/libavformat/utils.c b/libavformat/utils.c
index 2b378ab..29eaf1b 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -826,7 +826,10 @@ static void compute_frame_duration(int *pnum, int *pden,
AVStream *st,
*pden = 0;
switch(st->codec->codec_type) {
case AVMEDIA_TYPE_VIDEO:
- if(st->time_base.num*1000LL > st->time_base.den){
+ if (st->r_frame_rate.num) {
+ *pnum = st->r_frame_rate.den;
+ *pden = st->r_frame_rate.num;
+ } else if(st->time_base.num*1000LL > st->time_base.den) {
*pnum = st->time_base.num;
*pden = st->time_base.den;
}else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){
--
1.7.7.1
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