[FFmpeg-cvslog] lavf: estimate frame duration from r_frame_rate.
Anton Khirnov
git at videolan.org
Thu Dec 1 03:02:40 CET 2011
ffmpeg | branch: master | Anton Khirnov <anton at khirnov.net> | Mon Nov 28 10:02:21 2011 +0100| [2092232581468e3d656805e2b0effd14092dc6f5] | committer: Anton Khirnov
lavf: estimate frame duration from r_frame_rate.
If r_frame_rate is set, it should be more reliable for this than either
codec or stream timebase.
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=2092232581468e3d656805e2b0effd14092dc6f5
---
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){
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