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avformat/utils: use r_frame_rate only in the demuxer for ff_compute_frame_duration()

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This is primarly to maintain current behavior when r_frame_rate is set for muxers
and could be reverted if it has some advantage

Fixes Ticket3629 part1

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-12-14 01:36:29 +01:00
parent d823edee8d
commit add46edf33
1 changed files with 1 additions and 1 deletions
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2
libavformat/utils.c
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@ -745,7 +745,7 @@ void ff_compute_frame_duration(AVFormatContext *s, int *pnum, int *pden, AVStrea
*pden = 0;
switch (st->codec->codec_type) {
case AVMEDIA_TYPE_VIDEO:
if (st->r_frame_rate.num && !pc) {
if (st->r_frame_rate.num && !pc && s->iformat) {
*pnum = st->r_frame_rate.den;
*pden = st->r_frame_rate.num;
} else if (st->time_base.num * 1000LL > st->time_base.den) {