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Code Issues Releases Activity

libavformat/mov.c: Handle timecode from tmcd atom in counter mode

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When the timecode value is in counter mode then it is important to use
the timescale and frameduration to calculate the timecode fps.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Jon Morley 2015-01-22 23:04:24 -08:00 committed by Michael Niedermayer
parent 0982077be5
commit 47372caac5
1 changed files with 7 additions and 0 deletions
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7
libavformat/mov.c
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@ -1658,6 +1658,13 @@ static int mov_parse_stsd_data(MOVContext *c, AVIOContext *pb,
st->codec->flags2 |= CODEC_FLAG2_DROP_FRAME_TIMECODE;
st->codec->time_base.den = st->codec->extradata[16]; /* number of frame */
st->codec->time_base.num = 1;
/* adjust for per frame dur in counter mode */
if (tmcd_ctx->tmcd_flags & 0x0008) {
int timescale = AV_RB32(st->codec->extradata + 8);
int framedur = AV_RB32(st->codec->extradata + 12);
st->codec->time_base.den *= timescale;
st->codec->time_base.num *= framedur;
}
if (size > 30) {
uint32_t len = AV_RB32(st->codec->extradata + 18); /* name atom length */
uint32_t format = AV_RB32(st->codec->extradata + 22);