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| author | Michael Niedermayer <michaelni@gmx.at> | 2003-03-12 15:16:19 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2003-03-12 15:16:19 +0000 |
| commit | 14bea432f16d7c66f9099e427819028b6b4c3bdc (patch) | |
| tree | c52726ce14a0265337b9deebd2214e2552d284b0 /libavformat/yuv4mpeg.c | |
| parent | 586bc7553ca90dee507afd950de64bbd2c6a80b5 (diff) | |
| download | ffmpeg-14bea432f16d7c66f9099e427819028b6b4c3bdc.tar.gz | |
per context frame_rate_base, this should finally fix frame_rate related av sync issues
Originally committed as revision 1666 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavformat/yuv4mpeg.c')
| -rw-r--r-- | libavformat/yuv4mpeg.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/libavformat/yuv4mpeg.c b/libavformat/yuv4mpeg.c index 1659ca7885..2cdaf9b097 100644 --- a/libavformat/yuv4mpeg.c +++ b/libavformat/yuv4mpeg.c @@ -26,7 +26,7 @@ static int yuv4_write_header(AVFormatContext *s) { AVStream *st; int width, height; - int raten, rated, aspectn, aspectd, fps, fps1, n; + int raten, rated, aspectn, aspectd, fps, fps1, n, gcd; char buf[Y4M_LINE_MAX+1]; if (s->nb_streams != 1) @@ -35,9 +35,13 @@ static int yuv4_write_header(AVFormatContext *s) st = s->streams[0]; width = st->codec.width; height = st->codec.height; - + +#if 1 + //this is identical to the code below for exact fps + av_reduce(&raten, &rated, st->codec.frame_rate, st->codec.frame_rate_base, (1UL<<31)-1); +#else fps = st->codec.frame_rate; - fps1 = (((float)fps / FRAME_RATE_BASE) * 1000); + fps1 = (((float)fps / st->codec.frame_rate_base) * 1000); /* Sorry about this messy code, but mpeg2enc is very picky about * the framerates it accepts. */ @@ -75,13 +79,17 @@ static int yuv4_write_header(AVFormatContext *s) rated = 1; break; default: - raten = fps1; /* this setting should work, but often doesn't */ - rated = 1000; + raten = st->codec.frame_rate; /* this setting should work, but often doesn't */ + rated = st->codec.frame_rate_base; + gcd= av_gcd(raten, rated); + raten /= gcd; + rated /= gcd; break; } +#endif aspectn = 1; - aspectd = 1; /* ffmpeg always uses a 1:1 aspect ratio */ + aspectd = 1; /* ffmpeg always uses a 1:1 aspect ratio */ //FIXME not true anymore /* construct stream header, if this is the first frame */ n = snprintf(buf, sizeof(buf), "%s W%d H%d F%d:%d I%s A%d:%d\n", |