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| author | Harry Mallon <harry.mallon@codex.online> | 2020-12-07 10:32:10 +0000 |
|---|---|---|
| committer | Paul B Mahol <onemda@gmail.com> | 2020-12-17 13:02:49 +0100 |
| commit | 6623421454c55890a720b8dd818bb9304e9ff529 (patch) | |
| tree | dd9c0d926dcdefe593a8ade1a6b71b322e530907 /libavcodec | |
| parent | 4bdfbd688fff4450b0e94abb1befe16902a6660b (diff) | |
| download | ffmpeg-6623421454c55890a720b8dd818bb9304e9ff529.tar.gz | |
avcodec/dpx: Read alternative frame rate from television header
Signed-off-by: Harry Mallon <harry.mallon@codex.online>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/dpx.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/libavcodec/dpx.c b/libavcodec/dpx.c index b1833ed9ef..7e3ac0af2e 100644 --- a/libavcodec/dpx.c +++ b/libavcodec/dpx.c @@ -216,10 +216,23 @@ static int decode_frame(AVCodecContext *avctx, else avctx->sample_aspect_ratio = (AVRational){ 0, 1 }; + /* preferred frame rate from Motion-picture film header */ if (offset >= 1724 + 4) { buf = avpkt->data + 1724; i = read32(&buf, endian); - if(i) { + if(i && i != 0xFFFFFFFF) { + AVRational q = av_d2q(av_int2float(i), 4096); + if (q.num > 0 && q.den > 0) + avctx->framerate = q; + } + } + + /* alternative frame rate from television header */ + if (offset >= 1940 + 4 && + !(avctx->framerate.num && avctx->framerate.den)) { + buf = avpkt->data + 1940; + i = read32(&buf, endian); + if(i && i != 0xFFFFFFFF) { AVRational q = av_d2q(av_int2float(i), 4096); if (q.num > 0 && q.den > 0) avctx->framerate = q; |