This one actually works with hd1080 y4m files when seeking backwards.
Signed-off-by: Paul B Mahol <[email protected]>
---
libavformat/yuv4mpegdec.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/libavformat/yuv4mpegdec.c b/libavformat/yuv4mpegdec.c
index 8662a42a4c..de3d5637fe 100644
--- a/libavformat/yuv4mpegdec.c
+++ b/libavformat/yuv4mpegdec.c
@@ -317,11 +317,9 @@ static int yuv4_read_seek(AVFormatContext *s, int
stream_index,
AVStream *st = s->streams[0];
int64_t pos;
- pos = av_rescale_rnd(pts * s->packet_size,
- st->time_base.num,
- st->time_base.den * s->packet_size,
- (flags & AVSEEK_FLAG_BACKWARD) ? AV_ROUND_DOWN :
AV_ROUND_UP);
- pos *= s->packet_size;
+ if (flags & AVSEEK_FLAG_BACKWARD)
+ pts -= 1;
+ pos = pts * s->packet_size;
if (avio_seek(s->pb, pos + s->internal->data_offset, SEEK_SET) < 0)
return -1;
--
2.11.0
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