[FFmpeg-devel] [PATCH] avcodec/dvdec: correctly set interlaced and tff
Baptiste Coudurier
baptiste.coudurier at gmail.com
Wed Sep 11 22:30:48 EEST 2019
---
libavcodec/dvdec.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/libavcodec/dvdec.c b/libavcodec/dvdec.c
index 4345cd9e29..cfa0fb9905 100644
--- a/libavcodec/dvdec.c
+++ b/libavcodec/dvdec.c
@@ -592,12 +592,19 @@ static int dvvideo_decode_frame(AVCodecContext *avctx, void *data,
if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
return ret;
- frame.f->interlaced_frame = 1;
- frame.f->top_field_first = 0;
/* Determine the codec's field order from the packet */
if ( *vsc_pack == dv_video_control ) {
- frame.f->top_field_first = !(vsc_pack[3] & 0x40);
+ if (avctx->height == 720) {
+ frame.f->interlaced_frame = 0;
+ frame.f->top_field_first = 0;
+ } else if (avctx->height == 1080) {
+ frame.f->interlaced_frame = 1;
+ frame.f->top_field_first = (vsc_pack[3] & 0x40) == 0x40;
+ } else {
+ frame.f->interlaced_frame = (vsc_pack[3] & 0x10) == 0x10;
+ frame.f->top_field_first = !(vsc_pack[3] & 0x40);
+ }
}
s->buf = buf;
--
2.20.1 (Apple Git-117)
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