---
libavutil/frame.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/libavutil/frame.c b/libavutil/frame.c
index f44842a..bc3588d 100644
--- a/libavutil/frame.c
+++ b/libavutil/frame.c
@@ -380,6 +380,20 @@ int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
dst->display_picture_number = src->display_picture_number;
dst->flags = src->flags;
+#if FF_API_INTERLACED_FRAME
+ if (dst->field_state == AV_FRAME_UNKNOWN) {
+ FF_DISABLE_DEPRECATION_WARNINGS
+ if (src->interlaced_frame) {
+ if (src->top_field_first)
+ dst->field_state = AV_FRAME_INTERLACED_TFF;
+ else
+ dst->field_state = AV_FRAME_INTERLACED_BFF;
+ } else
+ dst->field_state = AV_FRAME_PROGRESSIVE;
+ FF_ENABLE_DEPRECATION_WARNINGS
+ }
+#endif
+
memcpy(dst->error, src->error, sizeof(dst->error));
for (i = 0; i < src->nb_side_data; i++) {
--
1.7.9.5
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