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-rw-r--r--libavfilter/vf_tinterlace.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/libavfilter/vf_tinterlace.c b/libavfilter/vf_tinterlace.c
index 683aa0c551..a07c974223 100644
--- a/libavfilter/vf_tinterlace.c
+++ b/libavfilter/vf_tinterlace.c
@@ -256,6 +256,7 @@ static void end_frame(AVFilterLink *inlink)
case 6: /* re-interlace preserving image height, double frame rate */
/* output current frame first */
out = avfilter_ref_buffer(cur, AV_PERM_READ);
+ out->video->interlaced = 1;
avfilter_start_frame(outlink, out);
avfilter_draw_slice(outlink, 0, outlink->h, 1);