---
Now typo-free and with more precise message.
Vittorio

 libavfilter/vf_fieldorder.c |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/libavfilter/vf_fieldorder.c b/libavfilter/vf_fieldorder.c
index 19b07b1..09b78d6 100644
--- a/libavfilter/vf_fieldorder.c
+++ b/libavfilter/vf_fieldorder.c
@@ -101,8 +101,13 @@ static int filter_frame(AVFilterLink *inlink, AVFrame 
*frame)
     uint8_t *data;
 
     if (!frame->interlaced_frame ||
-        frame->top_field_first == s->dst_tff)
+        frame->top_field_first == s->dst_tff) {
+        av_log(ctx, AV_LOG_WARNING,
+               "Skipping %s.\n",
+               frame->interlaced_frame ?
+               "frame with same field order" : "progressive frame");
         return ff_filter_frame(outlink, frame);
+    }
 
     av_dlog(ctx,
             "picture will move %s one line\n",
-- 
1.7.9.5

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