lavc: deprecate unused me_threshold field

avconv.c

@@ -564,7 +564,6 @@ static void do_video_out(AVFormatContext *s,
             in_picture->top_field_first = !!ost->top_field_first;
 
         in_picture->quality = enc->global_quality;
-        if (!enc->me_threshold)
         in_picture->pict_type = 0;
         if (ost->forced_kf_index < ost->forced_kf_count &&
             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {

libavcodec/avcodec.h

@@ -1608,14 +1608,13 @@ typedef struct AVCodecContext {
      */
     int noise_reduction;
 
+#if FF_API_MPV_OPT
     /**
-     * Motion estimation threshold below which no motion estimation is
-     * performed, but instead the user specified motion vectors are used.
-     *
-     * - encoding: Set by user.
-     * - decoding: unused
+     * @deprecated this field is unused
      */
+    attribute_deprecated
     int me_threshold;
+#endif
 
     /**
      * Macroblock threshold below which the user specified macroblock types will be used.

libavcodec/options_table.h

@@ -320,7 +320,9 @@ static const AVOption avcodec_options[] = {
 #endif
 {"threads", NULL, OFFSET(thread_count), AV_OPT_TYPE_INT, {.i64 = 1 }, 0, INT_MAX, V|E|D, "threads"},
 {"auto", "autodetect a suitable number of threads to use", 0, AV_OPT_TYPE_CONST, {.i64 = 0 }, INT_MIN, INT_MAX, V|E|D, "threads"},
+#if FF_API_MPV_OPT
 {"me_threshold", "motion estimation threshold", OFFSET(me_threshold), AV_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
+#endif
 {"mb_threshold", "macroblock threshold", OFFSET(mb_threshold), AV_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, V|E},
 {"dc", "intra_dc_precision", OFFSET(intra_dc_precision), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, V|E},
 {"nssew", "nsse weight", OFFSET(nsse_weight), AV_OPT_TYPE_INT, {.i64 = 8 }, INT_MIN, INT_MAX, V|E},