avfilter/interlace: fix opt flags

libavfilter/vf_interlace.c

@@ -38,16 +38,16 @@
 #include "video.h"
 
 #define OFFSET(x) offsetof(InterlaceContext, x)
-#define V AV_OPT_FLAG_VIDEO_PARAM
+#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
 static const AVOption interlace_options[] = {
     { "scan", "scanning mode", OFFSET(scan),
-        AV_OPT_TYPE_INT,   {.i64 = MODE_TFF }, 0, 1, .flags = V, .unit = "scan" },
+        AV_OPT_TYPE_INT,   {.i64 = MODE_TFF }, 0, 1, .flags = FLAGS, .unit = "scan" },
     { "tff", "top field first", 0,
-        AV_OPT_TYPE_CONST, {.i64 = MODE_TFF }, INT_MIN, INT_MAX, .flags = V, .unit = "scan" },
+        AV_OPT_TYPE_CONST, {.i64 = MODE_TFF }, INT_MIN, INT_MAX, .flags = FLAGS, .unit = "scan" },
     { "bff", "bottom field first", 0,
-        AV_OPT_TYPE_CONST, {.i64 = MODE_BFF }, INT_MIN, INT_MAX, .flags = V, .unit = "scan" },
+        AV_OPT_TYPE_CONST, {.i64 = MODE_BFF }, INT_MIN, INT_MAX, .flags = FLAGS, .unit = "scan" },
     { "lowpass", "set vertical low-pass filter", OFFSET(lowpass),
-        AV_OPT_TYPE_BOOL,  {.i64 = 1 },        0, 1, .flags = V },
+        AV_OPT_TYPE_BOOL,  {.i64 = 1 },        0, 1, .flags = FLAGS },
     { NULL }
 };