avfilter/vf_*_qsv: Fix flags

Reviewed-by: Mark Thompson <sw@jkqxz.net>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavfilter/vf_overlay_qsv.c

@@ -42,7 +42,7 @@
 #define OVERLAY 1
 
 #define OFFSET(x) offsetof(QSVOverlayContext, x)
-#define FLAGS AV_OPT_FLAG_VIDEO_PARAM
+#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM)
 
 enum var_name {
     VAR_MAIN_iW,     VAR_MW,

libavfilter/vf_vpp_qsv.c

@@ -37,7 +37,7 @@
 #include "qsvvpp.h"
 
 #define OFFSET(x) offsetof(VPPContext, x)
-#define FLAGS AV_OPT_FLAG_VIDEO_PARAM
+#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM)
 
 /* number of video enhancement filters */
 #define ENH_FILTERS_COUNT (5)