}
#define OFFSET(x) offsetof(ProcampVAAPIContext, x)
-#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM)
+#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM)
static const AVOption procamp_vaapi_options[] = {
{ "b", "Output video brightness",
OFFSET(bright), AV_OPT_TYPE_FLOAT, { .dbl = BRIGHTNESS_DEFAULT }, BRIGHTNESS_MIN, BRIGHTNESS_MAX, .flags = FLAGS },