@@ -162,11 +162,36 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *frame)

     return ff_filter_frame(inlink->dst->outputs[0], frame);

 }

+static int config_props(AVFilterContext *ctx, AVFilterLink *link, int is_out)

+{

+

+    av_log(ctx, AV_LOG_INFO, "config %s time_base: %d/%d, frame_rate: %d/%d\n",

+           is_out ? "out" :"in",

+           link->time_base.num, link->time_base.den,

+           link->frame_rate.num, link->frame_rate.den

+    );

+

+    return 0;

+}

+

+static int config_props_in(AVFilterLink *link)

+{

+    AVFilterContext *ctx = link->dst;

+    return config_props(ctx, link, 0);

+}

+

+static int config_props_out(AVFilterLink *link)

+{

+    AVFilterContext *ctx = link->src;

+    return config_props(ctx, link, 1);

+}

+

 static const AVFilterPad avfilter_vf_showinfo_inputs[] = {

     {

         .name         = "default",

         .type         = AVMEDIA_TYPE_VIDEO,

         .filter_frame = filter_frame,

+        .config_props  = config_props_in,

     },

     { NULL }

 };

@@ -174,7 +199,8 @@ static const AVFilterPad avfilter_vf_showinfo_inputs[] = {

 static const AVFilterPad avfilter_vf_showinfo_outputs[] = {

     {

         .name = "default",

-        .type = AVMEDIA_TYPE_VIDEO

+        .type = AVMEDIA_TYPE_VIDEO,

+        .config_props  = config_props_out,

     },

     { NULL }

 };