@@ -332,7 +332,6 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *inpicref)

     AVFrame *out;

     int out_off_left, out_off_right;

     int in_off_left, in_off_right;

-    int ret;

     out = ff_get_video_buffer(outlink, outlink->w, outlink->h);

     if (!out) {

@@ -414,18 +413,14 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *inpicref)

         av_assert0(0);

     }

-    ret = ff_filter_frame(outlink, out);

     av_frame_free(&inpicref);

-    if (ret < 0)

-        return ret;

-    return 0;

+    return ff_filter_frame(outlink, out);

 }

 static const AVFilterPad stereo3d_inputs[] = {

     {

         .name             = "default",

         .type             = AVMEDIA_TYPE_VIDEO,

-        .get_video_buffer = ff_null_get_video_buffer,

         .filter_frame     = filter_frame,

     },

     { NULL }