@@ -281,13 +281,19 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)

     HueContext *hue = inlink->dst->priv;

     AVFilterLink *outlink = inlink->dst->outputs[0];

     AVFrame *outpic;

+    int direct = 0;

+    if (av_frame_is_writable(inpic)) {

+        direct = 1;

+        outpic = inpic;

+    } else {

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

     if (!outpic) {

         av_frame_free(&inpic);

         return AVERROR(ENOMEM);

     }

     av_frame_copy_props(outpic, inpic);

+    }

     if (!hue->flat_syntax) {

         hue->var_values[VAR_T]   = TS2T(inpic->pts, inlink->time_base);

@@ -321,6 +327,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)

     hue->var_values[VAR_N] += 1;

+    if (!direct)

     av_image_copy_plane(outpic->data[0], outpic->linesize[0],

                         inpic->data[0],  inpic->linesize[0],

                         inlink->w, inlink->h);

@@ -330,6 +337,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)

                         inlink->w >> hue->hsub, inlink->h >> hue->vsub,

                         hue->hue_cos, hue->hue_sin);

+    if (!direct)

     av_frame_free(&inpic);

     return ff_filter_frame(outlink, outpic);

 }