@@ -965,23 +965,17 @@ static int draw_text(AVFilterContext *ctx, AVFilterBufferRef *picref,

     return 0;

 }

-static int null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)

-{

-    return 0;

-}

-

-static int end_frame(AVFilterLink *inlink)

+static int filter_frame(AVFilterLink *inlink, AVFilterBufferRef *frame)

 {

     AVFilterContext *ctx = inlink->dst;

     AVFilterLink *outlink = ctx->outputs[0];

     DrawTextContext *dtext = ctx->priv;

-    AVFilterBufferRef *picref = inlink->cur_buf;

     int ret;

-    dtext->var_values[VAR_T] = picref->pts == AV_NOPTS_VALUE ?

-        NAN : picref->pts * av_q2d(inlink->time_base);

+    dtext->var_values[VAR_T] = frame->pts == AV_NOPTS_VALUE ?

+        NAN : frame->pts * av_q2d(inlink->time_base);

-    draw_text(ctx, picref, picref->video->w, picref->video->h);

+    draw_text(ctx, frame, frame->video->w, frame->video->h);

     av_log(ctx, AV_LOG_DEBUG, "n:%d t:%f text_w:%d text_h:%d x:%d y:%d\n",

            (int)dtext->var_values[VAR_N], dtext->var_values[VAR_T],

@@ -990,10 +984,7 @@ static int end_frame(AVFilterLink *inlink)

     dtext->var_values[VAR_N] += 1.0;

-    if ((ret = ff_draw_slice(outlink, 0, picref->video->h, 1)) < 0 ||

-        (ret = ff_end_frame(outlink)) < 0)

-        return ret;

-    return 0;

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

 }

 static const AVFilterPad avfilter_vf_drawtext_inputs[] = {

@@ -1001,9 +992,7 @@ static const AVFilterPad avfilter_vf_drawtext_inputs[] = {

         .name             = "default",

         .type             = AVMEDIA_TYPE_VIDEO,

         .get_video_buffer = ff_null_get_video_buffer,

-        .start_frame      = ff_null_start_frame,

-        .draw_slice       = null_draw_slice,

-        .end_frame        = end_frame,

+        .filter_frame     = filter_frame,

         .config_props     = config_input,

         .min_perms        = AV_PERM_WRITE |

                             AV_PERM_READ,