@@ -1905,7 +1905,7 @@ static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const c

     char sws_flags_str[512] = "";

     char buffersrc_args[256];

     int ret;

-    AVFilterContext *filt_src = NULL, *filt_out = NULL, *last_filter = NULL;

+    AVFilterContext *filt_src = NULL, *filt_out = NULL, *head_filter, *last_filter = NULL;

     AVCodecContext *codec = is->video_st->codec;

     AVRational fr = av_guess_frame_rate(is->ic, is->video_st, NULL);

     AVDictionaryEntry *e = NULL;

@@ -1945,6 +1945,7 @@ static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const c

         goto fail;

     last_filter = filt_out;

+    head_filter = filt_src;

 /* Note: this macro adds a filter before the lastly added filter, so the

  * processing order of the filters is in reverse */

@@ -1957,11 +1958,11 @@ static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const c

     if (ret < 0)                                                             \

         goto fail;                                                           \

                                                                              \

-    ret = avfilter_link(filt_ctx, 0, last_filter, 0);                        \

+    ret = avfilter_link(head_filter, 0, filt_ctx, 0);                        \

     if (ret < 0)                                                             \

         goto fail;                                                           \

                                                                              \

-    last_filter = filt_ctx;                                                  \

+    head_filter = filt_ctx;                                                  \

 } while (0)

     /* SDL YUV code is not handling odd width/height for some driver

@@ -1985,7 +1986,7 @@ static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const c

         }

     }

-    if ((ret = configure_filtergraph(graph, vfilters, filt_src, last_filter)) < 0)

+    if ((ret = configure_filtergraph(graph, vfilters, head_filter, last_filter)) < 0)

         goto fail;

     is->in_video_filter  = filt_src;