@@ -1638,7 +1638,7 @@ static int output_packet(AVInputStream *ist, int ist_index,

                     av_vsrc_buffer_add_frame2(ost->input_video_filter, &picture,

                                              ist->pts,

                                              sar, ist->st->codec->width, ist->st->codec->height,

-                                             ist->st->codec->pix_fmt, "0:0"); //TODO user setable params

+                                             ist->st->codec->pix_fmt, ""); //TODO user setable params

                 }

             }

         }

@@ -35,6 +35,7 @@ typedef struct {

     enum PixelFormat  pix_fmt;

     AVRational        time_base;     ///< time_base to set in the output link

     AVRational        pixel_aspect;

+    char              sws_param[256];

 } BufferSourceContext;

 int av_vsrc_buffer_add_frame2(AVFilterContext *buffer_filter, AVFrame *frame,

@@ -53,6 +54,10 @@ int av_vsrc_buffer_add_frame2(AVFilterContext *buffer_filter, AVFrame *frame,

         //return -1;

     }

+    if(!c->sws_param[0]){

+        snprintf(c->sws_param, 255, "%d:%d:%s", c->w, c->h, sws_param);

+    }

+

     if(width != c->w || height != c->h || pix_fmt != c->pix_fmt){

         AVFilterContext *scale= buffer_filter->outputs[0]->dst;

         AVFilterLink *link;

@@ -67,7 +72,7 @@ int av_vsrc_buffer_add_frame2(AVFilterContext *buffer_filter, AVFrame *frame,

             if(avfilter_open(&scale, f, "Input equalizer") < 0)

                 return -1;

-            if((ret=avfilter_init_filter(scale, sws_param, NULL))<0){

+            if((ret=avfilter_init_filter(scale, c->sws_param, NULL))<0){

                 avfilter_free(scale);

                 return ret;

             }