demux: asf: only apply valid A/R

refs #11063

modules/demux/asf/asf.c

@@ -657,17 +657,21 @@ static void ParsePayloadExtensions(demux_t *p_demux, asf_track_t *tk,
             uint8_t i_ratio_x = *p_data;
             uint8_t i_ratio_y = *(p_data + 1);
             if ( tk->p_fmt->video.i_sar_num != i_ratio_x || tk->p_fmt->video.i_sar_den != i_ratio_y )
+            {
+                /* Only apply if origin pixel size >= 1x1, due to broken yacast */
+                if ( tk->p_fmt->video.i_height * i_ratio_x > tk->p_fmt->video.i_width * i_ratio_y )
                 {
                     vout_thread_t *p_vout = input_GetVout( p_demux->p_input );
                     if ( p_vout )
                     {
                         msg_Info( p_demux, "Changing aspect ratio to %i/%i", i_ratio_x, i_ratio_y );
-                    tk->p_fmt->video.i_sar_num = i_ratio_x;
-                    tk->p_fmt->video.i_sar_den = i_ratio_y;
                         vout_ChangeAspectRatio( p_vout, i_ratio_x, i_ratio_y );
                         vlc_object_release( p_vout );
                     }
                 }
+                tk->p_fmt->video.i_sar_num = i_ratio_x;
+                tk->p_fmt->video.i_sar_den = i_ratio_y;
+            }
         }
         i_length -= i_payload_extensions_size;
         p_data += i_payload_extensions_size;