Index: libmpcodecs/vd_ffmpeg.c
===================================================================
--- libmpcodecs/vd_ffmpeg.c	(Revision 22268)
+++ libmpcodecs/vd_ffmpeg.c	(Arbeitskopie)
@@ -51,6 +51,7 @@
     double inv_qp_sum;
     int ip_count;
     int b_count;
+    AVRational last_sample_aspect_ratio;
 } vd_ffmpeg_ctx;
 
 //#ifdef USE_LIBPOSTPROC
@@ -498,16 +499,17 @@
     
      // it is possible another vo buffers to be used after vo config()
      // lavc reset its buffers on width/heigh change but not on aspect change!!!
-    if (// aspect != ctx->last_aspect ||
+    if (av_cmp_q(avctx->sample_aspect_ratio, ctx->last_sample_aspect_ratio) ||
 	width != sh->disp_w  ||
 	height != sh->disp_h ||
 	pix_fmt != ctx->pix_fmt ||
 	!ctx->vo_inited)
     {
 	mp_msg(MSGT_DECVIDEO, MSGL_V, "[ffmpeg] aspect_ratio: %f\n", aspect);
+	ctx->last_sample_aspect_ratio = avctx->sample_aspect_ratio;
         ctx->last_aspect = aspect;
 //	if(ctx->last_aspect>=0.01 && ctx->last_aspect<100)
-	if(sh->aspect==0.0)
+//	if(sh->aspect==0.0)
 	    sh->aspect = ctx->last_aspect;
 	sh->disp_w = width;
 	sh->disp_h = height;