Do not attempt to perform error concealment in lowres mode as this is

not supported currently.

Originally committed as revision 15465 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/error_resilience.c

@@ -680,7 +680,7 @@ void ff_er_frame_end(MpegEncContext *s){
     int size = s->b8_stride * 2 * s->mb_height;
     Picture *pic= s->current_picture_ptr;
 
-    if(!s->error_recognition || s->error_count==0 ||
+    if(!s->error_recognition || s->error_count==0 || s->avctx->lowres ||
        s->error_count==3*s->mb_width*(s->avctx->skip_top + s->avctx->skip_bottom)) return;
 
     if(s->current_picture.motion_val[0] == NULL){