add outcommented chunk of code to handle stuffing MBs at the end of slices (IMHO the standard doesnt allow this and there are no real world files which need it)

Originally committed as revision 5350 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/h263.c

@@ -4516,6 +4516,12 @@ end:
 
         /* per-MB end of slice check */
     if(s->codec_id==CODEC_ID_MPEG4){
+#if 0 //http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_IEC_14496-4_2004_Conformance_Testing/video_conformance/version_1/simple/ERROR.ZIP/mit025.m4v needs this but its unclear if the mpeg4 standard allows this at all (MN)
+        if(s->pict_type != B_TYPE){
+            while(show_bits(&s->gb, 9 + (s->pict_type == P_TYPE)) == 1)
+                skip_bits(&s->gb, 9 + (s->pict_type == P_TYPE));
+        }
+#endif
         if(mpeg4_is_resync(s)){
             const int delta= s->mb_x + 1 == s->mb_width ? 2 : 1;
             if(s->pict_type==B_TYPE && s->next_picture.mbskip_table[xy + delta])