[Ffmpeg-devel] [PATCH] lowres chroma bug

[Reimar Döffinger]

Hello,
the attached patch fixes an extreme chroma bug in lowres mode for at
least one MSMPEG4V2 video (probably it's the same as available at
http://www.elephantsdream.org/download/ , not sure though).
Okay to commit?

Greetings,
Reimar D?ffinger
-------------- next part --------------
Index: libavcodec/mpegvideo.c
===================================================================
--- libavcodec/mpegvideo.c	(revision 5610)
+++ libavcodec/mpegvideo.c	(working copy)
@@ -3097,8 +3097,8 @@
     if(!(s->flags&CODEC_FLAG_GRAY)){
         uvsx <<= 2 - lowres;
         uvsy <<= 2 - lowres;
-        pix_op[lowres](dest_cb, ptr_cb, uvlinesize, h >> s->chroma_y_shift, uvsx, uvsy);
-        pix_op[lowres](dest_cr, ptr_cr, uvlinesize, h >> s->chroma_y_shift, uvsx, uvsy);
+        pix_op[lowres-1](dest_cb, ptr_cb, uvlinesize, h >> s->chroma_y_shift, uvsx, uvsy);
+        pix_op[lowres-1](dest_cr, ptr_cr, uvlinesize, h >> s->chroma_y_shift, uvsx, uvsy);
     }
     //FIXME h261 lowres loop filter
 }