diff --git a/etc/codecs.conf b/etc/codecs.conf
index 1abeab40ab..8b0ff9706e 100644
--- a/etc/codecs.conf
+++ b/etc/codecs.conf
@@ -239,6 +239,7 @@ videocodec ffdivx
   fourcc DIV3,div3,DIV4,div4
   fourcc AP41 div3	  ; AngelPotion stuff
   fourcc COL1,col1,COL0,col0 ; Cool codec (based on mpg4ds32.ax)
+  fourcc 3IVD,3ivd    ; divxdoctored files (3ivx.com) 
   driver ffmpeg
   dll msmpeg4
   out YV12,I420,IYUV
@@ -281,6 +282,7 @@ videocodec ffodivx
   fourcc mp4v
   format 0x4
   fourcc UMP4
+  fourcc 3IV2,3iv2  ; 3ivx Delta 4   
   driver ffmpeg
   dll mpeg4 ;opendivx
   out YV12,I420,IYUV