diff --git a/etc/codecs.conf b/etc/codecs.conf
index bd28f15463..fbdea1e2b4 100644
--- a/etc/codecs.conf
+++ b/etc/codecs.conf
@@ -170,6 +170,7 @@ videocodec m3jpeg
   status working
   fourcc MJPG
   fourcc mjpa,mjpb,mjpg MJPG  ; MOV files
+  fourcc dmb1 MJPG            ; MJPEG by Matrox Rainbow Runner
   driver vfw
   dll "m3jpeg32.dll"
   out YUY2