This replaces the I422 entry as it doesn't seem correct,
and there is another entry for I422 in the table anyway.
Without this, one can't select YUY2 with VLC.
(You set v4l-chroma=YUY2 in vlcrc).

--- v4l.c	2005-10-10 09:26:34.000000000 +0000
+++ v4l-yuy2.c	2006-07-17 13:33:40.000000000 +0000
@@ -234,7 +234,7 @@
     { VIDEO_PALETTE_RGB555, VLC_FOURCC( 'R', 'V', '1', '5' ) },
     { VIDEO_PALETTE_RGB24, VLC_FOURCC( 'R', 'V', '2', '4' ) },
     { VIDEO_PALETTE_RGB32, VLC_FOURCC( 'R', 'V', '3', '2' ) },
-    { VIDEO_PALETTE_YUV422, VLC_FOURCC( 'I', '4', '2', '2' ) },
+    { VIDEO_PALETTE_YUV422, VLC_FOURCC( 'Y', 'U', 'Y', '2' ) },
     { VIDEO_PALETTE_YUYV, VLC_FOURCC( 'Y', 'U', 'Y', 'V' ) },
     { VIDEO_PALETTE_UYVY, VLC_FOURCC( 'U', 'Y', 'V', 'Y' ) },
     { VIDEO_PALETTE_YUV420, VLC_FOURCC( 'I', '4', '2', 'N' ) },