NTSC - 0xe901 (also seen 0xe9c1, 0xe801)
NTSC 23.98 - 0xe901
-PAL - 0xe909
+PAL - 0xe909 (also seen 0xe9c9 and 0xebe9)
1080p 23.98 - 0xe8ad
1080p 24 - 0xe88b
1080p 25 - 0xe86b
1080i 60 - 0xe80b
720p 50 - 0xe94b (also seen 0xe943)
720p 59.94 - 0xe92d (also seen 0xe925)
-720p 60 - 0xe90b
+720p 60 - 0xe90b (also seen 0xe903)
theories: