Avdump/AR

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AniDB AR Def

1.33:1 (4:3)	10
1.77:1 (16:9)	20
1.66:1	30
1.85:1	40
2.00:1	50
2.21:1	60
2.35:1	70

By resolution

These are used by the auto creqer (except rare/uncommon obviously). Also see Avdump/Resolution.

4:3

320 x 240
352 x 240 (non-square pixels), native NTSC Video CD - common (nwa)
352 x 288 (non-square pixels), native PAL Video CD - common (nwa)
384 x 288 (pelican)
512 x 368
512 x 384
576 x 432
640 x 480
720 x 540

16:9

640 x 352
640 x 360
640 x 368 (pelican)
704 x 384
704 x 392
704 x 396
704 x 400
720 x 400 (nwa: a bit off from actual 16:9, probably kept for mod16)
1024 x 576 (common under the tards)
1280 x 720
1920 x 1080
1920 x 1088

Anamorphic/wrong AR

704 x 480 NTSC DVD
720 x 480 NTSC DVD
720 x 576 PAL DVD

To be added?

848 x 480 16:9 - common for hell knows why... (nwa)
960 x 540 16:9
853 x 480 16:9 - common display resolution for anamorphic .mkv from 704x480 & 720x480 (nwa)

Rare/uncommon (unused)

480 x 360 4:3 - wouldn't call that common though
704 x 528 4:3 - ugh
800 x 448 16:9 - common?

480 x 320 3:2 HVGA (Computer Standard) - uncommon (nwa)
480 x 480 4:3 (non-square pixels), native NTSC SVCD - not that common (nwa)
480 x 576 4:3 (non-square pixels), native PAL SVCD - uncommon (nwa)
640 x 288 2.2:1 - a rather rarely used AR (nwa)
640 x 350 64:35 (approx. 9:5) EGA (Computer Standard) - rare (nwa)
720 x 432 1.66:1 (5:3) 35 mm European widescreen standard - rare (nwa)
800 x 600 4:3 SVGA (Computer Standard) - uncommon (nwa)
1024 x 768 4:3 XGA (Computer Standard) - rare (nwa)

MPEG-1 Standard

   1,
   0.6735,
   0.7031, //16/9 PAL
   0.7615,
   0.8055,
   0.8437, //16/9 NTSC
   0.8935,
   0.9157, //4/3 PAL
   0.9815,
   1.0255,
   1.0695,
   1.0950, //4/3 NTSC
   1.1575,
   1.2015,

MPEG-2 Standard

   1,
   4/3,
   16/9,
   2.21,

Sample Data

See Avdump/Resolution for the actual resolutions.

AR      count(*)
------  --------------------------
{null}	20223 (resolution not set)
0.66	1
0.67	40
0.75	1
0.76	1
0.79	2
0.83	18
0.93	1
0.94	6
0.95	42
0.96	2
1.00	182
1.06	2
1.07	2
1.08	1
1.10	2
1.11	1
1.16	2
1.17	4
1.18	30
1.19	5
1.20	10
1.21	54
1.22	977
1.23	87
1.24	69
1.25	625
1.26	146
1.27	134
1.28	81
1.29	370
1.30	659
1.31	1273
1.32	845
1.33	106965
1.34	743
1.35	571
1.36	2494
1.37	180
1.38	1041
1.39	450
1.40	70
1.41	119
1.42	155
1.43	267
1.44	104
1.45	127
1.46	114
1.47	3754
1.48	733
1.49	189
1.50	2700
1.51	48
1.52	84
1.53	38
1.54	63
1.55	16
1.56	55
1.57	9
1.58	11
1.59	3
1.60	84
1.61	7
1.62	2
1.63	11
1.64	21
1.65	9
1.66	10
1.67	103
1.68	77
1.69	43
1.70	8
1.71	32
1.72	17
1.73	196
1.74	582
1.75	69
1.76	532
1.77	436
1.78	14894
1.79	316
1.80	1019
1.81	156
1.82	2928
1.83	978
1.84	45
1.85	124
1.86	73
1.87	20
1.88	165
1.89	34
1.90	187
1.91	56
1.92	6
1.93	2
1.95	23
1.96	62
1.97	4
1.98	15
1.99	22
2.00	120
2.01	3
2.02	4
2.03	1
2.04	1
2.05	54
2.06	5
2.07	2
2.08	1
2.09	3
2.10	10
2.11	1
2.13	2
2.14	1
2.15	1
2.17	3
2.19	1
2.20	2
2.22	7
2.25	4
2.27	1
2.31	9
2.32	12
2.33	4
2.35	16
2.36	2
2.37	8
2.38	1
2.40	2
2.43	1
2.44	2
2.50	3