Difference between revisions of "Codecs"

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('mp43',      'S-Mpeg 4 version 3', 'MS MP4x', '18')</pre>
 
('mp43',      'S-Mpeg 4 version 3', 'MS MP4x', '18')</pre>
  
 +
'''aom.6 atm''' (speak up!)
 +
* If ''[user]'' (aka 0x01B2) is defined:
 +
:* If it includes 'FFmpeg' or 'Lavc' -> MPG4
 +
:* If it includes 'XviD' -> XviD
 +
:* If it includes 'DivX50' -> DivX5
 +
:* If it includes 'div3' -> DivX3
 +
* If fourcc is defined -> fourcctb
 +
* -> Native (mkv/mp4/etc.)
 
===Trustworthy programs===
 
===Trustworthy programs===
 
*[[AOM]]
 
*[[AOM]]

Revision as of 11:12, 11 May 2006

The information on this page needs to be updated to reflect the current status of AniDB.
Remove this message when done.

When adding video codec data, we don't want the FourCC value, but the actual codec used to encode the video.

Why is that?

Groups often change the FourCC to increase "compatibility" so adding the FourCC is sometimes just wrong. However, many modern groups set/leave it to the correct value, and modern containers (Matroska) have no need for FourCCs anymore.


The following is a table showing the codec detection rules used by AOM, in order: FourCC, Codec, short name of codec, ???

('div3',      'DivX 3 Low-Motion',  'DivX3',    '3'),
('div3/div3', 'DivX 3 Low-Motion',  'DivX3',    '3'),
('div4/div3', 'DivX 3 Fast-Motion', 'DivX3',    '3'),
('div5',      'DivX 5.0',           'DivX5',    '7'),
('dx50',      'DivX 5.0',           'DivX5',    '7'),
('xvid/dx50', 'DivX 5.0',           'DivX5',    '7'),
('divx/dx50', 'DivX 5.0',           'DivX5',    '7'),
('divx',      'DivX 4 (OpenDivX)',  'DivX4',    '5'),
('divx/divx', 'DivX 4 (OpenDivX)',  'DivX4',    '5'),
('DIVX/DIVX', 'XviD',               'XviD',    '17'),
('xvid',      'XviD',               'XviD',    '17'),
('xvid/xvid', 'XviD',               'XviD',    '17'),
('xvid/divx', 'DivX 4 (OpenDivX)',  'DivX4',    '5'),
('mp42',      'S-Mpeg 4 version 2', 'MS MP4x', '18'),
('mp43',      'S-Mpeg 4 version 3', 'MS MP4x', '18')

aom.6 atm (speak up!)

  • If [user] (aka 0x01B2) is defined:
  • If it includes 'FFmpeg' or 'Lavc' -> MPG4
  • If it includes 'XviD' -> XviD
  • If it includes 'DivX50' -> DivX5
  • If it includes 'div3' -> DivX3
  • If fourcc is defined -> fourcctb
  • -> Native (mkv/mp4/etc.)

Trustworthy programs