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Codecs: Difference between revisions
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When adding videocodecs we don't want the FourCC, but the real used codec. | When adding videocodecs we don't want the FourCC, but the real used codec. | ||
'''Why that?''' | '''Why is that?''' | ||
Groups often change the FourCC to increase "compatibility" so adding the FourCC is just wrong. | 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, ??? <!-- what's the final value? --> | |||
<pre> | <pre> | ||
('div3', 'DivX 3 Low-Motion', 'DivX3', '3'), | ('div3', 'DivX 3 Low-Motion', 'DivX3', '3'), | ||
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('mp43', 'S-Mpeg 4 version 3', 'MS MP4x', '18')</pre> | ('mp43', 'S-Mpeg 4 version 3', 'MS MP4x', '18')</pre> | ||
===Trustworthy | ===Trustworthy programs=== | ||
*[[AOM]] | *[[AOM]] | ||
*[http://virtualdubmod.sourceforge.net/ Virtualdubmod] | *[http://virtualdubmod.sourceforge.net/ Virtualdubmod] | ||
[[Category:Guidelines]] | [[Category:Guidelines]] | ||