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The video and audio codes that Blu-ray disc supports
 

Blu-ray supports:

MPEG-2 -- enhanced for HD, also used for playback of DVDs and HDTV recordings.

MPEG-4 AVC -- part of the MPEG-4 standard also known as H.264 (High Profile and Main Profile).

SMPTE VC-1 -- standard based on Microsoft's Windows Media Video (WMV) technology.

 

The audio codecs Blu-ray supports:

Linear PCM (LPCM) -- up to 8 channels of uncompressed audio. (mandatory)

Dolby TrueHD -- lossless encoding of up to 8 channels of audio. (optional)

Dolby Digital Plus (DD+) -- extension of Dolby Digital, 7.1-channel surround sound. (optional)

Dolby Digital (DD) -- format used for DVDs, 5.1-channel surround sound. (mandatory)

DTS-HD Master Audio -- lossless encoding of up to 8 channels of audio. (optional)

DTS-HD High Resolution Audio -- extension of DTS, 7.1-channel surround sound. (optional)

DTS Digital Surround -- format used for DVDs, 5.1-channel surround sound. (mandatory)

 

NOTE: It only means that all the Blu-ray players and recorder support to playback these video and audio codecs. It still must be up to the concrete film studios to decide which video or audio code (s) they use their release.
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