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Old 4th August 2015, 18:31   #517  |  Link
bigotti5
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Join Date: Feb 2005
Posts: 838
Codes for secondary audio are 0xA1 (161) for DD+ secondary audio and 0xA2 (162) for DTS Express, and yes - pure DD+ and DTS Express are allowed for secondary streams only in BD.
Afaik 3D playlists cannot contain PiP so you cant find secondary audio codes in 3D playlists. Secondary streams can exist in corresponding m2ts but they are referenced in (another) 2D playlists only.
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