In main folder of DD there is a file called codecs.ini
each cocdec definition consists of four lines of text
first line of each definition specifies the type of codec for mpg2 it is for example
where 16 is the unique number so if there are already 41 mpg2 codecs in your ini file the one You want to add shoud start with line [VIDEO-MPEG-CODEC42] the number after CODEC must be unique for each codec of selected type!
next line is
where Codec name is a descriptive name of the codec displayed by DD to the user on selection screen
third line is harder to setup
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CLSID={212690FB-83E5-4526-8FD7-74478B7939CD}
where {..} part is the clsid identyfying the codec You can get it from graphedit. Run this app then hit Ctrl+F then search for codecs under direct show filters the required part of info is surrounded with red frame (Microsoft MPG Decoder taken as example Win7 native)
the last line is optional and is of form
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DESC=Any comment You want to be displayed by DD when codec is selected
the text after = is any text You want
For h264 codecs first line is of this form [VIDEO-H264-CODEC1]
For audio:
mpg2 [AUDIO-MPEG-CODEC1]
AC3 [AUDIO-AC3-CODEC1]
AAC/mpg4 [AUDIO-AAC-CODEC1]
Thats all :>