Talk:Microsoft IMA ADPCM

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Maybe I am wrong, but according to the Microsoft WAVE AVI Codec registry on the IETF, the Audio ID here should be 0x0002 and not 0x0011, where 0x0011 seems to point to Intel's DVI ADPCM instead. Please check [1] for more information. Furthermore, the Quicktime ID should be MS$0011.

Yes, this is confusing. But 0x0011 is the 16-bit identifier for the IMA variant of ADPCM, which 0x0002 is the ID for Microsoft's own ADPCM variant, which is distinct from the IMA flavor. QuickTime ID for this is 'ms\x0\x11'. Multimedia Mike (talk) 20:24, 20 March 2022 (PDT)