AAC has licensing / patents: > However, a patent license is required for all manufacturers or developers of AAC "end-user" codecs.[52] The terms (as disclosed

AAC has licensing / patents: > However, a patent license is required for all manufacturers or developers of AAC "end-user" codecs.[52] The terms (as disclosed to SEC) uses per-unit pricing. In the case of software, each computer running the software is to be considered a separate "unit".[53] […] > The AAC patent holders include Bell Labs, Dolby, ETRI, Fraunhofer, JVC Kenwood, LG Electronics, Microsoft, NEC, NTT (and its subsidiary NTT Docomo), Panasonic, Philips, and Sony Corporation.[16][1] Based on the list of patents from the SEC terms, the last baseline AAC patent expires in 2028, and the last patent for all AAC extensions mentioned expires in 2031.[57] * https://en.wikipedia.org/wiki/Advanced_Audio_Coding#Licensing_and_patents https://en.wikipedia.org/wiki/Advanced_Audio_Coding#Licensin...