Where did ATRAC go? 2017-12-29 01:02:21 So, recently, I'm kinda trying to make heads or tails out of codecs like AC-3, E-AC-3, ATRAC, ATRAC3, and the newer ATRAC incarnations.The reason is simple: seeing if software is around to handle them, encode and decode them on Linux.I've recently learned of ATRAC9. I thought ATRAC was basically abandoned by Sony, but it seems that's not so! In fact ATRAC9 is "Designed for games", and is used on the PS4 and PS Vita (what about PS4 Pro, though?).So it seems ATRAC isn't actually as dead as I though, and I was wondering what software people use to work with it (the only one I know of is FFmpeg), and who works with those codecs in the wild, and can perhaps shed some light about where the codec, or Sony rather, is going with this. Is ATRAC9 the last one of the breed and PS4 Pro doesn't use an ATRAC variant?FFmpeg is able to encode AC-3 and E-AC-3 as well as decode them, however when it comes to ATRAC, only ATRAC3 and ATRAC3+ are supported, both standard and with a lossless profile, each. However, FFmpeg can only decode ATRAC.To be honest, I mainly prefer tools like lame and flac. I.e. stand-alone encoders and decoders, FFmpeg is fine and all that, but for daily use in the console, having a dedicated tool for the codecs I've mentioned, would be great. Aften is available for AC-3 (but not E-AC-3), but it's super old and abandoned. There are no ATRAC encoders that I know of (at least not for Linux, anyway).ATRAC3 has been released in 1999, 2002, and 2006, with the various profiles being released one after the other. Going by these years, when will be the earliest for its patents to expire? Since patents take 20 years to expire, that'd be 2019, 2022, and 2026, correct?And what about ATRAC9? No encoders as far as I can see, and is it still being used in the newer PS4 Pro?