https://www.ffmpeg.org/#aac_encoder_stable
FFmpeg 3.0 "Einstein", a new major release, is now available! Some of the highlights:
- The native FFmpeg AAC encoder has seen extensive improvements and is no longer considered experimental
- Removed support for libvo-aacenc and libaacplus
- Over 30 new filters have been added
- Many ASM optimizations
- VP9 Hardware Acceleration (DXVA2 and VA-API)
- Cineform HD decoder
- New DCA decoder based on libdcadec with full support for DTS-HD extensions
- As with all major releases expect major backward incompatible API/ABI changes
- See the Changelog for a list of more updates
We strongly recommend users, distributors, and system integrators to upgrade unless they use current git master.
比较结果已经和fdkaac在码率64k 96k 128k基本上相同音质
http://d.hatena.ne.jp/kamedo2/20160215