AAC-LD and AAC-ELD

Codec	Rate	QuickTime	ffmpeg	VLC
AAC-LD	8000	yes	no	no
AAC-LD	16000	yes	no	no
AAC-LD	22050	yes	yes	no
AAC-LD	24000	yes	yes	no
AAC-LD	32000	yes	yes	no
AAC-ELD	8000	yes	no	no
AAC-ELD	16000	yes	no	no
AAC-ELD	22050	yes	yes	yes
AAC-ELD	24000	yes	yes	yes
AAC-ELD	32000	yes	yes	yes

Useful links

• 4.6.20 Enhanced Low Delay Codec
• https://stackoverflow.com/questions/40014508/aac-adts-for-aacobject-eld-packets
• https://code.videolan.org/videolan/vlc/-/blob/master/modules/packetizer/mpeg4audio.c