{"eld_sbr","Enable SBR for ELD (for SBR in other configurations, use the -profile parameter)",offsetof(AACContext,eld_sbr),AV_OPT_TYPE_INT,{.i64=0},0,1,AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_ENCODING_PARAM},
#if FDKENC_VER_AT_LEAST(4, 0) // 4.0.0
{"eld_v2","Enable ELDv2 (LD-MPS extension for ELD stereo signals)",offsetof(AACContext,eld_v2),AV_OPT_TYPE_INT,{.i64=0},0,1,AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_ENCODING_PARAM},
{"default","Choose signaling implicitly (explicit hierarchical by default, implicit if global header is disabled)",0,AV_OPT_TYPE_CONST,{.i64=-1},0,0,AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_ENCODING_PARAM,"signaling"},