{"iblock","Sets the impulse block bias",offsetof(OggVorbisContext,iblock),FF_OPT_TYPE_DOUBLE,0,-15,0,AV_OPT_FLAG_ENCODING_PARAM},
{"iblock","Sets the impulse block bias",offsetof(OggVorbisContext,iblock),FF_OPT_TYPE_DOUBLE,0,-15,0,AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_ENCODING_PARAM},