AC3ENC_OPT_ON 1967 libavcodec/ac3enc.c opt->original = AC3ENC_OPT_ON; AC3ENC_OPT_ON 72 libavcodec/ac3enc_opts_template.c {"channel_coupling", "Channel Coupling", OFFSET(channel_coupling), AV_OPT_TYPE_INT, {.i64 = AC3ENC_OPT_AUTO }, AC3ENC_OPT_AUTO, AC3ENC_OPT_ON, AC3ENC_PARAM, "channel_coupling"},