MFX_LOOKAHEAD_DS_OFF  257 libavcodec/qsvenc.c     case MFX_LOOKAHEAD_DS_OFF: av_log(avctx, AV_LOG_VERBOSE, "off");     break;
MFX_LOOKAHEAD_DS_OFF  123 libavcodec/qsvenc_h264.c     { "off"                    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_LOOKAHEAD_DS_OFF     }, INT_MIN, INT_MAX,     VE, "look_ahead_downsampling" },