diff --git a/src/config.cpp b/src/config.cpp
index b19486382ce..7418fc0c112 100644
--- a/src/config.cpp
+++ b/src/config.cpp
@@ -953,6 +953,8 @@ namespace config {
                                 video.nv.two_pass == nvenc::nvenc_two_pass::full_resolution    ? NV_ENC_TWO_PASS_FULL_RESOLUTION :
                                                                                                  NV_ENC_MULTI_PASS_DISABLED;
     video.nv_legacy.h264_coder = video.nv.h264_cavlc ? NV_ENC_H264_ENTROPY_CODING_MODE_CAVLC : NV_ENC_H264_ENTROPY_CODING_MODE_CABAC;
+    video.nv_legacy.aq = video.nv.adaptive_quantization;
+    video.nv_legacy.vbv_percentage_increase = video.nv.vbv_percentage_increase;
 #endif
 
     int_f(vars, "qsv_preset", video.qsv.qsv_preset, qsv::preset_from_view);
diff --git a/src/config.h b/src/config.h
index 3ea736444c8..e08a87f3c4d 100644
--- a/src/config.h
+++ b/src/config.h
@@ -37,6 +37,8 @@ namespace config {
       int preset;
       int multipass;
       int h264_coder;
+      int aq;
+      int vbv_percentage_increase;
     } nv_legacy;
 
     struct {
diff --git a/src/video.cpp b/src/video.cpp
index 68402d29d81..206e7feeb62 100644
--- a/src/video.cpp
+++ b/src/video.cpp
@@ -638,6 +638,7 @@ namespace video {
         { "tune"s, NV_ENC_TUNING_INFO_ULTRA_LOW_LATENCY },
         { "rc"s, NV_ENC_PARAMS_RC_CBR },
         { "multipass"s, &config::video.nv_legacy.multipass },
+        { "aq"s, &config::video.nv_legacy.aq },
       },
       // SDR-specific options
       {},
@@ -658,6 +659,7 @@ namespace video {
         { "tune"s, NV_ENC_TUNING_INFO_ULTRA_LOW_LATENCY },
         { "rc"s, NV_ENC_PARAMS_RC_CBR },
         { "multipass"s, &config::video.nv_legacy.multipass },
+        { "aq"s, &config::video.nv_legacy.aq },
       },
       // SDR-specific options
       {
@@ -681,6 +683,7 @@ namespace video {
         { "rc"s, NV_ENC_PARAMS_RC_CBR },
         { "coder"s, &config::video.nv_legacy.h264_coder },
         { "multipass"s, &config::video.nv_legacy.multipass },
+        { "aq"s, &config::video.nv_legacy.aq },
       },
       // SDR-specific options
       {
@@ -1698,6 +1701,12 @@ namespace video {
           }
           else {
             ctx->rc_buffer_size = bitrate / config.framerate;
+
+#ifndef __APPLE__
+            if (encoder.name == "nvenc" && config::video.nv_legacy.vbv_percentage_increase > 0) {
+              ctx->rc_buffer_size += ctx->rc_buffer_size * config::video.nv_legacy.vbv_percentage_increase / 100;
+            }
+#endif
           }
         }
       }