From eb45ea785a5cd58315b6918b7e49ac6f83949913 Mon Sep 17 00:00:00 2001
From: neatnoise <neatnoise@gmail.com>
Date: Mon, 20 Apr 2026 19:06:00 +0200
Subject: [PATCH] fix(linux/vulkan): change default rate control from VBR to
 CBR (#5032)

---
 docs/configuration.md                                     | 4 ++--
 src/config.cpp                                            | 2 +-
 src_assets/common/assets/web/config.html                  | 2 +-
 src_assets/common/assets/web/public/assets/locale/en.json | 4 ++--
 4 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/docs/configuration.md b/docs/configuration.md
index ec4e56dde..8e59c0ab0 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -3029,13 +3029,13 @@ editing the `conf` file in a text editor. Use the examples as reference.
     <tr>
         <td>Default</td>
         <td colspan="2">@code{}
-            4
+            2
             @endcode</td>
     </tr>
     <tr>
         <td>Example</td>
         <td colspan="2">@code{}
-            vk_rc_mode = 2
+            vk_rc_mode = 4
             @endcode</td>
     </tr>
     <tr>
diff --git a/src/config.cpp b/src/config.cpp
index 9faac6f93..a79f7d881 100644
--- a/src/config.cpp
+++ b/src/config.cpp
@@ -503,7 +503,7 @@ namespace config {
 
     {
       2,  // vk.tune (default: ll - low latency)
-      4,  // vk.rc_mode (default: vbr)
+      2,  // vk.rc_mode (default: cbr)
     },
 
     {},  // capture
diff --git a/src_assets/common/assets/web/config.html b/src_assets/common/assets/web/config.html
index 979b0ac70..513932a2c 100644
--- a/src_assets/common/assets/web/config.html
+++ b/src_assets/common/assets/web/config.html
@@ -338,7 +338,7 @@
             name: "Vulkan Encoder",
             options: {
               "vk_tune": 2,
-              "vk_rc_mode": 4,
+              "vk_rc_mode": 2,
             },
           },
           {
diff --git a/src_assets/common/assets/web/public/assets/locale/en.json b/src_assets/common/assets/web/public/assets/locale/en.json
index 9d32b7357..30289b1ee 100644
--- a/src_assets/common/assets/web/public/assets/locale/en.json
+++ b/src_assets/common/assets/web/public/assets/locale/en.json
@@ -381,11 +381,11 @@
     "upnp_desc": "Automatically configure port forwarding for streaming over the Internet",
     "vaapi_strict_rc_buffer": "Strictly enforce frame bitrate limits for H.264/HEVC on AMD GPUs",
     "vaapi_strict_rc_buffer_desc": "Enabling this option can avoid dropped frames over the network during scene changes, but video quality may be reduced during motion.",
-    "vk_rc_cbr": "CBR (Constant Bitrate)",
+    "vk_rc_cbr": "CBR (Constant Bitrate) (default)",
     "vk_rc_cqp": "CQP (Constant QP)",
     "vk_rc_mode": "Rate Control",
     "vk_rc_mode_desc": "Rate control mode for encoding. Auto lets the driver decide.",
-    "vk_rc_vbr": "VBR (Variable Bitrate) (default)",
+    "vk_rc_vbr": "VBR (Variable Bitrate)",
     "vk_tune": "Tuning",
     "vk_tune_desc": "Low latency modes reduce encoding delay at the cost of quality.",
     "vk_tune_hq": "High Quality (hq)",