diff --git a/public/index.html b/public/index.html
index 20abdc1..e452647 100644
--- a/public/index.html
+++ b/public/index.html
@@ -54,11 +54,7 @@
                     </select>
                 </div>
                 <div class="codec-panel">
-                    <label for="decoder-select">视频解码器：</label>
-                    <select id="decoder-select"></select>
-                </div>
-                <div class="codec-panel">
-                    <label for="encoder-select">硬件编码器：</label>
+                    <label for="encoder-select">编码加速：</label>
                     <select id="encoder-select"></select>
                 </div>
                 <div id="loading-spinner" class="spinner-container">
diff --git a/public/js/main.js b/public/js/main.js
index bdcfbb4..3da5a0a 100644
--- a/public/js/main.js
+++ b/public/js/main.js
@@ -10,10 +10,7 @@ document.addEventListener('DOMContentLoaded', () => {
     const loginPasswordInput = document.getElementById('login-password');
     const loginBtn = document.getElementById('login-btn');
     const loginError = document.getElementById('login-error');
-    const decoderSelect = document.getElementById('decoder-select');
     const encoderSelect = document.getElementById('encoder-select');
-    const decoderLabel = document.querySelector('label[for="decoder-select"]');
-    const encoderLabel = document.querySelector('label[for="encoder-select"]');
     const playerOverlay = document.getElementById('player-overlay');
     const transcodingOverlay = document.getElementById('transcoding-overlay');
     const videoPlayer = document.getElementById('video-player');
@@ -92,12 +89,7 @@ document.addEventListener('DOMContentLoaded', () => {
     if (playbackSpeed) {
         videoPlayer.playbackRate = parseFloat(playbackSpeed.value) || 1;
     }
-    if (decoderLabel) {
-        decoderLabel.textContent = '视频解码器：';
-    }
-    if (encoderLabel) {
-        encoderLabel.textContent = '视频编码器：';
-    }
+
 
     const formatBytes = (bytes) => {
         if (!bytes || bytes === 0) return '0 B';
@@ -143,7 +135,7 @@ document.addEventListener('DOMContentLoaded', () => {
     };
 
     const buildHlsPlaylistUrl = () => {
-        const decoder = decoderSelect?.value || 'auto';
+        const decoder = 'auto';
         const encoder = encoderSelect?.value || 'h264_rkmpp';
         let streamUrl = `/api/hls/playlist.m3u8?bucket=${encodeURIComponent(selectedBucket)}&key=${encodeURIComponent(selectedKey)}&decoder=${encodeURIComponent(decoder)}&encoder=${encodeURIComponent(encoder)}`;
         if (s3Username) streamUrl += `&username=${encodeURIComponent(s3Username)}`;
@@ -542,7 +534,6 @@ document.addEventListener('DOMContentLoaded', () => {
             topBanner.textContent = title;
             topBanner.classList.remove('hidden');
             document.title = title;
-            populateSelect(decoderSelect, data.videoDecoders || [], data.defaultVideoDecoder || 'auto');
             populateSelect(encoderSelect, data.videoEncoders || [], data.defaultVideoEncoder || 'h264_rkmpp');
         } catch (err) {
             console.error('Config load failed:', err);
diff --git a/server.js b/server.js
index ad48e12..1591f5f 100644
--- a/server.js
+++ b/server.js
@@ -76,31 +76,14 @@ const transcodeProcesses = new Map();
 const wsSubscriptions = new Map();
 
 const AVAILABLE_VIDEO_ENCODERS = [
-    { value: 'libx264', label: 'libx264 (Software H.264)' },
-    { value: 'libx265', label: 'libx265 (Software H.265)' },
-    { value: 'h264_nvenc', label: 'h264_nvenc (NVIDIA H.264)' },
-    { value: 'hevc_nvenc', label: 'hevc_nvenc (NVIDIA HEVC)' },
-    { value: 'h264_qsv', label: 'h264_qsv (Intel QSV H.264)' },
-    { value: 'hevc_qsv', label: 'hevc_qsv (Intel QSV HEVC)' },
-    { value: 'h264_vaapi', label: 'h264_vaapi (VAAPI H.264)' },
-    { value: 'hevc_vaapi', label: 'hevc_vaapi (VAAPI HEVC)' },
-    { value: 'h264_rkmpp', label: 'h264_rkmpp (RKMPP H.264)' },
-    { value: 'hevc_rkmpp', label: 'hevc_rkmpp (RKMPP HEVC)' },
-    { value: 'mjpeg_rkmpp', label: 'mjpeg_rkmpp (RKMPP MJPEG)' }
+    { value: 'h264_rkmpp', label: 'H.264(RKMPP HighSpeed)' },
+    { value: 'hevc_rkmpp', label: 'H.265(RKMPP HighSpeed)' },
+    { value: 'libx264', label: 'H.264(Software Slow)' },
+    { value: 'libx265', label: 'H.265(Software Slow)' }
 ];
 
 const AVAILABLE_VIDEO_DECODERS = [
-    { value: 'auto', label: 'Auto Select Decoder' },
-    { value: 'av1_rkmpp', label: 'av1_rkmpp (RKMPP AV1)' },
-    { value: 'h263_rkmpp', label: 'h263_rkmpp (RKMPP H.263)' },
-    { value: 'h264_rkmpp', label: 'h264_rkmpp (RKMPP H.264)' },
-    { value: 'hevc_rkmpp', label: 'hevc_rkmpp (RKMPP HEVC)' },
-    { value: 'mjpeg_rkmpp', label: 'mjpeg_rkmpp (RKMPP MJPEG)' },
-    { value: 'mpeg1_rkmpp', label: 'mpeg1_rkmpp (RKMPP MPEG-1)' },
-    { value: 'mpeg2_rkmpp', label: 'mpeg2_rkmpp (RKMPP MPEG-2)' },
-    { value: 'mpeg4_rkmpp', label: 'mpeg4_rkmpp (RKMPP MPEG-4)' },
-    { value: 'vp8_rkmpp', label: 'vp8_rkmpp (RKMPP VP8)' },
-    { value: 'vp9_rkmpp', label: 'vp9_rkmpp (RKMPP VP9)' }
+    { value: 'auto', label: 'Auto Select Decoder' }
 ];
 
 const getProgressKey = (key) => key.split('/').map(segment => segment.replace(/[^a-zA-Z0-9_\-]/g, '_')).join('/');