diff --git a/public/css/style.css b/public/css/style.css
index 50311aa..2f23745 100644
--- a/public/css/style.css
+++ b/public/css/style.css
@@ -401,6 +401,27 @@ header p {
     font-weight: 600;
 }
 
+.play-btn {
+    margin-top: 1rem;
+    padding: 0.85rem 1.25rem;
+    border: none;
+    border-radius: 999px;
+    background: var(--accent);
+    color: #fff;
+    font-weight: 700;
+    cursor: pointer;
+    transition: transform 0.2s ease, background 0.2s ease;
+}
+
+.play-btn:hover {
+    background: var(--accent-hover);
+    transform: translateY(-1px);
+}
+
+.play-btn.hidden {
+    display: none !important;
+}
+
 .hidden {
     display: none !important;
 }
diff --git a/public/index.html b/public/index.html
index 0273a9f..4a59ffe 100644
--- a/public/index.html
+++ b/public/index.html
@@ -39,6 +39,14 @@
                         <option value="h265">H265</option>
                     </select>
                 </div>
+                <div class="codec-panel">
+                    <label for="encoder-select">硬件编码器：</label>
+                    <select id="encoder-select">
+                        <option value="software">Software</option>
+                        <option value="nvidia">NVIDIA</option>
+                        <option value="intel">Intel</option>
+                    </select>
+                </div>
                 <div id="loading-spinner" class="spinner-container">
                     <div class="spinner"></div>
                     <p>Fetching S3 Objects...</p>
@@ -63,6 +71,7 @@
                 <div id="now-playing" class="now-playing hidden">
                     <h3>Now Playing</h3>
                     <p id="current-video-title">video.mp4</p>
+                    <button id="play-btn" class="play-btn hidden">Play</button>
                 </div>
             </section>
         </main>
diff --git a/public/js/main.js b/public/js/main.js
index df7836f..be17cff 100644
--- a/public/js/main.js
+++ b/public/js/main.js
@@ -3,14 +3,23 @@ document.addEventListener('DOMContentLoaded', () => {
     const loadingSpinner = document.getElementById('loading-spinner');
     const refreshBtn = document.getElementById('refresh-btn');
     const codecSelect = document.getElementById('codec-select');
+    const encoderSelect = document.getElementById('encoder-select');
     const playerOverlay = document.getElementById('player-overlay');
     const transcodingOverlay = document.getElementById('transcoding-overlay');
     const videoPlayer = document.getElementById('video-player');
     const nowPlaying = document.getElementById('now-playing');
     const currentVideoTitle = document.getElementById('current-video-title');
+    const playBtn = document.getElementById('play-btn');
 
     let currentPollInterval = null;
 
+    if (playBtn) {
+        playBtn.addEventListener('click', () => {
+            videoPlayer.play().catch(e => console.log('Play blocked:', e));
+            playBtn.classList.add('hidden');
+        });
+    }
+
     // Fetch list of videos from the backend
     const fetchVideos = async () => {
         videoListEl.classList.add('hidden');
@@ -134,6 +143,7 @@ document.addEventListener('DOMContentLoaded', () => {
         playerOverlay.classList.add('hidden');
         videoPlayer.classList.add('hidden');
         videoPlayer.pause();
+        if (playBtn) playBtn.classList.add('hidden');
 
         nowPlaying.classList.remove('hidden');
         currentVideoTitle.textContent = key.split('/').pop();
@@ -142,10 +152,11 @@ document.addEventListener('DOMContentLoaded', () => {
 
         try {
             const codec = codecSelect?.value || 'h264';
+            const encoder = encoderSelect?.value || 'software';
             const res = await fetch('/api/transcode', {
                 method: 'POST',
                 headers: { 'Content-Type': 'application/json' },
-                body: JSON.stringify({ key, codec })
+                body: JSON.stringify({ key, codec, encoder })
             });
             const data = await res.json();
 
@@ -170,7 +181,7 @@ document.addEventListener('DOMContentLoaded', () => {
                 const res = await fetch(`/api/status?key=${encodeURIComponent(key)}`);
                 const data = await res.json();
 
-                if (data.ready) {
+                    if (data.ready) {
                     stopPolling();
                     playHlsStream(data.hlsUrl);
                 } else if (attempts >= maxAttempts) {
@@ -194,20 +205,21 @@ document.addEventListener('DOMContentLoaded', () => {
     const playHlsStream = (url) => {
         transcodingOverlay.classList.add('hidden');
         videoPlayer.classList.remove('hidden');
+        playBtn.classList.add('hidden');
 
         if (Hls.isSupported()) {
             const hls = new Hls();
             hls.loadSource(url);
             hls.attachMedia(videoPlayer);
             hls.on(Hls.Events.MANIFEST_PARSED, () => {
-                videoPlayer.play().catch(e => console.log('Auto-play blocked'));
+                playBtn.classList.remove('hidden');
             });
         } else if (videoPlayer.canPlayType('application/vnd.apple.mpegurl')) {
             // Safari uses native HLS
             videoPlayer.src = url;
             videoPlayer.addEventListener('loadedmetadata', () => {
-                videoPlayer.play().catch(e => console.log('Auto-play blocked'));
-            });
+                playBtn.classList.remove('hidden');
+            }, { once: true });
         }
     };
 
diff --git a/server.js b/server.js
index d242a66..f34f019 100644
--- a/server.js
+++ b/server.js
@@ -65,14 +65,20 @@ app.get('/api/videos', async (req, res) => {
 
 // Endpoint to transcode S3 video streaming to HLS
 app.post('/api/transcode', async (req, res) => {
-    const { key, codec } = req.body;
+    const { key, codec, encoder } = req.body;
 
     if (!key) {
         return res.status(400).json({ error: 'Video key is required' });
     }
 
     const safeCodec = codec === 'h265' ? 'h265' : 'h264';
-    const videoCodec = safeCodec === 'h265' ? 'libx265' : 'libx264';
+    const safeEncoder = ['nvidia', 'intel'].includes(encoder) ? encoder : 'software';
+    const codecMap = {
+        software: { h264: 'libx264', h265: 'libx265' },
+        nvidia: { h264: 'h264_nvenc', h265: 'hevc_nvenc' },
+        intel: { h264: 'h264_qsv', h265: 'hevc_qsv' }
+    };
+    const videoCodec = codecMap[safeEncoder][safeCodec];
 
     try {
         const safeKeySegments = key.split('/').map(segment => segment.replace(/[^a-zA-Z0-9_\-]/g, '_'));