添加了NEON硬件编码器选项，并增加了刷新列表、清空下载缓存和清空转码缓存的按钮。

server.js

@@ -148,20 +148,51 @@ wss.on('connection', (ws) => {
     ws.on('close', () => removeWsClient(ws));
 });
 
-const clearMp4Cache = () => {
-    const mp4Dir = path.join(__dirname, 'public', 'mp4');
-    if (!fs.existsSync(mp4Dir)) return;
+const mp4BaseDir = path.join(__dirname, 'public', 'mp4');
+
+const ensureDirectoryExists = (dirPath) => {
+    if (!fs.existsSync(dirPath)) {
+        fs.mkdirSync(dirPath, { recursive: true });
+    }
+};
+
+const clearDownloadCache = () => {
+    const tmpDir = os.tmpdir();
     try {
-        fs.rmSync(mp4Dir, { recursive: true, force: true });
+        if (!fs.existsSync(tmpDir)) return;
+        const files = fs.readdirSync(tmpDir);
+        for (const file of files) {
+            if (file.startsWith('s3-input-') && file.endsWith('.tmp')) {
+                const filePath = path.join(tmpDir, file);
+                fs.rmSync(filePath, { force: true });
+            }
+        }
+    } catch (err) {
+        console.error('Failed to clear download cache:', err);
+        throw err;
+    }
+};
+
+const clearMp4Cache = () => {
+    if (!fs.existsSync(mp4BaseDir)) return;
+    try {
+        fs.rmSync(mp4BaseDir, { recursive: true, force: true });
     } catch (err) {
         if (typeof fs.rmdirSync === 'function') {
-            fs.rmdirSync(mp4Dir, { recursive: true });
+            fs.rmdirSync(mp4BaseDir, { recursive: true });
         } else {
             throw err;
         }
     }
 };
 
+const clearTranscodeCache = () => {
+    clearMp4Cache();
+    Object.keys(progressMap).forEach((key) => delete progressMap[key]);
+};
+
+ensureDirectoryExists(mp4BaseDir);
+
 // Endpoint to list available buckets
 app.get('/api/buckets', async (req, res) => {
     try {
@@ -228,8 +259,7 @@ app.get('/api/config', (req, res) => {
 
 app.post('/api/reset-cache', (req, res) => {
     try {
-        clearMp4Cache();
-        Object.keys(progressMap).forEach((key) => delete progressMap[key]);
+        clearTranscodeCache();
         res.json({ message: 'Cache reset' });
     } catch (error) {
         console.error('Error resetting cache:', error);
@@ -237,6 +267,26 @@ app.post('/api/reset-cache', (req, res) => {
     }
 });
 
+app.post('/api/clear-download-cache', (req, res) => {
+    try {
+        clearDownloadCache();
+        res.json({ message: 'Download cache cleared' });
+    } catch (error) {
+        console.error('Error clearing download cache:', error);
+        res.status(500).json({ error: 'Failed to clear download cache', detail: error.message });
+    }
+});
+
+app.post('/api/clear-transcode-cache', (req, res) => {
+    try {
+        clearTranscodeCache();
+        res.json({ message: 'Transcode cache cleared' });
+    } catch (error) {
+        console.error('Error clearing transcode cache:', error);
+        res.status(500).json({ error: 'Failed to clear transcode cache', detail: error.message });
+    }
+});
+
 // Endpoint to transcode S3 video streaming to MP4
 app.post('/api/transcode', async (req, res) => {
     const { bucket, key, codec, encoder } = req.body;