允许拉取进度条

server.js

@@ -111,6 +111,15 @@ const shouldRetryWithSoftware = (message) => {
     return /Cannot load libcuda\.so\.1|Could not open encoder before EOF|Error while opening encoder|Operation not permitted|Invalid argument/i.test(message);
 };
 
+const probeFile = (filePath) => {
+    return new Promise((resolve, reject) => {
+        ffmpeg.ffprobe(filePath, (err, metadata) => {
+            if (err) reject(err);
+            else resolve(metadata);
+        });
+    });
+};
+
 const extractS3Credentials = (req) => {
     const query = req.query || {};
     const username = req.headers['x-s3-username'] || req.body?.username || query.username || query.accessKeyId || '';
@@ -284,6 +293,7 @@ app.get('/api/stream', async (req, res) => {
     const key = req.query.key;
     const codec = req.query.codec;
     const encoder = req.query.encoder;
+    const startSeconds = parseFloat(req.query.ss) || 0;
 
     if (!bucket) {
         return res.status(400).json({ error: 'Bucket name is required' });
@@ -378,6 +388,15 @@ app.get('/api/stream', async (req, res) => {
             broadcastWs(progressKey, { type: 'progress', key, progress: progressMap[progressKey] });
         }
 
+        // Probe file for duration and broadcast to clients
+        try {
+            const metadata = await probeFile(tmpInputPath);
+            const duration = metadata.format?.duration || 0;
+            broadcastWs(progressKey, { type: 'duration', key, duration: parseFloat(duration) });
+        } catch (probeErr) {
+            console.error('Probe failed:', probeErr);
+        }
+
         res.setHeader('Content-Type', 'video/mp4');
         res.setHeader('Cache-Control', 'no-cache');
         res.setHeader('Connection', 'keep-alive');
@@ -392,6 +411,10 @@ app.get('/api/stream', async (req, res) => {
                 .outputOptions(streamingOptions)
                 .format('mp4');
 
+            if (startSeconds > 0) {
+                ffmpegCommand.inputOptions(['-ss', startSeconds.toString()]);
+            }
+
             if (/_vaapi$/.test(encoderName)) {
                 ffmpegCommand
                     .inputOptions(['-vaapi_device', '/dev/dri/renderD128'])