diff --git a/services/capture/src/index.js b/services/capture/src/index.js
index 09bccd1..c626f18 100644
--- a/services/capture/src/index.js
+++ b/services/capture/src/index.js
@@ -10,24 +10,38 @@ const app = express();
 const PORT = process.env.PORT || 3001;
 const MAM_API_URL = process.env.MAM_API_URL || 'http://mam-api:3000';
 
-// Middleware
 app.use(cors());
 app.use(express.json());
 
-// Health check
 app.get('/health', (req, res) => {
   res.json({ status: 'ok' });
 });
 
-// Routes
 app.use('/capture', captureRoutes);
 
-// Start server
 const server = app.listen(PORT, () => {
   console.log(`Wild Dragon Capture Service listening on port ${PORT}`);
   bootstrapAutoStart();
 });
 
+// Mapped from the env vars routes/recorders.js writes into the container.
+// Empty strings collapse to undefined so capture-manager's defaults win.
+function envOpt(name) {
+  const v = process.env[name];
+  return v === undefined || v === '' ? undefined : v;
+}
+function envInt(name) {
+  const v = envOpt(name);
+  if (v === undefined) return undefined;
+  const n = parseInt(v, 10);
+  return Number.isFinite(n) ? n : undefined;
+}
+function envBool(name) {
+  const v = envOpt(name);
+  if (v === undefined) return undefined;
+  return v === 'true' || v === '1' || v === 'yes';
+}
+
 async function bootstrapAutoStart() {
   const recorderId = process.env.RECORDER_ID;
   const sourceType = process.env.SOURCE_TYPE;
@@ -44,29 +58,42 @@ async function bootstrapAutoStart() {
   }
 
   const listen = process.env.LISTEN === '1' || process.env.LISTEN === 'true';
-  const listenPort = process.env.LISTEN_PORT
-    ? parseInt(process.env.LISTEN_PORT, 10)
-    : undefined;
-  const streamKey = process.env.STREAM_KEY || undefined;
-  const sourceUrl = process.env.SOURCE_URL || undefined;
-
-  if (sourceType === 'sdi') {
-    console.warn('[bootstrap] SDI auto-start not supported');
-    return;
-  }
+  const listenPort = envInt('LISTEN_PORT');
+  const streamKey = envOpt('STREAM_KEY');
+  const sourceUrl = envOpt('SOURCE_URL');
+  const device    = envInt('DEVICE_INDEX');
 
   console.log(`[bootstrap] starting ${sourceType} ingest (listen=${listen} port=${listenPort || 'n/a'})...`);
   try {
     const session = await captureManager.start({
-      assetId: process.env.ASSET_ID || null,
+      assetId: envOpt('ASSET_ID') || null,
       projectId,
-      binId: process.env.BIN_ID || null,
+      binId: envOpt('BIN_ID') || null,
       clipName,
+      device,
       sourceType,
       sourceUrl,
       listen,
       listenPort,
       streamKey,
+
+      // Recording codec — recorders.js passes these straight through
+      videoCodec:    envOpt('RECORDING_CODEC')           || 'prores_hq',
+      videoBitrate:  envOpt('RECORDING_VIDEO_BITRATE'),
+      framerate:     envOpt('RECORDING_FRAMERATE'),
+      audioCodec:    envOpt('RECORDING_AUDIO_CODEC')     || 'pcm_s24le',
+      audioBitrate:  envOpt('RECORDING_AUDIO_BITRATE'),
+      audioChannels: envInt('RECORDING_AUDIO_CHANNELS')  ?? 2,
+      container:     envOpt('RECORDING_CONTAINER')       || 'mov',
+
+      proxyEnabled:       envBool('PROXY_ENABLED') ?? true,
+      proxyVideoCodec:    envOpt('PROXY_CODEC')          || 'h264',
+      proxyVideoBitrate:  envOpt('PROXY_VIDEO_BITRATE')  || '8M',
+      proxyFramerate:     envOpt('PROXY_FRAMERATE'),
+      proxyAudioCodec:    envOpt('PROXY_AUDIO_CODEC')    || 'aac',
+      proxyAudioBitrate:  envOpt('PROXY_AUDIO_BITRATE')  || '192k',
+      proxyAudioChannels: envInt('PROXY_AUDIO_CHANNELS') ?? 2,
+      proxyContainer:     envOpt('PROXY_CONTAINER')      || 'mp4',
     });
     console.log(`[bootstrap] session ${session.sessionId} started for clip ${clipName}`);
   } catch (err) {