diff --git a/services/capture/src/capture-manager.js b/services/capture/src/capture-manager.js
index b663834..20e3c97 100644
--- a/services/capture/src/capture-manager.js
+++ b/services/capture/src/capture-manager.js
@@ -10,7 +10,7 @@ import { createUploadStream } from './s3/client.js';
  * Rejects if the process exits with a non-zero code before emitting a line,
  * or if timeoutMs elapses.
  */
-function readFirstStderrLine(proc, timeoutMs = 35_000) {
+function readFirstStderrLine(proc, timeoutMs = 300_000) {
   return new Promise((resolve, reject) => {
     let buf = '';
     let settled = false;
@@ -614,7 +614,7 @@ class CaptureManager {
         '--signal-timeout',   '30',
       ], { stdio: ['ignore', 'pipe', 'pipe'] });
 
-      const fmt = await readFirstStderrLine(bridge, 35_000);
+      const fmt = await readFirstStderrLine(bridge, 300_000);
       bridge.stderr.on('data', (d) => console.error(`[deltacast-bridge] ${d.toString().trimEnd()}`));
 
       return {