From 963e95c37a60864c71b3907bd2a4c0a5e82c11d1 Mon Sep 17 00:00:00 2001
From: Honney OC <honney@gmx.net>
Date: Mon, 14 Sep 2026 00:28:34 +0000
Subject: [PATCH] fix: mpv in verify_sync

---
 verify_sync.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/verify_sync.py b/verify_sync.py
index 5518a2c..9e516b1 100644
--- a/verify_sync.py
+++ b/verify_sync.py
@@ -218,7 +218,8 @@ class VerifyWindow(QtWidgets.QMainWindow):
 
         self._setup_ui()
         self._draw_waveforms()
-        self._setup_mpv()
+        # Defer mpv setup until window is shown and winId() is valid
+        QtCore.QTimer.singleShot(0, self._setup_mpv)
 
     def _setup_ui(self):
         central = QtWidgets.QWidget()