fix: set C locale for mpv compatibility

verify_sync.py

@@ -22,9 +22,11 @@ Usage:
 """
 
 from __future__ import annotations
-import os, sys, math, argparse, subprocess, json, shutil, threading, tempfile, warnings
+import os, sys, math, argparse, subprocess, json, shutil, threading, tempfile, warnings, locale
 import numpy as np
 
+locale.setlocale(locale.LC_NUMERIC, "C")
+
 warnings.filterwarnings("ignore", category=RuntimeWarning, module="pyqtgraph")
 
 try: