diff --git a/h264_converter.py b/h264_converter.py
index 48c060d..5068340 100644
--- a/h264_converter.py
+++ b/h264_converter.py
@@ -4,6 +4,7 @@ if 8 * struct.calcsize("P") != 32:
     sys.exit(32)
 
 import os
+os.chdir(os.path.dirname(os.path.abspath(__file__)))
 dll = os.path.abspath('H264Play.dll')
 print(f"H264Play.dll path: {dll}")