diff --git a/config.py b/config.py
index fbe532b..44198ab 100644
--- a/config.py
+++ b/config.py
@@ -1,4 +1,6 @@
 from pathlib import Path
+import re
+from typing import Optional
 
 class Config:
     QUEUE_FILE = "queue.json"
@@ -6,3 +8,5 @@ class Config:
     BASE_PATH = Path("/path/to/videos")
     DESTINATION_PATH = Path("/where/to/save/result")
     LOW_BITRATE_THRESHOLD = 550
+    FILENAME_REGEX: Optional[re.Pattern] = None
+    OVERWRITE: bool = True
diff --git a/main.py b/main.py
index baecc0b..a24bda1 100644
--- a/main.py
+++ b/main.py
@@ -20,6 +20,9 @@ extensions = {
 jobs = []
 for dir, dirs, files in os.walk(str(Config.BASE_PATH)):
     for file in files:
+        if Config.FILENAME_REGEX:
+            if not Config.FILENAME_REGEX.match(file):
+                continue
         parts = file.rsplit(".", 1)
         if len(parts) == 2:
             extension = parts[1].lower()
@@ -28,6 +31,8 @@ for dir, dirs, files in os.walk(str(Config.BASE_PATH)):
                 relative_path = current_path.relative_to(Config.BASE_PATH)
                 print(relative_path / file, end=" ")
                 item = QueueItem(Path(dir) / file, Config.DESTINATION_PATH / relative_path)
+                if not Config.OVERWRITE and item.task.destination.exists():
+                    continue
                 info = item.task.mediainfo
                 if info.codec == 'HEVC':
                     print("")