refactor: extract launch script + adapt metadata extractor

scripts/extract_metadata.py

@@ -0,0 +1,47 @@
+#!/usr/bin/env python3
+
+import argparse
+import logging
+import os
+import sys
+
+from src.metadata_extractor import MetadataExtractor
+
+
+def main():
+    logging.basicConfig(
+        level=logging.INFO,
+        format="[%(levelname)s] %(message)s"
+    )
+
+    parser = argparse.ArgumentParser(
+        description="Extract metadata from video files and save as JSON"
+    )
+    parser.add_argument(
+        "input",
+        help="Path to input video file or directory"
+    )
+    parser.add_argument(
+        "-o", "--output",
+        help="Directory path where the output JSON files will be saved"
+    )
+    args = parser.parse_args()
+
+    input_path = args.input
+    output_dir = args.output
+
+    extractor: MetadataExtractor = MetadataExtractor()
+
+    success = False
+    if os.path.isfile(input_path):
+        success = extractor.process_file(input_path, output_dir)
+    elif os.path.isdir(input_path):
+        success = extractor.process_directory(input_path, output_dir)
+    else:
+        logging.error(f"Path not found: {input_path}")
+
+    if not success:
+        sys.exit(1)
+
+if __name__ == "__main__":
+    main()