Add --input-list option to read input files from a text file

Author: odie5533

ffmpeg_normalize/__main__.py

@@ -52,7 +52,12 @@ def create_parser() -> argparse.ArgumentParser:
     )
 
     group_io = parser.add_argument_group("File Input/output")
-    group_io.add_argument("input", nargs="+", help="Input media file(s)")
+    group_io.add_argument("input", nargs="*", help="Input media file(s)")
+    group_io.add_argument(
+        "--input-list",
+        type=str,
+        help="Path to a text file containing a line-separated list of input files",
+    )
     group_io.add_argument(
         "-o",
         "--output",
@@ -583,7 +588,18 @@ def _split_options(opts: str) -> list[str]:
             "Will apply default file naming for the remaining ones."
         )
 
-    for index, input_file in enumerate(cli_args.input):
+    # Collect input files from positional args and --input-list
+    input_files = list(cli_args.input) if cli_args.input else []
+    if cli_args.input_list:
+        if not os.path.exists(cli_args.input_list):
+            error(f"Input list file '{cli_args.input_list}' does not exist")
+        with open(cli_args.input_list, "r") as f:
+            input_files.extend([line.strip() for line in f if line.strip()])
+
+    if not input_files:
+        error("No input files specified. Use positional arguments or --input-list.")
+
+    for index, input_file in enumerate(input_files):
         if cli_args.output is not None and index < len(cli_args.output):
             if cli_args.output_folder and cli_args.output_folder != "normalized":
                 _logger.warning(

tests/test_all.py

@@ -147,6 +147,28 @@ def cleanup(self):
             if os.path.isdir("normalized"):
                 shutil.rmtree("normalized")
 
+    def test_input_list(self, tmp_path):
+        # Create a temporary input list file using pytest tmp_path
+        input_list_path = tmp_path / "input_list.txt"
+        input_list_path.write_text("tests/test.mp4\ntests/test.mp4\n")
+        # Run ffmpeg-normalize with --input-list
+        ffmpeg_normalize_call(["--input-list", str(input_list_path)])
+        # Check output files
+        assert os.path.isfile("normalized/test.mkv")
+
+    def test_no_input_specified(self):
+        """Run the CLI with no arguments; should exit with error"""
+        _, stderr = ffmpeg_normalize_call([])
+        assert "No input files specified" in stderr
+
+    def test_empty_input_list_file(self, tmp_path):
+        # Create an empty input list file using pytest tmp_path
+        input_list_path = tmp_path / "empty_input_list.txt"
+        input_list_path.write_text("")
+        _, stderr = ffmpeg_normalize_call(["--input-list", str(input_list_path)])
+        # Should error because the list is empty
+        assert "No input files specified" in stderr
+
     def test_output_filename_and_folder(self):
         ffmpeg_normalize_call(["tests/test.mp4"])
         assert os.path.isfile("normalized/test.mkv")