Fix wrong import.

poetry.lock

@@ -872,6 +872,23 @@ notebook = ["ipywidgets (>=6)"]
 slack = ["envwrap", "slack-sdk"]
 telegram = ["envwrap", "requests"]
 
+[[package]]
+name = "types-tqdm"
+version = "4.70.0.20260827"
+description = "Typing stubs for tqdm"
+optional = false
+python-versions = ">=3.10"
+groups = ["dev"]
+files = [
+    {file = "types_tqdm-4.70.0.20260827-py3-none-any.whl", hash = "sha256:d6e02da8ec2bc11124e02d4bc84bd8b67a444f4c5decf544846897c8272c7023"},
+    {file = "types_tqdm-4.70.0.20260827.tar.gz", hash = "sha256:d3efd69243ac9093c552f1c0d081b77286d61ace96b6899a142542555bdad2dc"},
+]
+
+[package.extras]
+all = ["types-requests", "types-tensorflow"]
+requests = ["types-requests"]
+tensorflow = ["types-tensorflow"]
+
 [[package]]
 name = "typing-extensions"
 version = "4.16.0"
@@ -920,4 +937,4 @@ test = ["pytest", "pytest-cov"]
 [metadata]
 lock-version = "2.1"
 python-versions = ">=3.11,<4"
-content-hash = "bb1383a0bd739449d830d9146085c9dcd7f67d7ddaf93bf3e371b90f2d6c069c"
+content-hash = "76bcb7a8ee79106ddac32401277b69dd4895e0d8067d71277e344c3a4e083be2"

pyproject.toml

@@ -26,4 +26,37 @@ ruff = "^0.16.2"
 mypy = "^2.3.0"
 pytest = "^9.1.1"
 pylint = "^4.0.7"
+types-tqdm = "^4.70.0.20260827"
+
+
+[tool.ruff]
+target-version = "py311"
+line-length = 100
+src = ["src"]
+
+[tool.ruff.lint]
+select = [
+    "E",    # pycodestyle errors
+    "F",    # Pyflakes
+    "I",    # isort
+    "UP",   # pyupgrade
+    "B",    # flake8-bugbear
+    "SIM",  # flake8-simplify
+    "RET",  # flake8-return
+    "PERF", # Perflint
+]
+
+
+[tool.mypy]
+python_version = "3.11"
+files = ["src"]
+warn_unused_configs = true
+show_error_codes = true
+
+[[tool.mypy.overrides]]
+module = [
+    "coloredlogs",
+    "hexdump",
+]
+ignore_missing_imports = true
 

src/tscut/cli.py

@@ -11,6 +11,7 @@ from datetime import datetime, timedelta
 from os import unlink
 from shutil import copyfile, move
 from sys import exit
+from functools import cmp_to_key
 
 import coloredlogs
 import hexdump
@@ -19,7 +20,6 @@ from .tscut import (
     SupportedFormat,
     change_codec_private_data,
     check_required_tools,
-    cmp_to_key,
     compare_time_interval,
     concatenate_h264_parts,
     concatenate_h264_ts_parts,