diff --git a/notes/Speicher.md b/notes/Speicher.md
index f2222cd..d0ed3b0 100644
--- a/notes/Speicher.md
+++ b/notes/Speicher.md
@@ -9,7 +9,7 @@ _ data
   |_ LinusTechTips
     |_ .ucast
       |_ videos.json  # IDs und Metadaten aller heruntergeladenen Videos
-      |_ options.json  # Kanalspezifische Optionen (ID, enabled)
+      |_ options.json  # Kanalspezifische Optionen (ID, LastScan)
       |_ avatar.png  # Profilbild des Kanals
       |_ feed.xml  # RSS-Feed
       |_ covers  # Cover-Bilder
@@ -24,10 +24,15 @@ _ data
 
 ## Datenmodelle
 
+### LastScan
+
+- LastScan: datetime
+
 ### ChannelOptions
 
 - ID: str
 - Active: bool = True
+- LastScan: datetime
 - SkipLivestreams: bool = True
 - SkipShorts: bool = True
 - KeepVideos: int = -1
@@ -38,7 +43,6 @@ _ data
 
 ### Video
 
-- ID: str
 - Title: str
 - Slug: str (YYMMDD_Title, used as filename)
 - Published: datetime
diff --git a/poetry.lock b/poetry.lock
index 7909b86..ae17884 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -174,14 +174,6 @@ category = "dev"
 optional = false
 python-versions = "*"
 
-[[package]]
-name = "invoke"
-version = "1.7.0"
-description = "Pythonic task execution"
-category = "dev"
-optional = false
-python-versions = "*"
-
 [[package]]
 name = "itsdangerous"
 version = "2.1.2"
@@ -447,7 +439,7 @@ websockets = "*"
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.10"
-content-hash = "cf8899258dac046f0ed3d0492161db330ab735dc8dcbe1c46d2c8d4e48b66342"
+content-hash = "df5be5b98bd03da41732b908331f0a731408f65a96b078c0139773f0759afac3"
 
 [metadata.files]
 atomicwrites = [
@@ -695,10 +687,6 @@ iniconfig = [
     {file = "iniconfig-1.1.1-py2.py3-none-any.whl", hash = "sha256:011e24c64b7f47f6ebd835bb12a743f2fbe9a26d4cecaa7f53bc4f35ee9da8b3"},
     {file = "iniconfig-1.1.1.tar.gz", hash = "sha256:bc3af051d7d14b2ee5ef9969666def0cd1a000e121eaea580d4a313df4b37f32"},
 ]
-invoke = [
-    {file = "invoke-1.7.0-py3-none-any.whl", hash = "sha256:a5159fc63dba6ca2a87a1e33d282b99cea69711b03c64a35bb4e1c53c6c4afa0"},
-    {file = "invoke-1.7.0.tar.gz", hash = "sha256:e332e49de40463f2016315f51df42313855772be86435686156bc18f45b5cc6c"},
-]
 itsdangerous = [
     {file = "itsdangerous-2.1.2-py3-none-any.whl", hash = "sha256:2c2349112351b88699d8d4b6b075022c0808887cb7ad10069318a8b0bc88db44"},
     {file = "itsdangerous-2.1.2.tar.gz", hash = "sha256:5dbbc68b317e5e42f327f9021763545dc3fc3bfe22e6deb96aaf1fc38874156a"},
diff --git a/pyproject.toml b/pyproject.toml
index ba48a57..353ea37 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,7 +20,6 @@ fonts = "^0.0.3"
 [tool.poetry.dev-dependencies]
 pytest = "^7.1.1"
 pytest-cov = "^3.0.0"
-invoke = "^1.7.0"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]
diff --git a/tests/test_cover.py b/tests/test_cover.py
index 745c2e6..d2e1407 100644
--- a/tests/test_cover.py
+++ b/tests/test_cover.py
@@ -1,14 +1,12 @@
 # coding=utf-8
 from typing import List
-import tempfile
-from pathlib import Path
 
 import pytest
-from PIL import Image, ImageFont, ImageChops
+from PIL import ImageFont
 from fonts.ttf import SourceSansPro
 
 import tests
-from ucast import cover, types
+from ucast import cover
 
 
 @pytest.mark.parametrize('height,width,text,expect', [
@@ -24,61 +22,3 @@ def test_split_text(height: int, width: int, text: str, expect: List[str]):
     font = ImageFont.truetype(SourceSansPro, 40)
     lines = cover._split_text(height, width, text, font, 8)
     assert lines == expect
-
-
-@pytest.mark.parametrize('file_name,color', [
-    ('t1.webp', (63, 63, 62)),
-    ('t2.webp', (74, 45, 37)),
-    ('t3.webp', (54, 24, 28)),
-])
-def test_get_dominant_color(file_name: str, color: types.Color):
-    img = Image.open(tests.DIR_TESTFILES / 'thumbnail' / file_name)
-    c = cover._get_dominant_color(img)
-    assert c == color
-
-
-@pytest.mark.parametrize('bg_color,text_color', [
-    ((100, 0, 0), (255, 255, 255)),
-    ((200, 200, 0), (0, 0, 0)),
-])
-def test_get_text_color(bg_color: types.Color, text_color: types.Color):
-    c = cover._get_text_color(bg_color)
-    assert c == text_color
-
-
-@pytest.mark.parametrize('n_image,title,channel', [
-    (1, 'ThetaDev @ Embedded World 2019', 'ThetaDev'),
-    (2, 'Sintel - Open Movie by Blender Foundation', 'Blender'),
-    (3, 'Systemabsturz Teaser zur DiVOC bb3', 'media.ccc.de'),
-])
-def test_create_cover_image(n_image: int, title: str, channel: str):
-    tn_file = tests.DIR_TESTFILES / 'thumbnail' / f't{n_image}.webp'
-    av_file = tests.DIR_TESTFILES / 'avatar' / f'a{n_image}.jpg'
-    expected_cv_file = tests.DIR_TESTFILES / 'cover' / f'c{n_image}.png'
-
-    tn_image = Image.open(tn_file)
-    av_image = Image.open(av_file)
-    expected_cv_image = Image.open(expected_cv_file)
-
-    cv_image = cover._create_cover_image(tn_image, av_image, title, channel)
-
-    diff = ImageChops.difference(cv_image, expected_cv_image)
-    assert diff.getbbox() is None
-
-
-def test_create_cover_file():
-    tn_file = tests.DIR_TESTFILES / 'thumbnail' / 't1.webp'
-    av_file = tests.DIR_TESTFILES / 'avatar' / 'a1.jpg'
-    expected_cv_file = tests.DIR_TESTFILES / 'cover' / 'c1.png'
-
-    tmpdir_o = tempfile.TemporaryDirectory()
-    tmpdir = Path(tmpdir_o.name)
-    cv_file = tmpdir / 'cover.png'
-
-    cover.create_cover_file(tn_file, av_file, 'ThetaDev @ Embedded World 2019', 'ThetaDev', cv_file)
-
-    cv_image = Image.open(cv_file)
-    expected_cv_image = Image.open(expected_cv_file)
-
-    diff = ImageChops.difference(cv_image, expected_cv_image)
-    assert diff.getbbox() is None
diff --git a/tasks.py b/tests/testfiles/get_cover.py
similarity index 70%
rename from tasks.py
rename to tests/testfiles/get_cover.py
index cafe839..3bbec0d 100644
--- a/tasks.py
+++ b/tests/testfiles/get_cover.py
@@ -1,19 +1,21 @@
+# coding=utf-8
+import sys
 import os
 
-from invoke import task
-
 from ucast import youtube, util, cover
 import tests
 
-
-@task
-def test(c):
-    c.run('pytest tests', pty=True)
+# Mit diesem Skript kann man Coverbilder zum Testen erzeugen
+# python tests/testfiles/get_cover.py <Video-ID>
 
 
-@task
-def get_cover(c, vid=''):
-    vinfo = youtube.get_video_info(vid)
+if __name__ == '__main__':
+    if len(sys.argv) <= 1:
+        print('No video id given')
+        sys.exit(1)
+
+    video_id = sys.argv[1]
+    vinfo = youtube.get_video_info(video_id)
     title = vinfo['fulltitle']
     channel_name = vinfo['uploader']
     thumbnail_url = youtube.get_thumbnail_url(vinfo)
diff --git a/ucast/cover.py b/ucast/cover.py
index 7dd523b..e4a4aa7 100644
--- a/ucast/cover.py
+++ b/ucast/cover.py
@@ -1,6 +1,5 @@
 # coding=utf-8
 import math
-from pathlib import Path
 from typing import Tuple, List, Optional
 
 from PIL import Image, ImageDraw, ImageFont
@@ -160,8 +159,8 @@ def _create_cover_image(thumbnail: Image.Image, avatar: Optional[Image.Image], t
     return cover
 
 
-def create_cover_file(thumbnail_path: Path, avatar_path: Optional[Path], title: str, channel: str,
-                      cover_path: Path):
+def create_cover_file(thumbnail_path: types.Path, avatar_path: Optional[types.Path], title: str, channel: str,
+                      cover_path: types.Path):
     thumbnail = Image.open(thumbnail_path)
 
     avatar = None
diff --git a/ucast/model.py b/ucast/model.py
deleted file mode 100644
index 87062c3..0000000
--- a/ucast/model.py
+++ /dev/null
@@ -1,3 +0,0 @@
-# coding=utf-8
-
-
diff --git a/ucast/storage.py b/ucast/storage.py
deleted file mode 100644
index 266aca2..0000000
--- a/ucast/storage.py
+++ /dev/null
@@ -1,44 +0,0 @@
-# coding=utf-8
-import os
-from pathlib import Path
-
-UCAST_DIRNAME = '.ucast'
-
-
-class ChannelFolder:
-    def __init__(self, dir_root: Path):
-        self.dir_root = dir_root
-        dir_ucast = self.dir_root / UCAST_DIRNAME
-
-        self.file_videos = dir_ucast / 'videos.json'
-        self.file_options = dir_ucast / 'options.json'
-        self.file_avatar = dir_ucast / 'avatar.png'
-        self.file_feed = dir_ucast / 'feed.xml'
-        self.dir_covers = dir_ucast / 'covers'
-
-    def does_exist(self) -> bool:
-        return os.path.isdir(self.dir_covers)
-
-    def create(self):
-        os.makedirs(self.dir_covers, exist_ok=True)
-
-
-class Storage:
-    def __init__(self, config_dir: Path, data_dir: Path):
-        self.dir_config = config_dir
-        self.dir_data = data_dir
-
-    def get_channel_folder(self, channel_name: str):
-        cf = ChannelFolder(self.dir_data / channel_name)
-        if not cf.does_exist():
-            raise FileNotFoundError('channel folder does not exist')
-
-        return cf
-
-    def create_channel_folder(self, channel_name: str):
-        cf = ChannelFolder(self.dir_data / channel_name)
-        if cf.does_exist():
-            raise FileExistsError('channel folder already exists')
-
-        cf.create()
-        return cf
diff --git a/ucast/types.py b/ucast/types.py
index 99876b6..2b54726 100644
--- a/ucast/types.py
+++ b/ucast/types.py
@@ -3,3 +3,4 @@ from os import PathLike
 from typing import Tuple, Union
 
 Color = Tuple[int, int, int]
+Path = Union[str, bytes, PathLike]