diff --git a/tests/scraper_test.py b/tests/scraper_test.py
index 6183081..5ba6c98 100644
--- a/tests/scraper_test.py
+++ b/tests/scraper_test.py
@@ -150,3 +150,21 @@ def test_scrape_video_only2():
         vks.download_media(res, tempdir)
         found_files = set(os.listdir(tempdir))
         assert "video-17546758_456239898_0.mp4" in found_files
+
+
+def test_scrape_private_video():
+    """
+    > Some videos are kept private and cannot be accessed without a passkey . In this case, send the ID in {owner_id}_{video_id}_{access_key}.
+    From https://dev.vk.com/ru/method/video.get
+    """
+    res = vks.scrape("https://vk.com/wall-127774884_178565")
+
+    with tempfile.TemporaryDirectory(dir="./") as tempdir:
+        vks.download_media(res, tempdir)
+        expect_files = {
+            "wall-127774884_178565_0.mp4",
+            "wall-127774884_178565_1.mp4",
+            "wall-127774884_178565_2.mp4",
+        }
+        found_files = set(os.listdir(tempdir))
+        assert len(expect_files) == len(expect_files & found_files)
diff --git a/vk_url_scraper/__main__.py b/vk_url_scraper/__main__.py
index a2a7738..7b721de 100644
--- a/vk_url_scraper/__main__.py
+++ b/vk_url_scraper/__main__.py
@@ -19,7 +19,7 @@ def get_argument_parser():
         action="store",
         dest="username",
         required=True,
-        help="username for a valid vk.com account",
+        help="username for a valid vk.com account (pass empty if using --token)",
     )
     parser.add_argument(
         "-p",
@@ -27,7 +27,7 @@ def get_argument_parser():
         action="store",
         dest="password",
         required=True,
-        help="password for the valid vk.com account",
+        help="password for the valid vk.com account (pass empty if using --token)",
     )
     parser.add_argument(
         "-t",
diff --git a/vk_url_scraper/scraper.py b/vk_url_scraper/scraper.py
index 2b5183b..5360e6a 100644
--- a/vk_url_scraper/scraper.py
+++ b/vk_url_scraper/scraper.py
@@ -37,7 +37,7 @@ class VkScraper:
 
     WALL_PATTERN = re.compile(r"(wall.{0,1}\d+_\d+)")
     PHOTO_PATTERN = re.compile(r"(photo.{0,1}\d+_\d+)")
-    VIDEO_PATTERN = re.compile(r"(video.{0,1}\d+_\d+)")
+    VIDEO_PATTERN = re.compile(r"(video.{0,1}\d+_\d+(?:_\w+)?)")
 
     def __init__(
         self,
@@ -144,10 +144,11 @@ class VkScraper:
                     first_type = a["type"]
                     attachment = a[first_type]
                     if first_type == "video":
+                        video_path = f'video{attachment["owner_id"]}_{attachment["id"]}'
+                        if "access_key" in attachment:
+                            video_path += f"_{attachment['access_key']}"
                         attachments["video"].extend(
-                            self.scrape_videos(f'video{attachment["owner_id"]}_{attachment["id"]}')[
-                                0
-                            ]
+                            self.scrape_videos(video_path)[0]
                             .get("attachments", {})
                             .get("video", [""])
                         )
@@ -352,9 +353,10 @@ class VkScraper:
                             info = ydl.extract_info(url, download=True)
                             filename = ydl.prepare_filename(info)
                             if "unknown_video" in filename:
+                                old_filename = filename
                                 filename = shutil.copy(
-                                    filename, filename.replace("unknown_video", "mkv")
+                                    filename, filename.replace("unknown_video", "mp4")
                                 )
-                                os.remove(filename)
+                                os.remove(old_filename)
                             downloaded.append(filename)
         return downloaded