diff --git a/src/engine/base.py b/src/engine/base.py
index 14ccd0d1..0ecf6698 100644
--- a/src/engine/base.py
+++ b/src/engine/base.py
@@ -143,7 +143,7 @@ def get_cache_fileid(self):
         return self._redis.get_send_cache(unique)
 
     @abstractmethod
-    def _setup_formats(self):
+    def _setup_formats(self) -> list | None:
         pass
 
     @abstractmethod
diff --git a/src/engine/direct.py b/src/engine/direct.py
index 4d7757e8..e641a269 100644
--- a/src/engine/direct.py
+++ b/src/engine/direct.py
@@ -21,7 +21,7 @@ class DirectDownloader(BaseDownloader):
     def start(self):
         pass
 
-    def _setup_formats(self):
+    def _setup_formats(self) -> list | None:
         pass
 
     def _requests_download(self):
diff --git a/src/engine/generic.py b/src/engine/generic.py
index 6c4801d5..1902b5a6 100644
--- a/src/engine/generic.py
+++ b/src/engine/generic.py
@@ -3,6 +3,9 @@
 
 # ytdlbot - generic.py
 
+from pathlib import Path
+
+import yt_dlp
 from base import BaseDownloader
 from pyrogram import types
 
@@ -11,7 +14,7 @@
 
 class YoutubeDownload(BaseDownloader):
 
-    def _setup_formats(self):
+    def _setup_formats(self) -> list | None:
         download = get_download_settings(self._user_id)
         formats = []
         # "high", "medium", "low", "audio", "custom"
@@ -33,13 +36,21 @@ def _setup_formats(self):
             if temp_row:
                 markup.append(temp_row)
             self._bot_msg.__edit_text("Choose the format", reply_markup=types.InlineKeyboardMarkup(markup))
-            return
+            return None
         if download == "audio":
             # download audio only
             formats.append("bestaudio")
         elif download == "high":
-            # download high quality video
-            formats.append("best")
+            # default config
+            formats.extend(
+                [
+                    # webm , vp9 and av01 are not streamable on telegram, so we'll extract only mp4
+                    "bestvideo[ext=mp4][vcodec!*=av01][vcodec!*=vp09]+bestaudio[ext=m4a]/bestvideo+bestaudio",
+                    "bestvideo[vcodec^=avc]+bestaudio[acodec^=mp4a]/best[vcodec^=avc]/best",
+                    None,
+                ]
+            )
+
         elif download == "medium":
             # download medium quality video
             formats.append("medium")
@@ -49,10 +60,34 @@ def _setup_formats(self):
         return formats
 
     def _download(self, formats):
-        pass
+        output = Path(self._tempdir, "%(title).70s.%(ext)s").as_posix()
+
+        ydl_opts = {
+            "progress_hooks": [lambda d: self.download_hook(d)],
+            "outtmpl": output,
+            "restrictfilenames": False,
+            "quiet": True,
+        }
+
+        if self._url.startswith("https://drive.google.com"):
+            # Always use the `source` format for Google Drive URLs.
+            formats = ["source"] + formats
+
+        files = None
+        for f in formats:
+            ydl_opts["format"] = f
+            with yt_dlp.YoutubeDL(ydl_opts) as ydl:
+                ydl.download([self._url])
+            files = list(Path(self._tempdir).glob("*"))
+            break
+
+        return files
 
     def start(self, formats=None):
-        if formats is None:
-            formats = self._setup_formats()
-        self._download(formats)
+        # user can choose format by clicking on the button(custom config)
+        default_formats = self._setup_formats()
+        if formats is not None:
+            # formats according to user choice
+            default_formats = formats + self._setup_formats()
+        self._download(default_formats)
         self._upload()
diff --git a/src/engine/helper.py b/src/engine/helper.py
index 25ee57c1..0ea80a73 100644
--- a/src/engine/helper.py
+++ b/src/engine/helper.py
@@ -33,47 +33,6 @@
 from utils import shorten_url, sizeof_fmt
 
 
-def ytdl_download(url: str, tempdir, bm, formats: list = None) -> list:
-    output = pathlib.Path(tempdir, "%(title).70s.%(ext)s").as_posix()
-    default_formats = [
-        # webm , vp9 and av01 are not streamable on telegram, so we'll extract only mp4
-        "bestvideo[ext=mp4][vcodec!*=av01][vcodec!*=vp09]+bestaudio[ext=m4a]/bestvideo+bestaudio",
-        "bestvideo[vcodec^=avc]+bestaudio[acodec^=mp4a]/best[vcodec^=avc]/best",
-        None,
-    ]
-    if formats:
-        default_formats = formats + default_formats
-
-    ydl_opts = {
-        "progress_hooks": [lambda d: download_hook(d, bm)],
-        "outtmpl": output,
-        "restrictfilenames": False,
-        "quiet": True,
-    }
-    if ENABLE_ARIA2:
-        ydl_opts["external_downloader"] = "aria2c"
-        ydl_opts["external_downloader_args"] = [
-            "--min-split-size=1M",
-            "--max-connection-per-server=16",
-            "--max-concurrent-downloads=16",
-            "--split=16",
-        ]
-
-    if url.startswith("https://drive.google.com"):
-        # Always use the `source` format for Google Drive URLs.
-        default_formats = ["source"]
-
-    video_paths = None
-    for f in default_formats:
-        ydl_opts["format"] = f
-        with yt_dlp.YoutubeDL(ydl_opts) as ydl:
-            ydl.download([url])
-        video_paths = list(pathlib.Path(tempdir).glob("*"))
-        break
-
-    return video_paths
-
-
 def debounce(wait_seconds):
     """
     Thread-safe debounce decorator for functions that take a message with chat.id and msg.id attributes.
diff --git a/src/engine/instagram.py b/src/engine/instagram.py
index d64a9559..3921a7f2 100644
--- a/src/engine/instagram.py
+++ b/src/engine/instagram.py
@@ -40,7 +40,7 @@ def extract_code(self):
 
         return None
 
-    def _setup_formats(self):
+    def _setup_formats(self) -> list | None:
         pass
 
     def _download(self, formats):