establish config defaults

src/app/config/settings.py

@@ -1,16 +1,23 @@
 from __future__ import annotations
 
 import json
+import os
 from pathlib import Path
 from typing import Any, Dict, List, Optional
 
 
+def _default_ffmpeg_path() -> str:
+    if os.name == "nt":
+        return "./bin/ffmpeg.exe"
+    return "./bin/ffmpeg"
+
+
 DEFAULT_CONFIG: Dict[str, Any] = {
     "playlists": [],
-    "download_mode": "audio",
+    "download_mode": "video",
     "max_download_quality": "1080p",
     "save_path": "./downloads",
-    "ffmpeg_path": "ffmpeg",
+    "ffmpeg_path": _default_ffmpeg_path(),
 }
 
 
@@ -40,12 +47,12 @@ class Settings:
             "playlists": [
                 {
                     "url": "https://www.youtube.com/playlist?list=YOUR_PLAYLIST_ID",
-                    "download_mode": "audio",
+                    "download_mode": "video",
                     "max_download_quality": "1080p",
                     "save_path": "./downloads",
                 }
             ],
-            "ffmpeg_path": "ffmpeg",
+            "ffmpeg_path": _default_ffmpeg_path(),
         }
         path.write_text(json.dumps(default_payload, indent=2) + "\n", encoding="utf-8")
 

src/app/core/download/downloader.py

@@ -19,12 +19,16 @@ class Downloader:
     def build_format(max_download_quality) -> str:
         def parse_height_cap(value) -> int | None:
             if value is None:
-                return None
+                return 1080
             if isinstance(value, int):
                 return value if value > 0 else None
             s = str(value).strip().lower()
-            if not s or s in {"best", "max", "auto", "none", "null"}:
+            if not s:
+                return 1080
+            if s in {"best", "max", "auto"}:
                 return None
+            if s in {"none", "null"}:
+                return 1080
             digits = "".join(ch for ch in s if ch.isdigit())
             if not digits:
                 return None