diff --git a/main.py b/main.py
index 70937b4..c849a82 100644
--- a/main.py
+++ b/main.py
@@ -186,16 +186,16 @@ def download_video(
         "no_warnings": True,
         "ignoreerrors": False,
         "noplaylist": True,
-        "format": fmt_expr,
         "merge_output_format": "mp4",
         "force_ipv4": True,
         "geo_bypass": True,
-        "extractor_args": {
-            "youtube": {
-                "player_client": ["android"],
-                "player_skip": ["webpage"]
-            }
+        "extractor_args": {"youtube": {"player_client": ["android"], "player_skip": ["webpage"]}},
+        "http_headers": {
+            "Accept-Language": "pt-BR,pt;q=0.9,en-US;q=0.8,en;q=0.7",
+            "User-Agent": "com.google.android.youtube/19.17.36 (Linux; U; Android 13) gzip",
         },
+        "hls_prefer_native": True,
+        "concurrent_fragment_downloads": 1, 
     }
 
     try:
@@ -204,7 +204,6 @@ def download_video(
             if not info:
                 raise HTTPException(status_code=404, detail="Não foi possível obter informações do vídeo.")
 
-            # Se por acaso vier um wrapper de playlist, pegue a primeira entrada
             if info.get("_type") == "playlist":
                 entries = info.get("entries") or []
                 if not entries:
@@ -290,4 +289,32 @@ def search_youtube_yt_dlp(
         return {"results": results}
 
     except Exception as e:
-        raise HTTPException(status_code=500, detail=f"Erro ao buscar vídeos: {e}")
\ No newline at end of file
+        raise HTTPException(status_code=500, detail=f"Erro ao buscar vídeos: {e}")
+
+@app.get("/list-formats")
+def list_formats(url: str):
+    opts = {
+        "quiet": False,
+        "no_warnings": False,
+        "noplaylist": True,
+        "force_ipv4": True,
+        "geo_bypass": True,
+        "extractor_args": {"youtube": {"player_client": ["android"], "player_skip": ["webpage"]}},
+        "http_headers": {
+            "Accept-Language": "pt-BR,pt;q=0.9,en-US;q=0.8,en;q=0.7",
+            "User-Agent": "com.google.android.youtube/19.17.36 (Linux; U; Android 13) gzip",
+        },
+    }
+    with YoutubeDL(opts) as y:
+        info = y.extract_info(url, download=False)
+        fmts = info.get("formats") or []
+        brief = [{
+            "id": f.get("format_id"),
+            "ext": f.get("ext"),
+            "h": f.get("height"),
+            "fps": f.get("fps"),
+            "v": f.get("vcodec"),
+            "a": f.get("acodec"),
+            "tbr": f.get("tbr"),
+        } for f in fmts]
+    return {"total": len(brief), "formats": brief[:60]}