Enhance Dockerfile and API for yt-dlp integration

- Install Deno as a JavaScript runtime for yt-dlp in the Dockerfile.
- Add configuration for yt-dlp to support cookies and JavaScript runtime selection.
- Update API to handle cookies for YouTube bot detection and allow specifying the JavaScript runtime.
- Introduce new environment variables for cookie management and JavaScript runtime configuration in README.

src/pages/api/download.ts

@@ -56,8 +56,23 @@ export const POST: APIRoute = async ({ request }) => {
     // Format aus Request Header (optional, Standard: MP4)
     const format = request.headers.get("x-format") || "mp4";
 
+    // Cookie-Unterstützung für YouTube Bot-Erkennung
+    const cookiesFile = process.env.YT_DLP_COOKIES;
+    const cookiesFromBrowser = process.env.YT_DLP_COOKIES_FROM_BROWSER;
+
+    // JavaScript Runtime für yt-dlp (Standard: deno)
+    const jsRuntime = process.env.YT_DLP_JS_RUNTIME || "deno";
+
     // Zuerst Video-Informationen abrufen, um den Dateinamen zu erhalten
-    const videoInfo = await ytDlpWrap.getVideoInfo(url);
+    // getVideoInfo verwendet intern yt-dlp mit --dump-json
+    // Deno wird beim eigentlichen Download verwendet
+    const videoInfoOptions: string[] = [];
+    if (cookiesFile) {
+      videoInfoOptions.push("--cookies", cookiesFile);
+    } else if (cookiesFromBrowser) {
+      videoInfoOptions.push("--cookies-from-browser", cookiesFromBrowser);
+    }
+    const videoInfo = await ytDlpWrap.getVideoInfo(url, videoInfoOptions);
     const title = videoInfo.title || "Video";
 
     // Dateiendung bestimmen
@@ -72,12 +87,13 @@ export const POST: APIRoute = async ({ request }) => {
     const filename = `${title}.${ext}`;
 
     // Format-String für yt-dlp
+    // Für "best": Kein Format-String = yt-dlp wählt automatisch bestes Format und merged
     const formatString =
       format === "mp4"
         ? "bestvideo[ext=mp4]+bestaudio[ext=m4a]/bestvideo[ext=mp4]+bestaudio/best[ext=mp4]/best"
         : format === "audio"
         ? "bestaudio[ext=m4a]/bestaudio[ext=mp3]/bestaudio"
-        : "best";
+        : undefined; // undefined = yt-dlp wählt automatisch bestes Format
 
     if (streamOnly) {
       // STREAM-MODUS: Datei temporär speichern, streamen, dann löschen
@@ -91,12 +107,24 @@ export const POST: APIRoute = async ({ request }) => {
             url,
             "-o",
             tempFilePath,
-            "-f",
-            formatString,
             "--no-mtime",
             "--no-playlist",
+            "--js-runtimes",
+            jsRuntime,
           ];
 
+          // Cookie-Unterstützung hinzufügen
+          if (cookiesFile) {
+            execArgs.push("--cookies", cookiesFile);
+          } else if (cookiesFromBrowser) {
+            execArgs.push("--cookies-from-browser", cookiesFromBrowser);
+          }
+
+          // Format nur hinzufügen wenn definiert
+          if (formatString) {
+            execArgs.push("-f", formatString);
+          }
+
           if (format === "mp4") {
             execArgs.push("--merge-output-format", "mp4");
           } else if (format === "audio") {
@@ -184,12 +212,24 @@ export const POST: APIRoute = async ({ request }) => {
           url,
           "-o",
           outputPath,
-          "-f",
-          formatString,
           "--no-mtime",
           "--no-playlist",
+          "--js-runtimes",
+          jsRuntime,
         ];
 
+        // Cookie-Unterstützung hinzufügen
+        if (cookiesFile) {
+          execArgs.push("--cookies", cookiesFile);
+        } else if (cookiesFromBrowser) {
+          execArgs.push("--cookies-from-browser", cookiesFromBrowser);
+        }
+
+        // Format nur hinzufügen wenn definiert
+        if (formatString) {
+          execArgs.push("-f", formatString);
+        }
+
         if (format === "mp4") {
           execArgs.push("--merge-output-format", "mp4");
         } else if (format === "audio") {