fix subtitles request lang, fix yandex subtitles without tokens

src/subtitles.js

@@ -73,14 +73,16 @@ function getSubtitlesTokens(subtitles, subtitlesObject) {
   const { source, isAutoGenerated } = subtitlesObject;
   for (let i = 0; i < subtitles.subtitles.length; i++) {
     const line = subtitles.subtitles[i];
-    if (line?.tokens?.length && !["yandex", "youtube"].includes(source)) {
+    const hasTokens = line?.tokens?.length;
+    if (hasTokens && !["yandex", "youtube"].includes(source)) {
       console.warn("[VOT] Unsupported subtitles tokens type: ", source);
       subtitles.containsTokens = false;
       return null;
     }
 
     let tokens =
-      source === "yandex" || (source === "youtube" && isAutoGenerated)
+      hasTokens &&
+      (source === "yandex" || (source === "youtube" && isAutoGenerated))
         ? formatYandexSubtitlesTokens(line)
         : createSubtitlesTokens(line, lastToken);
     lastToken = tokens[tokens.length - 1];
@@ -180,7 +182,13 @@ export async function fetchSubtitles(subtitlesObject) {
 }
 
 export async function getSubtitles(client, videoData) {
-  const { host, url, requestLang, videoId, duration } = videoData;
+  const {
+    host,
+    url,
+    detectedLanguage: requestLang,
+    videoId,
+    duration,
+  } = videoData;
   const ytSubtitles = host === "youtube" ? youtubeUtils.getSubtitles() : [];
 
   const timeoutPromise = new Promise((_, reject) =>