From dcf76f7592ee8e143f7b76f30267fc37a6a61427 Mon Sep 17 00:00:00 2001
From: absidue <48293849+absidue@users.noreply.github.com>
Date: Thu, 14 Aug 2025 19:11:38 +0200
Subject: [PATCH] Make MWEB return the original audio track

---
 src/renderer/helpers/api/local.js | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/renderer/helpers/api/local.js b/src/renderer/helpers/api/local.js
index 357e42a038cc8..a2e84f9566985 100644
--- a/src/renderer/helpers/api/local.js
+++ b/src/renderer/helpers/api/local.js
@@ -230,7 +230,18 @@ export async function getLocalVideoInfo(id) {
 
   const info = await webInnertube.getInfo(id, { po_token: contentPoToken })
 
-  // temporary workaround for SABR-only responses
+  // #region temporary workaround for SABR-only responses
+
+  // MWEB doesn't have an audio track selector so it picks the audio track on the server based on the request language.
+
+  const originalAudioTrackFormat = info.streaming_data?.adaptive_formats.find(format => {
+    return format.has_audio && format.is_original && format.language
+  })
+
+  if (originalAudioTrackFormat) {
+    webInnertube.session.context.client.hl = originalAudioTrackFormat.language
+  }
+
   const mwebInfo = await webInnertube.getBasicInfo(id, { client: 'MWEB', po_token: contentPoToken })
 
   if (mwebInfo.playability_status.status === 'OK' && mwebInfo.streaming_data) {
@@ -240,6 +251,8 @@ export async function getLocalVideoInfo(id) {
     clientName = 'MWEB'
   }
 
+  // #endregion temporary workaround for SABR-only responses
+
   let hasTrailer = info.has_trailer
   let trailerIsAgeRestricted = info.getTrailerInfo() === null