From 457296317595360e916eb051f847aa736efdde2f Mon Sep 17 00:00:00 2001
From: ScreenTinker <hello@screentinker.com>
Date: Tue, 9 Jun 2026 15:36:24 -0500
Subject: [PATCH] fix(android): YouTube error 152 - embed under a third-party
 domain, not youtube.com

The player loaded the YouTube embed via loadDataWithBaseURL with base
https://www.youtube.com, so the embedding page claimed to BE youtube.com hosting
a youtube.com iframe. YouTube rejects that as an invalid embed context -> 'This
video is unavailable / Error 152 - 4' for every video (reproduced on a Pixel 10
/ Android 16 emulator with multiple known-embeddable videos).

Load the embed under a real third-party domain (EMBED_BASE = the product domain)
so the referrer is a legitimate embedding site. The iframe still points at
youtube.com/embed. Verified: video now plays. (The earlier base=youtube.com was
the Error 153 fix; this supersedes it - a normal domain referrer fixes 153 too.)
---
 .../com/remotedisplay/player/player/MediaPlayerManager.kt   | 2 +-
 .../java/com/remotedisplay/player/player/ZoneManager.kt     | 2 +-
 .../java/com/remotedisplay/player/util/WebViewSupport.kt    | 6 ++++++
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/android/app/src/main/java/com/remotedisplay/player/player/MediaPlayerManager.kt b/android/app/src/main/java/com/remotedisplay/player/player/MediaPlayerManager.kt
index eec1910..c7c1c53 100644
--- a/android/app/src/main/java/com/remotedisplay/player/player/MediaPlayerManager.kt
+++ b/android/app/src/main/java/com/remotedisplay/player/player/MediaPlayerManager.kt
@@ -59,7 +59,7 @@ class MediaPlayerManager(
             setBackgroundColor(android.graphics.Color.BLACK)
             // Load via an embed wrapper with a valid youtube.com origin (Error 153 fix).
             val html = com.remotedisplay.player.util.WebViewSupport.youtubeEmbedHtml(embedUrl)
-            if (html != null) loadDataWithBaseURL(com.remotedisplay.player.util.WebViewSupport.YT_BASE, html, "text/html", "UTF-8", null)
+            if (html != null) loadDataWithBaseURL(com.remotedisplay.player.util.WebViewSupport.EMBED_BASE, html, "text/html", "UTF-8", null)
             else loadUrl(embedUrl)
         }
     }
diff --git a/android/app/src/main/java/com/remotedisplay/player/player/ZoneManager.kt b/android/app/src/main/java/com/remotedisplay/player/player/ZoneManager.kt
index 68c435b..a769f43 100644
--- a/android/app/src/main/java/com/remotedisplay/player/player/ZoneManager.kt
+++ b/android/app/src/main/java/com/remotedisplay/player/player/ZoneManager.kt
@@ -159,7 +159,7 @@ class ZoneManager(
             mimeType == "video/youtube" && !remoteUrl.isNullOrEmpty() -> {
                 val webView = createWebView()
                 val html = com.remotedisplay.player.util.WebViewSupport.youtubeEmbedHtml(remoteUrl)
-                if (html != null) webView.loadDataWithBaseURL(com.remotedisplay.player.util.WebViewSupport.YT_BASE, html, "text/html", "UTF-8", null)
+                if (html != null) webView.loadDataWithBaseURL(com.remotedisplay.player.util.WebViewSupport.EMBED_BASE, html, "text/html", "UTF-8", null)
                 else webView.loadUrl(remoteUrl)
                 webView.layoutParams = params
                 container.addView(webView); zoneViews[zone.id] = webView
diff --git a/android/app/src/main/java/com/remotedisplay/player/util/WebViewSupport.kt b/android/app/src/main/java/com/remotedisplay/player/util/WebViewSupport.kt
index d9cbcd8..cadc9bf 100644
--- a/android/app/src/main/java/com/remotedisplay/player/util/WebViewSupport.kt
+++ b/android/app/src/main/java/com/remotedisplay/player/util/WebViewSupport.kt
@@ -23,6 +23,12 @@ import android.webkit.WebViewClient
 object WebViewSupport {
 
     const val YT_BASE = "https://www.youtube.com"
+    // Base URL the embed page is loaded under (its referrer to YouTube). It must be
+    // a normal embedding site, NOT youtube.com itself — a page claiming to be
+    // youtube.com embedding a youtube.com iframe is rejected as an invalid embed
+    // context ("This video is unavailable / Error 152"). A real third-party domain
+    // is what legitimate embeds use.
+    const val EMBED_BASE = "https://screentinker.com"
 
     fun configure(webView: WebView, tag: String) {
         webView.settings.apply {