diff --git a/src/viewer/index.js b/src/viewer/index.js
index 6ff493f..3b2b4ae 100644
--- a/src/viewer/index.js
+++ b/src/viewer/index.js
@@ -323,13 +323,21 @@ function filterValidTabs(tabs) {
 
 /**
  * Probe all frames in a tab for HLS manifests.
+ * Runs in the MAIN world so strategies that depend on page globals work:
+ *   - window.__goon_plugin_data.manifests (set by main-world interceptors)
+ *   - window.Hls / Hls.cast (page's hls.js global)
+ *   - player globals (PHPlayer, flowplayer, etc.)
+ *   - config globals (__NEXT_DATA__, appData, etc.)
+ *
+ * The default isolated world cannot see these — only DOM properties like
+ * video._goon_hls_manifest cross the boundary.
  * @param {number} tabId
  * @returns {Promise<Array>} array of { url, player } or empty on error
  */
 async function probeHlsManifests(tabId) {
   try {
     const results = await chrome.scripting.executeScript({
-      target: { tabId, allFrames: true },
+      target: { tabId, allFrames: true, world: 'MAIN' },
       func: m3u8DeepProbeFn,
     });
     return results.flatMap(r => r.result || []);
@@ -384,6 +392,13 @@ async function queryContentScript(tabId) {
  * Scrape video elements from ALL frames in a tab.
  * On sites like Pornhub, the video player lives inside an iframe — main-frame-only
  * scraping sees zero <video> elements. Running allFrames catches them.
+ *
+ * Runs in the MAIN world so it can see page globals:
+ *   - Hls.cast(video) — the official hls.js API to get bound instances
+ *   - window.__goon_plugin_data (interceptor-collected manifests)
+ *
+ * The default isolated world would miss all of these, causing the same
+ * "does not detect any videos" failure kfj001 reported.
  * @param {number} tabId
  * @param {Array} manifests - HLS manifests found by probing
  * @returns {Promise<Object|null>} scrape result or null on error
@@ -391,7 +406,7 @@ async function queryContentScript(tabId) {
 async function scrapeTab(tabId, manifests) {
   try {
     const results = await chrome.scripting.executeScript({
-      target: { tabId, allFrames: true },
+      target: { tabId, allFrames: true, world: 'MAIN' },
       func: scrapeFn,
       args: [manifests],
     });