diff --git a/SignItVideosGallery.js b/SignItVideosGallery.js
index 2c9a53f..9e8b907 100644
--- a/SignItVideosGallery.js
+++ b/SignItVideosGallery.js
@@ -41,7 +41,7 @@ SignItVideosGallery.prototype.refresh = async function ( files ) {
 		console.log(await banana.i18n("si-panel-videos-gallery-attribution",url, speaker, i+1, total));
 		this.$videos.push( $( `
 			<div style="display: none;">
-				<video controls="" muted="" preload="auto" src="${ files[ i ].filename }" width="250" class=""></video>
+				<iframe controls="" muted="" preload="auto" src="${ files[ i ].filename }" class="" allow="autoplay *"></iframe>
 				${await banana.i18n("si-panel-videos-gallery-attribution",url, speaker, i+1, total)}
 			</div>
 		` ) );
@@ -57,7 +57,7 @@ SignItVideosGallery.prototype.switchVideo = function ( newIndex ) {
 	this.$videos[ this.currentIndex ].hide();
 	this.currentIndex = newIndex;
 	this.$videos[ this.currentIndex ].show();
-	$currentVideo = this.$videos[ this.currentIndex ].children( 'video' )[ 0 ];
+	$currentVideo = this.$videos[ this.currentIndex ].children( 'iframe' )[ 0 ];
 
 	$( async function () {
 		param = await browser.storage.local.get( 'twospeed' );
@@ -84,9 +84,6 @@ SignItVideosGallery.prototype.switchVideo = function ( newIndex ) {
 		}
 	})
 
-	// After switching, play
-	$currentVideo.play();
-
 	// Arrows disables when on edges
 	this.currentIndex === 0 ?
 		this.previousVideoButton.setDisabled( true )
diff --git a/background-script.js b/background-script.js
index 5375542..a11d4d7 100644
--- a/background-script.js
+++ b/background-script.js
@@ -332,24 +332,6 @@ async function checkActiveTabInjections( tab ) {
 	}
 }
 
-// Edit the header of all pages on-the-fly to bypass Content-Security-Policy
-browser.webRequest.onHeadersReceived.addListener(info => {
-    const headers = info.responseHeaders; // original headers
-    for (let i=headers.length-1; i>=0; --i) {
-        let header = headers[i].name.toLowerCase();
-        if (header === "content-security-policy") { // csp header is found
-            // modifying media-src; this implies that the directive is already present
-            headers[i].value = headers[i].value.replace("media-src", "media-src https://commons.wikimedia.org https://upload.wikimedia.org");
-        }
-    }
-    // return modified headers
-    return {responseHeaders: headers};
-}, {
-    urls: [ "<all_urls>" ], // match all pages
-    types: [ "main_frame" ] // to focus only the main document of a tab
-}, ["blocking", "responseHeaders"]);
-
-
 /* *************************************************************** */
 /* Browser interactions ****************************************** */
 var callModal = async function(msg){
diff --git a/content_scripts/signit.css b/content_scripts/signit.css
index 0d7697c..d4a3bab 100644
--- a/content_scripts/signit.css
+++ b/content_scripts/signit.css
@@ -69,7 +69,7 @@
   align-items: center;
 }
 
-.signit-video video {
+.signit-video iframe {
   box-shadow: 0 0 0.5rem #999;
   width: 100%;
 }
diff --git a/content_scripts/wpintegration.css b/content_scripts/wpintegration.css
index 83876ef..cd9d733 100644
--- a/content_scripts/wpintegration.css
+++ b/content_scripts/wpintegration.css
@@ -6,7 +6,7 @@
 	max-width: 300px;
 }
 
-.signit-inline-container video {
+.signit-inline-container iframe {
 	box-shadow: 0 0 .5rem #999;
 }
 
diff --git a/manifest.json b/manifest.json
index 46a9f54..2c03f8c 100644
--- a/manifest.json
+++ b/manifest.json
@@ -16,9 +16,9 @@
     "contextMenus",
     "storage",
     "webRequest",
-    "webRequestBlocking",
     "alarms"
   ],
+  "host_permissions":["https://*/*"],
   "content_scripts": [
     {
       "matches": [
diff --git a/popup/popup.css b/popup/popup.css
index 2cbcc41..92f8591 100644
--- a/popup/popup.css
+++ b/popup/popup.css
@@ -185,7 +185,7 @@ html, body {
 	align-items: center;
 }
 
-.signit-video video {
+.signit-video iframe {
 	box-shadow: 0 0 .5rem #999;
 	width: 345px;
 }
diff --git a/rules.json b/rules.json
new file mode 100644
index 0000000..855c669
--- /dev/null
+++ b/rules.json
@@ -0,0 +1,22 @@
+[
+    {
+        "id": 1,
+        "priority": 1,
+        "action": {
+            "type": "modifyHeaders",
+            "responseHeaders": [
+                {
+                    "header": "Content-Security-Policy",
+                    "operation": "set",
+                    "value": "media-src https://commons.wikimedia.org https://upload.wikimedia.org"
+                }
+            ]
+        },
+        "condition": {
+            "urlFilter": "|https*",
+            "resourceTypes": [
+                "main_frame"
+            ]
+        }
+    }
+]
\ No newline at end of file