Update 'Disable Autoplaying Sounds' for Youtube videos.

src/General/css/style.css

@@ -107,6 +107,12 @@ audio.controls-added {
   display: block;
   margin: auto;
 }
+:root.anti-autoplay div.embed {
+  position: static;
+  width: auto;
+  height: auto;
+  text-align: center;
+}
 
 /* fixed, z-index */
 #overlay,

src/Miscellaneous/AntiAutoplay.coffee

@@ -1,8 +1,13 @@
 AntiAutoplay =
   init: ->
     return if !Conf['Disable Autoplaying Sounds']
+    $.addClass doc, 'anti-autoplay'
     @stop audio for audio in $$ 'audio[autoplay]', doc
     window.addEventListener 'loadstart', ((e) => @stop e.target), true
+    Post.callbacks.push
+      name: 'Disable Autoplaying Sounds'
+      cb:   @node
+    $.ready => @stopYoutube d.body
 
   stop: (audio) ->
     return unless audio.autoplay
@@ -11,3 +16,10 @@ AntiAutoplay =
     return if audio.controls
     audio.controls = true
     $.addClass audio, 'controls-added'
+
+  node: ->
+    AntiAutoplay.stopYoutube @nodes.root
+
+  stopYoutube: (root) ->
+    for iframe in $$ 'iframe[src*="youtube"][src*="autoplay=1"]', root
+      iframe.src = iframe.src.replace(/\?autoplay=1&?/, '?').replace('&autoplay=1', '')