diff --git a/site/example.js b/site/example.js
index 4007931..2f4ef08 100644
--- a/site/example.js
+++ b/site/example.js
@@ -146,16 +146,15 @@ async function start() {
         // registers a loadeddata handler which then registers a play handler)
         video_el.addEventListener('loadeddata', async function () {
             try {
-                if (!document.fullscreenElement) {
-                    await document.documentElement.requestFullscreen();
-                }
-
                 // make canvas same size as native video dimensions so every pixel is seen
                 const portrait = this.videoHeight > this.videoWidth;
                 if (portrait) {
                     canvas_el.width = this.videoHeight;
                     canvas_el.height = this.videoWidth;
                     canvas_el.classList.add('portrait');
+                    if (!document.fullscreenElement) {
+                        await document.documentElement.requestFullscreen();
+                    }
                     screen.orientation.lock('portrait');
                 } else {
                     canvas_el.width = this.videoWidth;
diff --git a/webm-muxer.js b/webm-muxer.js
index 27a41fd..69f1c29 160000
--- a/webm-muxer.js
+++ b/webm-muxer.js
@@ -1 +1 @@
-Subproject commit 27a41fd9dae55440219820dc5523fbf4a41da81f
+Subproject commit 69f1c29358a2d993683d8bd53772d0971de5493f