diff --git a/package.json b/package.json
index 102f921e7..6b39b2dbd 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "misskey",
-	"version": "12.119.0-simkey-v5",
+	"version": "12.119.0-simkey-v7",
 	"codename": "indigo",
 	"repository": {
 		"type": "git",
diff --git a/packages/client/src/components/MkPageWindow.vue b/packages/client/src/components/MkPageWindow.vue
index d58b91403..dfd198d96 100644
--- a/packages/client/src/components/MkPageWindow.vue
+++ b/packages/client/src/components/MkPageWindow.vue
@@ -141,4 +141,7 @@ defineExpose({
 	min-height: 100%;
 	background: var(--bg);
 }
+.yrolvcoq:has(.fill) {
+	height: 100%;
+}
 </style>
diff --git a/packages/client/src/components/MkUrlPreview.vue b/packages/client/src/components/MkUrlPreview.vue
index 9b2a78535..2f49d4793 100644
--- a/packages/client/src/components/MkUrlPreview.vue
+++ b/packages/client/src/components/MkUrlPreview.vue
@@ -10,7 +10,7 @@
 	<transition :name="$store.state.animation ? 'zoom' : ''" mode="out-in">
 		<component :is="self ? 'MkA' : 'a'" v-if="!fetching" class="link" :class="{ compact }" :[attr]="self ? url.substr(local.length) : url" rel="nofollow noopener" :target="target" :title="url">
 			<div v-if="thumbnail" class="thumbnail" :style="`background-image: url('${thumbnail}')`">
-				<button v-if="!playerEnabled && player.url" class="_button" :title="i18n.ts.enablePlayer" @click.prevent="playerEnabled = true"><i class="fas fa-play-circle"></i></button>
+				<button v-if="!playerEnabled && player.url" class="_button" :title="i18n.ts.enablePlayer" @click.prevent="isMobile? playerEnabled = true : openPlayer()"><i class="fas fa-play-circle"></i></button>
 			</div>
 			<article>
 				<header>
@@ -36,6 +36,8 @@
 import { onMounted, onUnmounted } from 'vue';
 import { url as local, lang } from '@/config';
 import { i18n } from '@/i18n';
+import * as os from '@/os';
+import { deviceKind } from '@/scripts/device-kind';
 
 const props = withDefaults(defineProps<{
 	url: string;
@@ -46,6 +48,9 @@ const props = withDefaults(defineProps<{
 	compact: false,
 });
 
+const MOBILE_THRESHOLD = 500;
+const isMobile = $ref(deviceKind === 'smartphone' || window.innerWidth <= MOBILE_THRESHOLD);
+
 const self = props.url.startsWith(local);
 const attr = self ? 'to' : 'href';
 const target = self ? null : '_blank';
@@ -103,6 +108,10 @@ function adjustTweetHeight(message: any) {
 	if (height) tweetHeight = height;
 }
 
+const openPlayer = () => {
+	os.pageWindow(`/ytplayer/${encodeURIComponent(requestUrl.href)}`);
+};
+
 (window as any).addEventListener('message', adjustTweetHeight);
 
 onUnmounted(() => {
diff --git a/packages/client/src/pages/ytplayer.vue b/packages/client/src/pages/ytplayer.vue
new file mode 100644
index 000000000..bbd758ece
--- /dev/null
+++ b/packages/client/src/pages/ytplayer.vue
@@ -0,0 +1,86 @@
+<template>
+  <div class="poamfof fill">
+      <transition :name="$store.state.animation ? 'fade' : ''" mode="out-in">
+          <div v-if="player.url" class="player">
+	          <iframe v-if="!fetching" :src="player.url + (player.url.match(/\?/) ? '&autoplay=1&auto_play=1' : '?autoplay=1&auto_play=1')" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen/>
+          </div>
+      </transition>
+			<MkLoading v-if="fetching" />
+      <MkError v-else-if="!player.url" @retry="ytFetch()" />
+  </div>
+</template>
+
+<script lang="ts" setup>
+import { definePageMetadata } from '@/scripts/page-metadata';
+import { computed } from 'vue';
+import { lang } from '@/config';
+
+const props = defineProps<{
+    url: string;
+}>();
+
+console.log(props.url);
+
+const requestUrl = new URL(props.url);
+
+let fetching = $ref(true);
+let title = $ref<string | null>(null);
+let player = $ref({
+    url: null,
+    width: null,
+    height: null,
+});
+
+const requestLang = (lang || 'ja-JP').replace('ja-KS', 'ja-JP');
+
+const ytFetch = () => {
+	fetching = true;
+	fetch(`/url?url=${encodeURIComponent(requestUrl.href)}&lang=${requestLang}`).then(res => {
+		res.json().then(info => {
+			if (info.url == null) return;
+			title = info.title;
+			fetching = false;
+			player = info.player;
+		});
+	});
+}
+
+ytFetch();
+
+definePageMetadata(computed(() => props.url ? {
+	title: title?.toString() || 'Youtube Player',
+	path: `/notes/${props.url}`,
+	icon: 'fa-brands fa-youtube'
+} : null));
+
+console.log(await player.url);
+</script>
+
+<style lang="scss">
+.poamfof {
+	position: relative;
+	overflow: hidden;
+	min-height: 64px;
+
+	.player {
+		position: absolute;
+		top: 0;
+		left: 0;
+		right: 0;
+		bottom: 0;
+		height: calc(100% - 10px);
+		width: calc(100% - 10px);
+		padding: 5px;
+
+		iframe {
+			width: 100%;
+			height: 100%;
+			border-radius: 0 0 var(--radius) var(--radius);
+		}
+	}
+}
+
+.fill {
+	height: 100%;
+}
+</style>
diff --git a/packages/client/src/router.ts b/packages/client/src/router.ts
index 8ff480616..1e2fd2207 100644
--- a/packages/client/src/router.ts
+++ b/packages/client/src/router.ts
@@ -449,6 +449,9 @@ export const routes = [{
 	path: '/timeline/antenna/:antennaId',
 	component: page(() => import('./pages/antenna-timeline.vue')),
 	loginRequired: true,
+}, {
+	path: '/ytplayer/:url',
+	component: page(() => import('./pages/ytplayer.vue')),
 }, {
 	name: 'index',
 	path: '/',