Add YouTube video to your TinyMCE content
cd /your-tinymce-path/plugins
git clone https://github.com/vittominacori/tinymce-youtube-plugin.git
mv tinymce-youtube-plugin youtube
<script>
tinymce.init({
selector: 'textarea',
height: 500,
plugins: [ 'youtube' ],
toolbar: 'youtube'
});
</script>