Using embedded assets plugin to display youtube or vimeo embed urls on a template
You need to define your assets, if the asset field is named videoEmbed in your matrix matrixFieldHandle you would loop through the matrix and grab the first asset with:

{% for block in entry.matrixFieldHandle %}

  {% set asset = block.videoEmbed.first() %}

  {% set embed = craft.embeddedAssets.fromAsset(asset) %}

  {% if embed %}
    {{ embed.safeHtml|raw }}
  {% endif %}

{% endfor %}


You can find additional information about matrix-fields and templating here: https://craftcms.com/docs/matrix-fields#templating