vq=highres
<iframe width="1920" height="1080" src="//www.youtube.com/embed/EDir9-UoPjo?vq=highres" frameborder="0" allowfullscreen></iframe>
vq=hd1080
<iframe width="1920" height="1080" src="//www.youtube.com/embed/EDir9-UoPjo?vq=hd1080" frameborder="0" allowfullscreen></iframe>
vq=hd720
<iframe width="1280" height="720" src="//www.youtube.com/embed/EDir9-UoPjo?vq=hd720" frameborder="0" allowfullscreen></iframe>
vq=large
<iframe width="854" height="480" src="//www.youtube.com/embed/EDir9-UoPjo?vq=large" frameborder="0" allowfullscreen></iframe>
vq=medium
<iframe width="640" height="360" src="//www.youtube.com/embed/EDir9-UoPjo?vq=medium" frameborder="0" allowfullscreen></iframe>
vq=small
<iframe width="427" height="240" src="//www.youtube.com/embed/EDir9-UoPjo?vq=small" frameborder="0" allowfullscreen></iframe>