Mechanical Turk

https://www.mturk.com/mturk/

Adding Variables

https://requester.mturk.com/help/getting_started.html#TemplateVariables

Youtube Embed example:

<iframe width="640" height="390" src="//www.youtube.com/embed/k3Vtb_CSlKI" frameborder="0" allowfullscreen></iframe>

Turk embed with variable:

<iframe width="640" height="390" src="{$video_link}" frameborder="0" allowfullscreen></iframe>

Turk video variable example:

<object width="425" height="344"><param name="movie" value="${video_url}"></param><param name="allowFullScreen" value="true"></param><embed src="${video_url}" type="application/x-shockwave-flash" allowfullscreen="true" width="425" height="344"></embed></object>

Turk Steps for video:

http://docs.aws.amazon.com/AWSMechTurk/2011-10-01/RequesterUI/CreatingaHITTemplate.html