To set a HapYak project to autoplay when the page loads simply add the query parameter hapyak_autoplay=true to the URL where the video is embedded.
Example:
http://www.hapyak.com/portal/viewer/2011ab957f0bd60d827e2adf4b0ce9b2 will not autoplay.
http://www.hapyak.com/portal/viewer/2011ab957f0bd60d827e2adf4b0ce9b2?hapyak_autoplay=true will autoplay.
Or you can manually add &hapyak_autoplay=true to the embed code.
Example:
This will not autoplay:
<iframe id="hapyak-player-9621-3576" marginwidth="0" marginheight="0" frameborder="no" scrolling="no" allowfullscreen="" webkitallowfullscreen="" mozallowfullscreen="" src="//www.hapyak.com/embed?key=9d2be3d5dfde4a849490&project=11372" width="960" height="599" class="hapyak-embed"></iframe>
This will:
<iframe id="hapyak-player-9621-3576" marginwidth="0" marginheight="0" frameborder="no" scrolling="no" allowfullscreen="" webkitallowfullscreen="" mozallowfullscreen="" src="//www.hapyak.com/embed?key=9d2be3d5dfde4a849490&project=11372&hapyak_autoplay=true" width="960" height="599" class="hapyak-embed"></iframe>