is it knock or bad motor mounts?

[zapman2000]

hi all looking for some help not sure what it is since ive never had an engine rock like this
and dont know what knock sounds like heres a video of it

thanks for any help
[youtube]http://www.youtube.com/watch?v=7JXZmtMt69c[/youtube]

[canyouSAY240]

In my opinion thats for sure a knocking cuz i have that same nise in my ka-e. what does it sound like when you rev it a little like 3000? if you have nothing to do drop the oil pan and see if you have any play between the crank and the connecting rods...