How to render every Nth frame?

I’m looking for a way to render every other or every Nth frame of an animation. I’ve played around in Blender and also searched the docs and the forum. I did find a thread posted by celeric in 2004. In the thread, he links to a script that he wrote, but that link has since gone dead.

I’m looking to use it for previewing. Thanks to all who answer.

Add your scene strip to the sequencer (SpaceBar > Scene) then add a speed control to it (SpaceBar > Speed Control). Right click on the right end of the scene strip and drag it to 50% of it’s original length to render every other frame, etc…