The quality of iPhone 4 video can be great – but it can also be nauseating because it tends to be so jerky.

Tiffen has an interesting solution – the Steadicam Smoothee. It’s basically an affordable (under $200) iPhone Steadicam.  It’s available for Motorola Droid and Flip Mini, too.

Here’s a more in-depth look at the Steadicam Smoothee and how it works:

No word yet on when the Steadicam Smoothee will be available.

Of course – there are a lot of DIY alternatives, too.

Here’ a design and demo of a $30 steadicam:

And here’s a demo of the $0 tripod steadicam:

Both these options are intended for video cameras, but could be adapted for iPhones and other lightweight camcorders, too.