The OV519 chip is used in some cheap webcams - for example, from DSE (product code XH5096) sold as "Internet Camera with Microphone".

Linux Support

The 2.6 series LinuxKernel (as of 2.6.7 at least) come with support for webcams that use the similar OV511 chip, but not these WebCams.

However, there is a driver (licensed under the GPL) that you can download from http://alpha.dyndns.org/ov511/download.html#ov51x - the module will be called ov51x. It should work with 2.2, 2,4 and 2.6 kernels.

Unfortunately, these cameras serve images up in JPEG format only, and this behaviour will require application-level support. No webcam software for linux seems to handle this (yet).

Best bet (for now) is to get a camera with better linux support.