We develop and maintain a free open source (licensed GPL) driver for our line of hardware compression video capture cards.  This driver is freely available on our Github page.

Previous articles about Bluecherry’s hardware compression card:

Bluecherry Releases GPL’d MPEG-4 Driver (Slashdot)
GPL’d Driver and Linux Support For New H.264 Capture Card (Slashdot)

A bug tracker for this driver is available here: