Specifications

Download and install the driver from btwincap.sourceforge.net. This installer allows you to

first un-install any remnants of any other BT8x8 drivers. If your card is not listed as one that is

supported, choose Custom, and be sure to select "no TV tuner" and "no S-video" unless your

card actually has those features.

In Blue Iris, you will see a new DirectShow driver for your card, and the input pin drop down

will allow you to select one of your card's inputs. You may create a new camera for each of

these inputs by using the same DirectShow driver.

You will find that a framerate of about 10 is most appropriate for these cards (which is then

divided among the cameras you add). You may attempt to push this to 15, but at that rate,

you may notice anomalies such as repeated frames, flickering, and images from other cameras,

due to the fact that the card requires some time to switch inputs before a valid image is

available.

Internally, the first camera that is created (usually first alphabetically when starting Blue Iris)

becomes the "parent" and other cameras using the same driver become "dependents" to that

first camera. This means that you should make x,y size and framerate changes on the parent in

order for the changes to take affect, and when you make changes to the parent, the

dependents are automatically reset.

Ideally you should choose a capture card that has 1 BT8x8 chip for each input--this provides a

full 30fps possibility for each camera and is less prone to tearing or image bleeding between

the inputs. An excellent choice is the PV149 card available from bluecherry.net

On 64-bit Windows, it has been found that the 64-bit driver for the Winnov Videum series of

cards works well for many other BT8x8 cards, including the PV149. After installing the driver,

to prevent the use of the crossbar filter, you should run RegEdit and create a new key

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\WnvAvs\VidCap and then add a

DWORD value called "crossbar" with value 0 and reboot.

Another choice for analog capture card is the TW-220 and similar also available from

bluecherry.net. This card uses a Techwell chipset, for which WDM drivers are now available in

both 32 and 64-bit variety.

Network IP Cameras

The technologies that these cameras use to transfer video over the network vary greatly from

manufacturer to manufacturer and even between their own models. Blue Iris support for

these technologies is continuously evolving (along with the cameras themselves). If you are

unable to get your camera to work with Blue Iris, please contact ken@blueirissoftware.com

request assistance.