New SDK

[niallm]

I've downloaded the new SDK 1.1.030. Recompiled my apps everything seems ok and works with the Flex 3 cameras.
There seems to be a bit of a quirk in identifying the Flex 3 cameras.
The DirectshowRecord tool will start up with no cameras plugged in. Will not recognize the cameras if plugged in while app is running. If the app is started with cameras plugged in it crashes.
Any thoughts ?

Niall

[Birch]

Niall,

This looks like an issue with the DirectShow emulation and the version of the OptiTrack SDK on the website. We will look into this.

[sharif]

Hi,
I know you are looking into this already, but thought I'd chime in with some additional details (as I'm getting the same problem as the original poster)

If I run OptiCapture.exe without the camera's USB plugged in, it starts up its window and says no camera is attached. But when I attach the camera, nothing happens - I must quit the program.
If I run OptiCapture.exe with the camera attached, it brings up the window's outline, the closes it. The camera LED digit's start a scrolling pattern, and the illuminator LEDs turn on and stay on. The a file called dv.avi appears in the OptiCapture directory, but it is unplayable.

This is the first time I've used the optitrack. Might it be possible to download an older (working) version of the Opticapture program?

Thanks,
Sharif

[Birch]

We have just posted an updated version of the DirectShow filter in the downloads section of the OptiTrack site that fixes a couple issues.

Note that the DirectShow filter is only compatible with the FLEX:C120 cameras, the older cameras do not have the built-in greyscale feature which it uses.

Also, some codecs work better than others with the app. The "Intel IYUV" codec doesn't provide great compression, but does work better than most of the others as a raw capture format.

[seanboyette]

would it possibe to get the source?

[beckdo]

Hi Sean,

I don't believe the source code will be available for the OptiTrack Recorder application or the DirectShow Capture Filter. Is there something in particular you were hoping to accomplish?

The capture filter itself is a baseline implementation of a DirectShow capture filter. It currently hooks through the OptiTrack SDK and connects to the first camera available. It won't attempt to connect to a newly connected camera once it's running.

The capture filter attempts to capture greyscale images from the C120 camera at 120FPS.