using recorder class to create oni file from frames

[natelannan-osu]

I am an openni beginner and am coming up empty in trying to achieve my desired task. Is it possible to create an .oni file from frame image files such as .ppm or .pgm if I have access to all of the camera parameters and meta data? Specifically I am wondering if I can take the data in the Berkeley MHAD data set and convert to .oni files. From what I have read I need a VideoStream in order to use the Recorder Class but in order to set up the VideoStream I need to have a valid Device. Could I somehow use a dummy device and insert the images from MHAD into VideoFrames and somehow create a stream from them?

Thanks for any guidance.