The options in REST interfaces are passed in like:
http://services.nirvanix.com/ws/video/PresetTranscode.ashx?sessionToken=XZY&srcFilePath=/src/file.avi&destFilePath=/dest/file.flv&preset=H263%20FLV%20High&scalewidth=100&scaleheight=100
So in the SDK this would translate to an associative array that looks like:
session = Session(appkey, username, password)
video = Nirvanix('Video', session);
options = {'srcFilePath': '/src/file.avi','destFilePath':'/dest/file.flv','preset': 'H263 FLV High','scalewidth': '100','scaleheight': '100'}
doc = video.PresetTranscode(options,False)
Let me know if you need help with any others.
Regards,
Barry R.