Export Maya camera to Nuke .chan file.

gistfile1.py

import maya.cmds as cmds
import math

def dump_camera_channels( cameraName, time ):
    current = time
    shapeName  = cmds.listRelatives(cameraName,shapes=True)[0]
    tx = cmds.getAttr(cameraName+".tx", t=current)
    ty = cmds.getAttr(cameraName+".ty", t=current)
    tz = cmds.getAttr(cameraName+".tz", t=current)
    rx = cmds.getAttr(cameraName+".rx", t=current)
    ry = cmds.getAttr(cameraName+".ry", t=current)
    rz = cmds.getAttr(cameraName+".rz", t=current)
    hfa	= cmds.getAttr(shapeName + '.horizontalFilmAperture',t=current)
    vfa = cmds.getAttr(shapeName + '.verticalFilmAperture',t=current)
    fl	= cmds.getAttr(shapeName + '.focalLength',t=current)
    vfov = 2 * (math.atan2(vfa/2.0*25.4,fl) * 180 / math.pi);

    return str(current) + " " + str(tx) + " " + str(ty) + " " + str(tz) + " " + str(rx) + " " + str(ry) + " " + str(rz) + " " + str(vfov)

def export_camera( filename, cameraName, **kwargs ):
    st = 1
    ed = 1
    step = 1
    if 'st' in kwargs:
        st = kwargs['st']
    if 'ed' in kwargs:
        ed = kwargs['ed']
    if 'step' in kwargs:
        step = kwargs['step']

    try:
        f = open( filename, 'w')
        for time in xrange(st, ed, step):
            l = dump_camera_channels( cameraName, time )
            f.write(l + "\n")
        f.close()
        
    except IOError:
        pass

if __name__ == '__main__':
    export_camera( "/Users/hideki/test.chan", "camera1", st = 1, ed = 30 )