gistfile1.py

#!/usr/bin/env python
#
# Simple vid cap
#
import ecto
import ecto.opts

from ecto_opencv import highgui, calib, imgproc

def video_capture_plasm(device=0, width=640, height=480):
    video_cap = highgui.VideoCapture(video_device=device, width=width, height=height)

    fps = highgui.FPSDrawer()

    video_display = highgui.imshow('imshow',
                                   name='video_cap', waitKey=2)

    plasm = ecto.Plasm()
    plasm.connect(video_cap['image'] >> fps['image'],
                  fps['image'] >> video_display['input'],
                  )
    return plasm

plasm = video_capture_plasm()

if __name__ == '__main__':
    import argparse
    parser = argparse.ArgumentParser(description='Capture a video from the device and display it.')
    parser.add_argument('-d,--device', metavar='DEVICE_ID', dest='device', type=int, default=0, help='The device ID of a video camera. Take the number off of\n\t% ls /dev/video*')
    parser.add_argument('--width', metavar='WIDTH', dest='width', type=int, default=640, help='Desired image width.')
    parser.add_argument('--height', metavar='HEIGHT', dest='height', type=int, default=480, help='Desired image height.')
    group = parser.add_argument_group('ecto scheduler options')
    ecto.opts.scheduler_options(group)
    options = parser.parse_args()
    plasm = video_capture_plasm(device=options.device, height=options.height, width=options.width)
    ecto.opts.run_plasm(options, plasm)