Video recording with webcam

Coding
1

Hello Everyone,
I am using this code to active webcam. I am able to open the webcam, but I am not able to save the video. how can I save the video?
Thanks,
Ravi

from __future__ import print_function

from psychopy import visual, event, core
import Image, time, pylab, cv, numpy

mywin = visual.Window(allowGUI=False, monitor='testMonitor', units='norm',colorSpace='rgb',color=[-1,-1,-1], fullscr=True)
mywin.setMouseVisible(False)

capture = cv.CaptureFromCAM(0)
img = cv.QueryFrame(capture)
pi = Image.fromstring("RGB", cv.GetSize(img), img.tostring(), "raw", "BGR", 0, 1)
print(pi.size)
myStim = visual.GratingStim(win=mywin, tex=pi, pos=[0,0.5], size = [0.6,0.6], opacity = 1.0, units = 'norm')
myStim.setAutoDraw(True)

while True:
    img = cv.QueryFrame(capture)
    pi = Image.fromstring("RGB", cv.GetSize(img), img.tostring(), "raw", "BGR", 0, 1)
    myStim.setTex(pi)
    mywin.flip()
    theKey = event.getKeys()
    if len(theKey) != 0:
        break
2

That isn’t something the PsychoPy provides. The cv library (which you’re using to capture the frames) should be able to handle it so I would look at their documentation.

3

Hi Ravi,

Did you ever get this working? I’d like to do something similar. Could you share any code on Gitlab/github ?

Many thanks,
John