recorder.py 文件源码

def video (seconds, frameRate):
    cap = cv2.VideoCapture(0)
    if(not cap.isOpened()):
        return "error"

    # Define the codec and create VideoWriter object
    fourcc = cv2.cv.CV_FOURCC(*'XVID')
    name = "media/video/" + time.strftime("%d-%m-%Y_%X")+".avi"
    out = cv2.VideoWriter(name, fourcc, frameRate, (640,480))
    program_starts = time.time()
    result = subprocess.Popen(["ffprobe", name], stdout = subprocess.PIPE, stderr = subprocess.STDOUT, shell=True)
    nFrames=0
    while(nFrames<seconds*frameRate):
        ret, frame = cap.read()
        if ret==True:
            out.write(frame)
            nFrames += 1
        else:
            break
    cap.release()
    return name