picamera-live-change.py

import picamera
import subprocess
from time import sleep

proc = subprocess.Popen([
     '/usr/bin/gst-launch-1.0',
     'fdsrc', '!',
     'h264parse', '!',
     'rtph264pay', 'config-interval=1', 'pt=96', '!',
     'udpsink', 'host=192.168.40.14', 'port=5600'
    ], stdin=subprocess.PIPE)

# initialize the camera
camera = picamera.PiCamera(resolution=(1280, 720), framerate=30)

# start recording to ffmpeg's stdin
camera.start_recording(proc.stdin, format='h264', bitrate=2000000)


current_brightness = 40
while True:
    if current_brightness == 40:
        current_brightness = 50
    else:
        current_brightness = 40
    camera.brightness = current_brightness
    sleep(1)