FakevideoMac

from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
from selenium.webdriver.chrome.options import Options
import time

desired_cap = {
                  'browser_version': 'latest',
                  'name': "camera_spoof",
                  'build': 'Camera Stream',
                  'os': 'OS X',
                  'os_version': 'Big Sur',
                  'browserName': 'Chrome',
                  'resolution': '1920x1080',

              # Configure ChromeOptions to pass fake media stream
              'chromeOptions': {
    'args': ["--use-fake-device-for-media-stream", "--use-fake-ui-for-media-stream",
             "--use-file-for-fake-video-capture=//Users//test1//Downloads//sample_640x360.mjpeg",
             "--allow-file-access"]
}
}


driver = webdriver.Remote(command_executor='https://<username>:<password>@hub-cloud.browserstack.com/wd/hub',
                          desired_capabilities=desired_cap)

# WebCam Test
driver.maximize_window()
driver.get("https://filesamples.com/samples/video/mjpeg/sample_640x360.mjpeg")
time.sleep(10)
driver.get("https://webcamtests.com/check")
time.sleep(15)
driver.get("https://filesamples.com/samples/video/mjpeg/sample_640x360.mjpeg")
time.sleep(15)
driver.find_element_by_id("webcam-launcher").click()
time.sleep(20)
driver.quit()