如何设置计时器以停止通过Raspberry Pi上的SocketServer进行流式传输的相机？

如何解决如何设置计时器以停止通过Raspberry Pi上的SocketServer进行流式传输的相机？

我正在尝试在RaspBerry Pi上流式传输网络摄像头。我在picamera官方文档中找到了此code。该脚本使用Python的内置http.server模块制作了一个简单的视频流服务器，对我来说效果很好：

import io
import picamera
import logging
import socketserver
from threading import Condition
from http import server

PAGE="""\
<html>
<head>
<title>picamera MJPEG streaming demo</title>
</head>
<body>
<h1>PiCamera MJPEG Streaming Demo</h1>
<img src="stream.mjpg" width="640" height="480" />
</body>
</html>
"""

class StreamingOutput(object):
    def __init__(self):
        self.frame = None
        self.buffer = io.BytesIO()
        self.condition = Condition()

    def write(self,buf):
        if buf.startswith(b'\xff\xd8'):
            # New frame,copy the existing buffer's content and notify all
            # clients it's available
            self.buffer.truncate()
            with self.condition:
                self.frame = self.buffer.getvalue()
                self.condition.notify_all()
            self.buffer.seek(0)
        return self.buffer.write(buf)

class StreamingHandler(server.BaseHTTPRequestHandler):
    def do_GET(self):
        if self.path == '/':
            self.send_response(301)
            self.send_header('Location','/index.html')
            self.end_headers()
        elif self.path == '/index.html':
            content = PAGE.encode('utf-8')
            self.send_response(200)
            self.send_header('Content-Type','text/html')
            self.send_header('Content-Length',len(content))
            self.end_headers()
            self.wfile.write(content)
        elif self.path == '/stream.mjpg':
            self.send_response(200)
            self.send_header('Age',0)
            self.send_header('Cache-Control','no-cache,private')
            self.send_header('Pragma','no-cache')
            self.send_header('Content-Type','multipart/x-mixed-replace; boundary=FRAME')
            self.end_headers()
            try:
                while True:
                    with output.condition:
                        output.condition.wait()
                        frame = output.frame
                    self.wfile.write(b'--FRAME\r\n')
                    self.send_header('Content-Type','image/jpeg')
                    self.send_header('Content-Length',len(frame))
                    self.end_headers()
                    self.wfile.write(frame)
                    self.wfile.write(b'\r\n')
            except Exception as e:
                logging.warning(
                    'Removed streaming client %s: %s',self.client_address,str(e))
        else:
            self.send_error(404)
            self.end_headers()

class StreamingServer(socketserver.ThreadingMixIn,server.HTTPServer):
    allow_reuse_address = True
    daemon_threads = True

with picamera.PiCamera(resolution='640x480',framerate=24) as camera:
    output = StreamingOutput()
    camera.start_recording(output,format='mjpeg')
    try:
        address = ('',8000)
        server = StreamingServer(address,StreamingHandler)
        server.serve_forever()
    finally:
        camera.stop_recording()

当您按 Ctrl + C 时，此代码停止。

我正在寻找一种解决方案，以在一段时间后自动停止此代码

如何设置计时器以停止通过Raspberry Pi上的SocketServer进行流式传输的相机？

如何解决如何设置计时器以停止通过Raspberry Pi上的SocketServer进行流式传输的相机？

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