这篇文章主要介绍了python实现实时视频流播放代码实例,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下
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@action(methods=['GET'], detail=True) def video(self, request, pk=None): """ 获取设备实时视频流 :param request: :param pk: :return: """ device_obj = self.get_object() # if device_obj.status == 0: # return Response({'error': '设备离线'}) if not device_obj.rtsp_address: return Response({'error': '缺少rtsp地址'}) cache_id = '_video_stream_{}'.format(device_obj.hash) cache_status = cache.get(cache_id, None) if cache_status is None: # 任务初始化,设置初始时间 cache.set(cache_id, time.time(), timeout=60) elif isinstance(cache_status, float) and time.time() - cache_status > 30: # 任务已超时, 返回错误信息, 一段时间内不再入队 return Response({'error': '连接数目超过限制, 请稍后再试'}) ret = job_queue.enqueue_video(rtsp_address=device_obj.rtsp_address, device_hash=device_obj.hash) logger.info('fetch device %s video job status: %s', pk, ret._status) if ret._status == b'started' or 'started': # 视频流正常推送中, 刷新播放时间, 返回视频ID cache.set(cache_id, 'continue', timeout=30) return Response({'video': ''.join([settings.FFMPEG_VIDEO, device_obj.hash])}) elif ret._status == b'queued' or 'queued': # 视频任务等待中 return Response({'status': '等待建立视频连接'}) else: # 建立视频任务失败 return Response({'error': '打开视频失败'}) |
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class JobQueue: """实时视频播放""" def __init__(self): self.video_queue = django_rq.get_queue('video') # 视频推流消息队列 def enqueue_video(self, rtsp_address, device_hash): """视频流队列""" job_id = 'video_{}'.format(device_hash) job = self.video_queue.fetch_job(job_id) if not job: job = self.video_queue.enqueue_call( func='utils.ffmpeg.ffmpeg_play', args=(rtsp_address, device_hash), timeout=-1, ttl=30, # 最多等待30秒 result_ttl=0, job_id=job_id ) return job |
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# -*- coding: utf-8 -*-import subprocessimport threadingimport timeimport loggingfrom django.core.cache import cachelogger = logging.getLogger('server.default')def ffmpeg_play(stream, name): play = True cache_id = '_video_stream_{}'.format(name) cache.set(cache_id, 'continue', timeout=30) process = None def upstream(): cmd = "ffmpeg -i '{}' -c:v h264 -f flv -r 25 -an 'rtmp://127.0.0.1:1935/live/{}'".format(stream, name) process = subprocess.Popen(cmd, shell=True, stdin=subprocess.PIPE, stderr=subprocess.DEVNULL) try: logger.info('device: {} stream thread start: {}'.format(name, stream)) while play: time.sleep(1) except Exception as e: logger.info('device: {} stream thread error {}'.format(name, e)) finally: logger.info('device: {} stream thread stop'.format(name)) process.communicate(b'q') thr = threading.Thread(target=upstream) thr.start() try: while True: play = cache.get(cache_id, '') if play != 'continue': logger.info('stop device {} video stream'.format(name)) play = False break time.sleep(1) except Exception as e: logger.info('device: {} play stream error {}'.format(name, e)) process.communicate(b'q') logger.info('wait device {} video thread stop'.format(name)) thr.join() logger.info('device {} video job stop'.format(name)) |
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# 实时视频流播放RQ_QUEUES = { 'video': { 'USE_REDIS_CACHE': 'video', }} |
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://www.cnblogs.com/52-qq/p/11812430.html
