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這篇文章主要介紹了python實(shí)現(xiàn)實(shí)時(shí)視頻流播放代碼實(shí)例,文中通過示例代碼介紹的非常詳細(xì),對(duì)大家的學(xué)習(xí)或者工作具有一定的參考學(xué)習(xí)價(jià)值,需要的朋友可以參考下
@action(methods=['GET'], detail=True) def video(self, request, pk=None): """ 獲取設(shè)備實(shí)時(shí)視頻流 :param request: :param pk: :return: """ device_obj = self.get_object() # if device_obj.status == 0: # return Response({'error': '設(shè)備離線'}) 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: # 任務(wù)初始化,設(shè)置初始時(shí)間 cache.set(cache_id, time.time(), timeout=60) elif isinstance(cache_status, float) and time.time() - cache_status > 30: # 任務(wù)已超時(shí), 返回錯(cuò)誤信息, 一段時(shí)間內(nèi)不再入隊(duì) return Response({'error': '連接數(shù)目超過限制, 請(qǐng)稍后再試'}) 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': # 視頻流正常推送中, 刷新播放時(shí)間, 返回視頻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': # 視頻任務(wù)等待中 return Response({'status': '等待建立視頻連接'}) else: # 建立視頻任務(wù)失敗 return Response({'error': '打開視頻失敗'})
class JobQueue: """實(shí)時(shí)視頻播放""" def __init__(self): self.video_queue = django_rq.get_queue('video') # 視頻推流消息隊(duì)列 def enqueue_video(self, rtsp_address, device_hash): """視頻流隊(duì)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
# -*- coding: utf-8 -*- import subprocess import threading import time import logging from django.core.cache import cache logger = 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 h364 -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))
# 實(shí)時(shí)視頻流播放 RQ_QUEUES = { 'video': { 'USE_REDIS_CACHE': 'video', } }
以上就是本文的全部?jī)?nèi)容,希望對(duì)大家的學(xué)習(xí)有所幫助,也希望大家多多支持億速云。
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