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 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 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',
}
}
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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