django+mongo实现视频流媒体播放
django+mongoengine实现流媒体播放
先是代码下载
django代码
提取码：eytp
1、新建数据库
（没有navicat用命令行建数据库也行）
2、新建保存视频文件代码：mongo_save.py
import mongoengine
import os
import glob
class video(mongoengine.Document):
name = mongoengine.StringField()
type = mongoengine.StringField()
filedata = mongoengine.FileField()
def save(path):
for mp4 in glob.glob(path + '/*/*.mp4'):
size = os.path.getsize(mp4) #这个很重要，必须保存视频的大小
with open(mp4, 'rb') as f:
v = video(name=mp4.split('\\')[-1], type='视频')
v.filedata.put(f.read(),content_type='video/mp4',size=size)
v.save()
f.close()
def start_save():
mongoengine.connect('test') #链接test数据库
path = 'save_mp4' #视频文件路径
if os.path.exists(path):
save(path)
if __name__ == '__main__':
start_save()
视频文件目录结构如下图：
运行python mongo_save.py，可看到视频已保存到数据库
3、django urls.py代码
from django.urls import path
from . import views
urlpatterns = [
path('',views.show_video,name='video'),
path('get_video/' , views.get_video, name='get_video'),
]
4、django views.py代码
from django.shortcuts import render,HttpResponse
from defectshow.models import *
from django.http import StreamingHttpResponse
import re
def file_iterator(data,loc,length=None,chunk_size=8192):
data.filedata.seek(loc)
remaining = length
while True:
bytes_length = chunk_size if remaining is None else min(remaining, chunk_size)
chunk_data = data.filedata.read(bytes_length)
if not chunk_data:
break
if remaining:
remaining -= len(chunk_data)
yield chunk_data
def get_video(request, pk):
range_header = request.META.get('HTTP_RANGE', '').strip()
range_re = re.compile(r'bytes\s*=\s*(\d+)\s*-\s*(\d*)', re.I)
range_match = range_re.match(range_header)
v = video.objects.get(pk=pk)
size = v.filedata.size
content_type, encoding = ('video/mp4',None)
if range_match:
first_byte, last_byte = range_match.groups()
if first_byte:
first_byte = int(first_byte)
else:
first_byte = 0
last_byte = first_byte + 1024 * 1024 * 8
if last_byte > size:
last_byte = size - 1
length = last_byte - first_byte + 1
resp = StreamingHttpResponse(file_iterator(v,first_byte, length), status=206, content_type=content_type)
resp['Content-Range'] = 'bytes %s-%s/%s' % (first_byte, last_byte, size)
else:
resp = HttpResponse(mon.filedata.read(),content_type="video/mp4")
return resp
def show_video(request):
v = video.objects.filter(type='视频').only('pk','name')[:2]
return render(request,'1.html',{'videos': v})
5、HTML
DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>流式播放title>
head>
<body>
{% for video in videos %}
<video title="{{ video.name }}" width="550" height="400" controls="controls">
<source src="{% url 'get_video' video.pk %}" type="video/mp4" />
video>
{%endfor%}
body>
html>
6、实现流式播放
这视频啪地一下，很快啊，不讲武德
