大疆无人机rtmp推流直播到电脑（Windows版本已成功）

一、所需资源二、安装三、ffmpeg推流四、无人机rtmp推流五、Python获取无人机实时视频

一、所需资源

1、nginx的Gryphon版本，它内部已经集成了rtmp的推流编译(nginx-Gryphon) 2、服务器状态检查程序stat.xsl（nginx-rtmp-module） 3、ffmpeg（ffmpeg） 4、VLC（VLC）

二、安装

1、将下载好的nginx 1.7.11.3 Gryphon解压修改文件名为nginx-1.7.11.3-Gryphon，绝对路径中不能有中文，必须全为英文！ 2、在根目录中的conf文件夹中，若有nginx.conf文件，直接进入修改；若无，则创建一个。 3、在nginx文件中，将以下内容粘贴。

#user nobody;

# multiple workers works !

worker_processes 2;

#error_log logs/error.log;

#error_log logs/error.log notice;

#error_log logs/error.log info;

#pid logs/nginx.pid;

events {

worker_connections 8192;

# max value 32768, nginx recycling connections+registry optimization =

# this.value * 20 = max concurrent connections currently tested with one worker

# C1000K should be possible depending there is enough ram/cpu power

# multi_accept on;

}

rtmp {

server {

listen 1935;

chunk_size 4000;

application live {

live on;

}

}

}

http {

#include /nginx/conf/naxsi_core.rules;

include mime.types;

default_type application/octet-stream;

#log_format main '$remote_addr:$remote_port - $remote_user [$time_local] "$request" '

# '$status $body_bytes_sent "$http_referer" '

# '"$http_user_agent" "$http_x_forwarded_for"';

#access_log logs/access.log main;

# # loadbalancing PHP

# upstream myLoadBalancer {

# server 127.0.0.1:9001 weight=1 fail_timeout=5;

# server 127.0.0.1:9002 weight=1 fail_timeout=5;

# server 127.0.0.1:9003 weight=1 fail_timeout=5;

# server 127.0.0.1:9004 weight=1 fail_timeout=5;

# server 127.0.0.1:9005 weight=1 fail_timeout=5;

# server 127.0.0.1:9006 weight=1 fail_timeout=5;

# server 127.0.0.1:9007 weight=1 fail_timeout=5;

# server 127.0.0.1:9008 weight=1 fail_timeout=5;

# server 127.0.0.1:9009 weight=1 fail_timeout=5;

# server 127.0.0.1:9010 weight=1 fail_timeout=5;

# least_conn;

# }

sendfile off;

#tcp_nopush on;

server_names_hash_bucket_size 128;

## Start: Timeouts ##

client_body_timeout 10;

client_header_timeout 10;

keepalive_timeout 30;

send_timeout 10;

keepalive_requests 10;

## End: Timeouts ##

#gzip on;

server {

listen 80;

server_name localhost;

#charset koi8-r;

#access_log logs/host.access.log main;

## Caching Static Files, put before first location

#location ~* \.(jpg|jpeg|png|gif|ico|css|js)$ {

# expires 14d;

# add_header Vary Accept-Encoding;

#}

# For Naxsi remove the single # line for learn mode, or the ## lines for full WAF mode

location / {

#include /nginx/conf/mysite.rules; # see also http block naxsi include line

##SecRulesEnabled;

##DeniedUrl "/RequestDenied";

##CheckRule "$SQL >= 8" BLOCK;

##CheckRule "$RFI >= 8" BLOCK;

##CheckRule "$TRAVERSAL >= 4" BLOCK;

##CheckRule "$XSS >= 8" BLOCK;

root html;

index index.html index.htm;

}

# For Naxsi remove the ## lines for full WAF mode, redirect location block used by naxsi

##location /RequestDenied {

## return 412;

##}

## Lua examples !

# location /robots.txt {

# rewrite_by_lua '

# if ngx.var.http_host ~= "localhost" then

# return ngx.exec("/robots_disallow.txt");

# end

# ';

# }

#error_page 404 /404.html;

# redirect server error pages to the static page /50x.html

#

error_page 500 502 503 504 /50x.html;

location = /50x.html {

root html;

}

# proxy the PHP scripts to Apache listening on 127.0.0.1:80

#

#location ~ \.php$ {

# proxy_pass http://127.0.0.1;

#}

# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000

#

#location ~ \.php$ {

# root html;

# fastcgi_pass 127.0.0.1:9000; # single backend process

# fastcgi_pass myLoadBalancer; # or multiple, see example above

# fastcgi_index index.php;

# fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;

# include fastcgi_params;

#}

# deny access to .htaccess files, if Apache's document root

# concurs with nginx's one

#

#location ~ /\.ht {

# deny all;

#}

}

# another virtual host using mix of IP-, name-, and port-based configuration

#

#server {

# listen 8000;

# listen somename:8080;

# server_name somename alias another.alias;

# location / {

# root html;

# index index.html index.htm;

# }

#}

# HTTPS server

#

#server {

# listen 443 ssl spdy;

# server_name localhost;

# ssl on;

# ssl_certificate cert.pem;

# ssl_certificate_key cert.key;

# ssl_session_timeout 5m;

# ssl_prefer_server_ciphers On;

# ssl_protocols TLSv1 TLSv1.1 TLSv1.2;

# ssl_ciphers ECDH+AESGCM:ECDH+AES256:ECDH+AES128:ECDH+3DES:RSA+AESGCM:RSA+AES:RSA+3DES:!aNULL:!eNULL:!MD5:!DSS:!EXP:!ADH:!LOW:!MEDIUM;

# location / {

# root html;

# index index.html index.htm;

# }

#}

}

注：rtmp中的“application live” ,application+空格+live，live即使访问路径，如localhost:1935/live。 4、在nginx.exe所在的目录，即根目录下，进入cmd窗口，输入nginx.exe或.\nginx.exe，启动nginx。 5、可以直接浏览器输入localhost验证是否启动nginx，若出现nginx的主页面，则成功。 6、将服务器状态检查程序解压，放到nginx根目录下。 7、将ffmpeg解压后，将其bin目录添加环境变量。 8、安装VLC

三、ffmpeg推流

ffmpeg推流是为了确定nginx的1935端口已打开并运行rtmp推流功能，以排除故障等问题。 1、在测试视频所在文件夹打开cmd窗口，输入指令 ffmpeg.exe -re -i .\视频名.mp4 -vcodec libx264 -acodec aac -f flv rtmp://127.0.0.1:1935/live 2、若出现以下画面则推流失败，是因为nginx的1935端口未开启，或是rtmp未推流。

3、若出现以下画面，则成功，frame, fps等信息会不断地变化。

4、打开VLC，在左上角媒体中选择 打开网络串流 ，在网络URL中输入rtmp://127.0.0.1:1935/live，点击播放。 5、若是显示出视频，则成功。

四、无人机rtmp推流

1、保证电脑和无人机遥控器（或遥控器连接的手机）在同一局域网中（即同一路由器或热点）。 2、电脑确认ip地址，打开cmd窗口输入命令ipconfig，确定电脑ip地址。 3、无人机进入自定义直播功能中，输入地址，一般为 rtmp://192.168.x.x:1935/live 或 rtmp://10.0.x.x:1935/live。 4、打开VLC，在左上角媒体中选择 打开网络串流 ，在网络URL中输入与 3 中同样的ip地址，点击播放。 5、若显示出无人机画面，则成功，一般延迟在 3~10s 内。（我是成功了，哈哈哈哈哈！） 注：若无人机无法传输视频，那么把Windows系统的防火墙关闭再试一试。

五、Python获取无人机实时视频

import cv2

import time

if __name__ == '__main__':

# 无人机rtmp视频流url

video_path = "rtmp://192.168.x.x:1935/live"

# opencv获取视频流

capture = cv2.VideoCapture(video_path)

while True:

fps = 0.0

t1 = time.time()

# 读取某一帧

ref, frame = capture.read()

fps = (fps + (1. / (time.time() - t1))) / 2

print("fps= %.2f" % (fps))

frame = cv2.putText(frame, "fps= %.2f" % (fps), (0, 40), cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 255, 0), 2)

cv2.imshow("video", frame)

c = cv2.waitKey(1) & 0xff

if c == 27:

capture.release()

break

print("Video Detection Done!")

capture.release()

cv2.destroyAllWindows()

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