Better way is Amazon Linux and
Enhanced Networking on Linux C3、C4、M4
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/sriov-networking.html
I think is better for performace.
1、
http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_NAT_Instance.html#NATSG
1.1、Create instance form ami ：ami-vpc-nat-hvm choese best new
***NAT AMI***
1.2、
Check．IPv4 forwarding is enabled and ICMP redirects are disabled in /etc/sysctl.d/10-nat-settings.conf
IPv4 forwarding =1
Run．A script located at /usr/sbin/configure-pat.sh runs at startup and configures iptables IP masquerading.
Here have problem, so must delete POSTROUTING
sudo iptables -t nat -D POSTROUTING 1
2、
https://holtstrom.com/michael/blog/post/400/Port-Forwarding-Gateway-via-iptables-on-Linux.html
eth0 10.0.0.219 52.78.165.129
eth1 10.0.1.149
web server 10.0.1.249
iptables -vxnL –line-numbers
iptables -t nat -vxnL –line-numbers
https://github.com/agsh/rtsp-ffmpeg
this is ok
https://blog.gmem.cc/research-on-html5-video-surveillance
First try this demo can play on ios
http://jsmpeg.com/
Second
https://github.com/phoboslab/jsmpeg#encoding-videoaudio-for-jsmpeg
view-stream.html (nodejs localhost:8080 maybe can see)
websocket-relay.js this is use node.js then get ws server
Import !!
ffmpeg -re -i rtmp://xxx.xxx.xxx.xxx/live/ooo -f mpegts -codec:v mpeg1video -bf 0 -codec:a mp2 -s 640x360 -r 30 -q 4 -muxdelay 0.001 http://localhost:8081/password -re 參數表示以視頻實際播放速率解碼，不加這個參數一般會導致直播速率變得飛快
-re一定要加，代表按照帧率发送，否则ffmpeg会一股脑地按最高的效率发送数据。
-muxdelay 0.001 reduce lag (maybe no use)
-q 4 Need test
You’re setting -q 1, which is the best possible quality.
