最近有位前輩詢問左羊能否不借助Java程序直接將多個rtsp協(xié)議網(wǎng)絡(luò)攝像頭的視頻流推送阿里云的直播域名上面去，有左羊當(dāng)時瑣事較多吧吁伺！沒有時間去想饮睬，今天小羊閑下來了租谈，細(xì)細(xì)思索下還是直接使用shell編寫腳本最為便捷了
環(huán)境：linux篮奄，ffmpeg，阿里云直播域名
阿里云的推流域名是有安全認(rèn)證的割去，所我們在處理推流地址時需要獲取時間戳并且計算過期時間再進行MD5加密窟却，這么做主要是為了防止所有人都可向你的服務(wù)器推流造成流量經(jīng)濟損失！
首先左羊先大家從ffmepg命令逐級講解
ffmpeg -re -rtsp_transport tcp -i $rtspUrl -c:a copy -c:v libx264 -preset:v fast -tune:v zerolatency -max_delay 100 -f flv -g 5 -b 1024k $rtmpUrl
$rtspUrl：rtsp抓流地址
$rtmpUrl：rtmp推流地址
我在這里主要說下rtmp推流地址的組成方式
$rtmp2'?auth_key='$timestamp'-0-0-'$md5Str2
$rtmp2：rtmp推流域名
$timestamp:過期時間戳
$md5Str2：MD5加密串
過期時間戳
#獲取當(dāng)前時間戳
current=`date "+%Y-%m-%d %H:%M:%S"`
timeStampStr=`date -d "$current" +%s`
timestamp=$((timeStampStr*1000+`date "+%N"`/1000000/1000+1800))
#將timeStampStr轉(zhuǎn)換為過期時間戳呻逆，精確到毫秒
MD5加密串
md5Url2='/'$appName'/202-'$timestamp'-0-0-'$pushIdentKey
md5Str2=$(echo -n $md5Url2 | md5sum | awk '{print $1}')
最后附上完整腳本
#!/bin/sh
#備注:強烈杜絕中文標(biāo)點符號
#攝像頭數(shù)量
cameNum=6
#攝像頭推流
came1='rtsp://網(wǎng)絡(luò)攝像頭地址1'
came2='rtsp://網(wǎng)絡(luò)攝像頭地址2'
came3='rtsp://網(wǎng)絡(luò)攝像頭地址3'
came4='rtsp://網(wǎng)絡(luò)攝像頭地址4'
came5='rtsp://網(wǎng)絡(luò)攝像頭地址5'
came6='rtsp://網(wǎng)絡(luò)攝像頭地址6'
#獲取當(dāng)前時間戳
current=`date "+%Y-%m-%d %H:%M:%S"`
timeStampStr=`date -d "$current" +%s`
timestamp=$((timeStampStr*1000+`date "+%N"`/1000000/1000+1800))
#將timeStampStr轉(zhuǎn)換為過期時間戳夸赫，精確到毫秒
#阿里云推流地址
Url='阿里云推流地址'
#拉流名稱
appName='live'
#阿里云推流Key
pushIdentKey='阿里云推流Key'
#推流地址
rtmp1='rtmp://'$Url'/'$appName'/102'
rtmp2='rtmp://'$Url'/'$appName'/202'
rtmp3='rtmp://'$Url'/'$appName'/302'
rtmp4='rtmp://'$Url'/'$appName'/402'
rtmp5='rtmp://'$Url'/'$appName'/502'
rtmp6='rtmp://'$Url'/'$appName'/602'
#MD5 加密串
md5Url1='/'$appName'/102-'$timestamp'-0-0-'$pushIdentKey
#MD5 加密
md5Str1=$(echo -n $md5Url1 | md5sum | awk '{print $1}')
#完整推流地址
finallyPushUrl1=$rtmp1'?auth_key='$timestamp'-0-0-'$md5Str1
md5Url2='/'$appName'/202-'$timestamp'-0-0-'$pushIdentKey
md5Str2=$(echo -n $md5Url2 | md5sum | awk '{print $1}')
finallyPushUrl2=$rtmp2'?auth_key='$timestamp'-0-0-'$md5Str2
md5Url3='/'$appName'/302-'$timestamp'-0-0-'$pushIdentKey
md5Str3=$(echo -n $md5Url3 | md5sum | awk '{print $1}')
finallyPushUrl3=$rtmp3'?auth_key='$timestamp'-0-0-'$md5Str3
md5Url4='/'$appName'/402-'$timestamp'-0-0-'$pushIdentKey
md5Str4=$(echo -n $md5Url4 | md5sum | awk '{print $1}')
finallyPushUrl4=$rtmp4'?auth_key='$timestamp'-0-0-'$md5Str4
md5Url5='/'$appName'/502-'$timestamp'-0-0-'$pushIdentKey
md5Str5=$(echo -n $md5Url5 | md5sum | awk '{print $1}')
finallyPushUrl5=$rtmp5'?auth_key='$timestamp'-0-0-'$md5Str5
md5Url6='/'$appName'/602-'$timestamp'-0-0-'$pushIdentKey
md5Str6=$(echo -n $md5Url6 | md5sum | awk '{print $1}')
finallyPushUrl6=$rtmp6'?auth_key='$timestamp'-0-0-'$md5Str6
start(){
echo "開始推流 ............... "
for i in $(seq 1 $cameNum)
do
rtspUrl=`eval echo '$'"came$i"`
rtmpUrl=`eval echo '$'"finallyPushUrl$i"`
if [ -n "$rtspUrl" ]; then
nohup ffmpeg -re -rtsp_transport tcp -i $rtspUrl -c:a copy -c:v libx264 -preset:v fast -tune:v zerolatency -max_delay 100 -f flv -g 5 -b 1024k $rtmpUrl 2> /dev/null &
fi
done
}
stop(){
ps -e|grep ffmpeg|awk '{print $1}'|xargs kill -9
}
case $1 in
start)
start
;;
stop)
stop
;;
restart)
stop
sleep 2
start
;;
*)
echo $"Usage: $0 {start|stop|restart}"
轉(zhuǎn)載自微信公眾號《左羊公社》：
ffmpeg推送阿里云流媒體服務(wù)器腳本
