Nginx-rtmp实现直播媒体实时流效果

 1. 客户端A无法进行P2P穿透，请求业务服务器要进行转发。 2. 业务服务器根据客户端A，请求类型，返回对应的转发服务器地址和对应的房间号RoomID/Token等信息 3. 上述请求类型，可以是请求自建RTMP流媒体服务，购买于云厂商RTMP流媒体服务或者自定义协议媒体转发服务 4. 客户端A得到业务服务器返回的媒体服务器地址和RoomID/Token 5. 通过信令服务器或者MQTT服务器，把对应的媒体服务器地址和RoomID/Token告诉另一端客户端B 6. 客户端A和客户端B同时进入相同房间Room，客户端A进行推流，客户端B进行拉流 7. 其他媒体信息，如编解码格式，清晰度，播放，暂停，拍照等命令，通过上述信令或MQTT服务器进行命令控制

--prefix=/opt/nginx --with-stream --with-http_ssl_module --with-stream_ssl_module --with-debug --add-module=../nginx-rtmp-module

rtmp{  server{    listen 8081;    access_log logs/rtmp_access.log;    on_connect http://127.0.0.1:8080/v1/rtmp/on_connect;    application rtmp {      live on;      notify_method get;      on_play http://127.0.0.1:8080/v1/rtmp/on_play;      on_publish http://127.0.0.1:8080/v1/rtmp/on_publish;      on_done http://127.0.0.1:8080/v1/rtmp/on_done;      on_play_done http://127.0.0.1:8080/v1/rtmp/on_play_done;      on_publish_done http://127.0.0.1:8080/v1/rtmp/on_publish_done;      on_record_done http://127.0.0.1:8080/v1/rtmp/on_record_done;      on_update http://127.0.0.1:8080/v1/rtmp/on_update;      notify_update_timeout 10s;    }    application vod {      play /opt/openresty/video;    }  }}

 package com.wunaozai.rtmp.notify.controller;import javax.servlet.http.HttpServletRequest;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;@RestController@RequestMapping(value="/v1/rtmp/")public class RTMPNotifyController {  @GetMapping(value="/on_connect")  public String onConnect(HttpServletRequest request){    debug(request, "on_connect");    return "on_connect";  }  @GetMapping(value="/on_play")  public String onPlay(HttpServletRequest request){    debug(request, "on_play");    return "on_play";  }  @GetMapping(value="/on_publish")  public String onPublish(HttpServletRequest request){    debug(request, "on_publish");    return "on_publish";  }  @GetMapping(value="/on_done")  public String onDone(HttpServletRequest request){    debug(request, "on_done");    return "on_done";  }  @GetMapping(value="/on_play_done")  public String onPlayDone(HttpServletRequest request){    debug(request, "on_play_done");    return "on_play_done";  }  @GetMapping(value="/on_publish_done")  public String onPublishDone(HttpServletRequest request){    debug(request, "on_publish_done");    return "on_publish_done";  }  @GetMapping(value="/on_record_done")  public String onRecordDone(HttpServletRequest request){    debug(request, "on_record_done");    return "on_record_done";  }  @GetMapping(value="/on_update")  public String onUpdate(HttpServletRequest request){    debug(request, "on_update");    return "on_update";  }  private String debug(HttpServletRequest request, String action){    String str = action + ": " + request.getRequestURI() + " " + request.getQueryString();    System.out.println(str);    return str;  }}

on_connect: /v1/rtmp/on_connect app=rtmp&flashver=FMLE/3.0%20(compatible%3B%20FMSc/1.0)&swfurl=&tcurl=rtmp://120.24.210.62:8081/rtmp&pageurl=&addr=113.74.127.195&epoch=178269841&call=connecton_publish: /v1/rtmp/on_publish app=rtmp&flashver=FMLE/3.0%20(compatible%3B%20FMSc/1.0)&swfurl=&tcurl=rtmp://120.24.210.62:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=541&call=publish&name=room&type=liveon_update: /v1/rtmp/on_update app=rtmp&flashver=FMLE/3.0%20(compatible%3B%20FMSc/1.0)&swfurl=&tcurl=rtmp://120.24.210.62:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=541&call=update_publish&time=10×tamp=3999&name=roomon_done: /v1/rtmp/on_done app=rtmp&flashver=FMLE/3.0%20(compatible%3B%20FMSc/1.0)&swfurl=&tcurl=rtmp://120.24.210.62:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=541&call=done&name=roomon_publish_done: /v1/rtmp/on_publish_done app=rtmp&flashver=FMLE/3.0%20(compatible%3B%20FMSc/1.0)&swfurl=&tcurl=rtmp://120.24.210.62:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=541&call=publish_done&name=roomon_connect: /v1/rtmp/on_connect app=rtmp&flashver=FMLE/3.0%20(compatible%3B%20FMSc/1.0)&swfurl=&tcurl=rtmp://120.24.210.62:8081/rtmp&pageurl=&addr=113.74.127.195&epoch=178305623&call=connecton_publish: /v1/rtmp/on_publish app=rtmp&flashver=FMLE/3.0%20(compatible%3B%20FMSc/1.0)&swfurl=&tcurl=rtmp://120.24.210.62:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=547&call=publish&name=room&type=liveon_update: /v1/rtmp/on_update app=rtmp&flashver=FMLE/3.0%20(compatible%3B%20FMSc/1.0)&swfurl=&tcurl=rtmp://120.24.210.62:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=547&call=update_publish&time=10×tamp=7296&name=roomon_update: /v1/rtmp/on_update app=rtmp&flashver=FMLE/3.0%20(compatible%3B%20FMSc/1.0)&swfurl=&tcurl=rtmp://120.24.210.62:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=547&call=update_publish&time=20×tamp=17248&name=roomon_update: /v1/rtmp/on_update app=rtmp&flashver=FMLE/3.0%20(compatible%3B%20FMSc/1.0)&swfurl=&tcurl=rtmp://120.24.210.62:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=547&call=update_publish&time=30×tamp=27328&name=roomon_update: /v1/rtmp/on_update app=rtmp&flashver=FMLE/3.0%20(compatible%3B%20FMSc/1.0)&swfurl=&tcurl=rtmp://120.24.210.62:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=547&call=update_publish&time=40×tamp=37280&name=roomon_update: /v1/rtmp/on_update app=rtmp&flashver=FMLE/3.0%20(compatible%3B%20FMSc/1.0)&swfurl=&tcurl=rtmp://120.24.210.62:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=547&call=update_publish&time=50×tamp=47296&name=roomon_update: /v1/rtmp/on_update app=rtmp&flashver=FMLE/3.0%20(compatible%3B%20FMSc/1.0)&swfurl=&tcurl=rtmp://120.24.210.62:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=547&call=update_publish&time=60×tamp=57312&name=roomon_update: /v1/rtmp/on_update app=rtmp&flashver=FMLE/3.0%20(compatible%3B%20FMSc/1.0)&swfurl=&tcurl=rtmp://120.24.210.62:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=547&call=update_publish&time=70×tamp=67264&name=roomon_connect: /v1/rtmp/on_connect app=rtmp&flashver=&swfurl=&tcurl=rtmp://rtmp.wunaozai.com:8081/rtmp&pageurl=&addr=113.74.127.195&epoch=178380351&call=connecton_play: /v1/rtmp/on_play app=rtmp&flashver=&swfurl=&tcurl=rtmp://rtmp.wunaozai.com:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=557&call=play&name=room&start=4294966296&duration=0&reset=0&pass=12345on_play_done: /v1/rtmp/on_play_done app=rtmp&flashver=&swfurl=&tcurl=rtmp://rtmp.wunaozai.com:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=557&call=play_done&name=room&pass=12345on_done: /v1/rtmp/on_done app=rtmp&flashver=&swfurl=&tcurl=rtmp://rtmp.wunaozai.com:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=557&call=done&name=room&pass=12345on_update: /v1/rtmp/on_update app=rtmp&flashver=FMLE/3.0%20(compatible%3B%20FMSc/1.0)&swfurl=&tcurl=rtmp://120.24.210.62:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=547&call=update_publish&time=80×tamp=77344&name=roomon_connect: /v1/rtmp/on_connect app=rtmp&flashver=&swfurl=&tcurl=rtmp://rtmp.wunaozai.com:8081/rtmp&pageurl=&addr=113.74.127.195&epoch=178388202&call=connecton_play: /v1/rtmp/on_play app=rtmp&flashver=&swfurl=&tcurl=rtmp://rtmp.wunaozai.com:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=563&call=play&name=room&start=4294966296&duration=0&reset=0&pass=12345on_done: /v1/rtmp/on_done app=rtmp&flashver=&swfurl=&tcurl=rtmp://rtmp.wunaozai.com:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=563&call=done&name=room&pass=12345on_play_done: /v1/rtmp/on_play_done app=rtmp&flashver=&swfurl=&tcurl=rtmp://rtmp.wunaozai.com:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=563&call=play_done&name=room&pass=12345on_update: /v1/rtmp/on_update app=rtmp&flashver=FMLE/3.0%20(compatible%3B%20FMSc/1.0)&swfurl=&tcurl=rtmp://120.24.210.62:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=547&call=update_publish&time=90×tamp=87360&name=roomon_connect: /v1/rtmp/on_connect app=rtmp&flashver=&swfurl=&tcurl=rtmp://rtmp.wunaozai.com:8081/rtmp&pageurl=&addr=113.74.127.195&epoch=178396146&call=connecton_play: /v1/rtmp/on_play app=rtmp&flashver=&swfurl=&tcurl=rtmp://rtmp.wunaozai.com:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=569&call=play&name=room&start=4294966296&duration=0&reset=0&pass=12345on_done: /v1/rtmp/on_done app=rtmp&flashver=&swfurl=&tcurl=rtmp://rtmp.wunaozai.com:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=569&call=done&name=room&pass=12345on_play_done: /v1/rtmp/on_play_done app=rtmp&flashver=&swfurl=&tcurl=rtmp://rtmp.wunaozai.com:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=569&call=play_done&name=room&pass=12345on_connect: /v1/rtmp/on_connect app=rtmp&flashver=&swfurl=&tcurl=rtmp://rtmp.wunaozai.com:8081/rtmp&pageurl=&addr=113.74.127.195&epoch=178403666&call=connecton_play: /v1/rtmp/on_play app=rtmp&flashver=&swfurl=&tcurl=rtmp://rtmp.wunaozai.com:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=574&call=play&name=room&start=4294966296&duration=0&reset=0&pass=12345on_update: /v1/rtmp/on_update app=rtmp&flashver=FMLE/3.0%20(compatible%3B%20FMSc/1.0)&swfurl=&tcurl=rtmp://120.24.210.62:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=547&call=update_publish&time=100×tamp=97311&name=roomon_update: /v1/rtmp/on_update app=rtmp&flashver=&swfurl=&tcurl=rtmp://rtmp.wunaozai.com:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=574&call=update_play&time=10×tamp=105504&name=room&pass=12345on_update: /v1/rtmp/on_update app=rtmp&flashver=FMLE/3.0%20(compatible%3B%20FMSc/1.0)&swfurl=&tcurl=rtmp://120.24.210.62:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=547&call=update_publish&time=110×tamp=107199&name=roomon_done: /v1/rtmp/on_done app=rtmp&flashver=&swfurl=&tcurl=rtmp://rtmp.wunaozai.com:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=574&call=done&name=room&pass=12345on_play_done: /v1/rtmp/on_play_done app=rtmp&flashver=&swfurl=&tcurl=rtmp://rtmp.wunaozai.com:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=574&call=play_done&name=room&pass=12345on_update: /v1/rtmp/on_update app=rtmp&flashver=FMLE/3.0%20(compatible%3B%20FMSc/1.0)&swfurl=&tcurl=rtmp://120.24.210.62:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=547&call=update_publish&time=120×tamp=117344&name=roomon_update: /v1/rtmp/on_update app=rtmp&flashver=FMLE/3.0%20(compatible%3B%20FMSc/1.0)&swfurl=&tcurl=rtmp://120.24.210.62:8081/rtmp&pageurl=&addr=113.74.127.195&clientid=547&call=update_publish&time=130×tamp=122815&name=room

1 113.74.127.195 [05/Aug/2018:16:18:08 +0800] PUBLISH "rtmp" "room" "" - 2646572 687 "" "FMLE/3.0 (compatible; FMSc/1.0)" (1m 46s) 2 113.74.127.195 [05/Aug/2018:16:19:49 +0800] PLAY "rtmp" "room" "pass=12345" - 413 542 "" "" (4s) 3 113.74.127.195 [05/Aug/2018:16:19:57 +0800] PLAY "rtmp" "room" "pass=12345" - 413 542 "" "" (4s) 4 113.74.127.195 [05/Aug/2018:16:20:05 +0800] PLAY "rtmp" "room" "pass=12345" - 413 542 "" "" (4s) 5 113.74.127.195 [05/Aug/2018:16:20:13 +0800] PLAY "rtmp" "room" "pass=12345" - 413 542 "" "" (4s) 6 113.74.127.195 [05/Aug/2018:16:30:39 +0800] PLAY "rtmp" "room" "pass=12345" - 413 871 "" "" (4s) 7 113.74.127.195 [05/Aug/2018:16:30:54 +0800] PLAY "rtmp" "room" "pass=12345" - 413 647163 "" "" (12s) 8 113.74.127.195 [05/Aug/2018:16:31:08 +0800] PUBLISH "rtmp" "room" "" - 4961955 409 "" "FMLE/3.0 (compatible; FMSc/1.0)" (1m 30s) 9 113.74.127.195 [05/Aug/2018:23:06:47 +0800] PUBLISH "rtmp" "room" "" - 425763 529 "" "FMLE/3.0 (compatible; FMSc/1.0)" (13s)10 113.74.127.195 [05/Aug/2018:23:08:29 +0800] PLAY "rtmp" "room" "pass=12345" - 413 871 "" "" (4s)11 113.74.127.195 [05/Aug/2018:23:08:37 +0800] PLAY "rtmp" "room" "pass=12345" - 413 871 "" "" (4s)12 113.74.127.195 [05/Aug/2018:23:08:45 +0800] PLAY "rtmp" "room" "pass=12345" - 413 871 "" "" (4s)13 113.74.127.195 [05/Aug/2018:23:09:05 +0800] PLAY "rtmp" "room" "pass=12345" - 413 926026 "" "" (17s)14 113.74.127.195 [05/Aug/2018:23:09:30 +0800] PUBLISH "rtmp" "room" "" - 7061016 409 "" "FMLE/3.0 (compatible; FMSc/1.0)" (2m 20s)

Application 创建一个RTMP应用，这里有点区别于http的locationTimeout 60s stocket超时，可以配合keepalive和ping值来实现不让服务器端长期处于监听连接客户端状态，实现快速关掉socketPing 3mping_timeout 30sRTMP ping用于检查活动连接的协议。发送一个特殊的包远程连接，在ping_timeout指定时间内期待一个回复，如果没有收到回复，连接断开max_streams 32设置RTMP流的最大数目，单一流数据最大限制，一般默认的32就可以了ack_window 5000000设置RTMP窗口的大小chunk_size 4096数据块大小 设置值越大CPU负载就越小max_queue最大队列数，一般默认即可max_message 1M输入数据消息的最大大小。所有输入数据消息都会保存在内存中，等待完成流媒体转发。在理论上传入的消息可以是非常大，对服务器稳定性影响较大，所以一般默认即可。out_queueout_corkBuflen 5s设置默认缓冲区长度。通常客户端发送播放前RTMP set_buflen命令并重置该设置访问控制AccessAllow/deny允许来自指定地址或者所有地址发布/播放Allow public 127.0.0.1Deny publish all;Allow play 192.168.0.0/24Deny play all;Exec命令Exce exec_options on;启动一些exec指令选项，通过一些exec事件来干预整个RTMP流可以仔细一些外部编解码功能Exec ffmpeg -i rtmp://localhost?src/$name -vcodec libx264 -vprofile baseline -g 10 -s 300x200 -acodec libfaac -ar 44100 -ac 1 -f flv rtmp://localhost/hls/$name 2>> /var/log/ffmpeg-$name.log;Exce_statc 类似exce，属于静态命令，不支持传递上下文参数Exec_kill_signal term;Exec_kill_signal user1;Exec_kill_signal 3;Exec_pull Exec_pushExec_publish指定与参数外部命令要在发布事件执行。Exec_play指定与要在打开事件执行外部命令Exec_play_done指定要在打开完成事件执行外部命令Exec_publish_doneExec_record_done例子exec_play bash -c “echo $addr $pageurl >> /tmp/clients”Exec_publish base -c “echo $addr $flashver >> /tmp/publishers”转录Exec_record_done ffmpeg -y -i $path -acodec libmp31ame -ar 44100 -ac 1 -vcodec libx264 $dirname/$basename.mp4Live 模式Live on切换直播模式，即一对多广播Meta on/copy/off奇幻发送元数据到客户端 默认onInterleave on/off切换交叉模式。在该模式下，音视频会在同一个RTMPchunk流中传输。默认为offwait_key on|off使视频流从一个关键帧开始，默认为offwait_video on|off在一个视频帧发送前禁用音频。默认off通过wait_key/wait_video进行组合以使客户端可以收到具有所有其他数据的视频关键帧。但这样会增加连接延迟。不过可以通过编解码器中调整关键帧间隔来减少延迟。Publish_notify on发送NetStream.Publish.Start和NetStream.Publish.Stop给用户，默认offDrop_idle_publisher 10s终止指定时间内闲置（没有音频、视频）的发布连接，默认为off。注意这个仅仅对于发布模式的连接起作用（发送publish命令之后）Sync 10ms同步音视频流。如果用户带宽不足以接收发布率，服务器会丢弃一些帧。这将导致同步问题。当时间戳差超过sync指定值，将会发送一个绝对帧来解决这个问题，默认为300msPlay_restart off使nginx-rtmp能够在发布启动或者停止时发送NetStream.Play.Start 和 NetStrem.Play.Stop到每个用户。如果关闭的话，那么每个用户就只能在回放的开始结束时收到该通知了。默认为onRecord 模式Record off|all|audio|video|keyframes|manual切换录制模式，流可以被记录到flv文件Off 不录制All 录制音频和视频AudioVideoKeyframes 只录制关键视频帧Manual 不自动启动录制，使用控制接口来进行启动和停止Record_path /tmp/rec指定录制的flv文件存放目录Record_suffix -%d-%b-%y-%T.flv录制后缀strftime格式Record_unique on|off是否添加时间戳到录制文件，防止文件被覆盖，默认offrecord_append on|off切换文件附加模式。开启后，录制时将新数据附加到旧文件后面。默认offrecord_lock on|off锁定文件，调用系统的fcntlrecord_max_size 128K设置录制文件的最大值Record_max_frames 2设置每个录制文件的视频帧最大数量Record_interval 1s/15m在这个指令指定的时间之后重启录制。默认off设置为0表示录制中无延迟。如果record_unique为off时所有的记录都会被写到同一个文件中。否则就会以时间戳区分在不同文件Record_notify on|off奇幻当定义录制启动或者停止文件时发送NetStream.Record.Start和NetStream.Record.Stop状态信息onStatus到发布者。应用Application rtmp{Live on;Record all;Record_path /var/rec;Recorder audio{Record audio;Record_suffix .audio.flv;}Recorder chunked{Record all;Record_interval 15s;Record_path /var/rec/chunked;}}创建录制块。可以在单个application中创建多个记录 。VOD媒体Play dir|http://loc 播放指定目录或者HTTP地址的flv或者mp4文件。注意HTTP播放是要在整个文件下载完后才开始播放。同一个play可以播放多个视频地址(用于负载)。MP4格式要在编解码都被RTMP支持才可以播放。一般常见的就是H264/AACApplication vod{Play /var/flvs;}Application vod_http{Play http://localhost/vod;}Play_temp_path /www设置远程VOD文件完全下载之后复制于play_temp_path之后的路径。空值的话禁用此功能。Play_local_path dir在播放前设置远程存储VOD文件路径，默认/tmpPlay_local_path /tmp/videos;Paly /tmp/videos http://localhost/videos表示播放视频，先播放本地缓存，如果没有的话，从localhost/videos下载到本地/tmp/videos后，在进行播放Relay模式Pull url [key=value]创建pull中继。主要是从远程服务器拉取流媒体。并进行重新发布。Url语法 [rtmp://]host[:port][/app[/playpath]] 如果application找不到那么将会使用本地application名，如果找不到playpath那么久用当前流名称。参数如下(使用Key=Value方式)app 明确application名Name 捆绑到relay的bending流名称。如果为空，那么会使用application中所有本地流tcUrlpageUrlswfUrlflashVerplayPathLiveStartStopStaticPull rtmp://cdn.example.com/main/ch?id=1234 name=channel;Push url [key=value]与pull类似，只是push推送发布流到远程服务器。Push_reconnect 1s在断开连接后，在push重新连接钱等待的时间，默认3秒Session_relay on;切换会话relay模式。在这种情况下关闭时relay销毁。Notify 模式这个功能主要是提供HTTP回调。当发送一些连接操作是，一个HTTP请求异步发送。命令处理会被暂停挂起，知道它返回结果代码。当HTTP返回2xx成功状态码时，RTMP会话继续。3xx状态码会使RTMP重定向到另一个从HTTP返回头获取到的application，否则连接丢失。其他状态码，连接断开。目前用来做简单的鉴权。On_connect url设置HTTP连接回调。当客户分发连接命令时。例子：On_connect http://localhost/my_auth;Location /on_connect{If($arg_flashver != “my_secret_flashver”){Rewrite ^.*$ fallback?permanent;}}On_play url设置HTTP播放回调。分发客户分发播放命令时。http {Location /redirect {Rewrite ^.*$ newname?permanent;}}Rtmp{Application myqpp{Live on;On_play http://localhost/redirect;}}On_publishOn_dooneOn_play_doneOn_publish_doneOn_record_doneOn_updateNotify_update_timeout设置on_update回调时间Notify_update_strict on|offNotify_relay_redirect onNotify_method get设置HTTP方法通知，默认是application/x-www-form-urlencodeed 的POST内容类型。有时候可能会需要GET方法，在nginx的http{}部分处理调用。在这种情况下可以使用arg_*变量去访问参数。例如如果是method为get时Location /on_play{If($arg_pageUrl ~* localhost){Return 200;}Return 500;}HLS 模式Hls on|off使application 切换HLS协议直播Hls_path /tmp/hls;设置HLS播放列表和分段目录。这一目录必须在nginx启动前就已经存在。Hls_fragment 15s;设置HLS分段长度，默认5秒，这个跟直播延迟有比较大的影响Hls_playlist_length 20m;设置HLS播放列表长度，默认30秒。这个跟直播缓存有关。Hls_sync time设置HLS时间戳同步阈值。默认2ms。这个功能防止由低分辨率RTMP(1KHz)转换到高分辨率MPEG-TS(90KHz)之后出现的噪音。Hls_continuous on|off切换HLS连续模式，默认off。Hls_nested on|off切换HLS嵌套模式。默认off。Hls_cleanup on|off;切换HLS清理。默认onAccessLog日志Access_log off|path [format_name]Log_format new_format ‘$remote_addr';Access_log logs/rtmp_access.log new_format;Log_format 指定日志格式创建指定的日志格式。日志格式看起来很像 nginx HTTP 日志格式。日志格式里支持的几个变量有：* connection - 连接数。* remote_addr - 客户端地址。* app - application 名。* name - 上一个流名。* args - 上一个流播放/发布参数。* flashver - 客户端 flash 版本。* swfurl - 客户端 swf url。* tcurl - 客户端 tcUrl。* pageurl - 客户端页面 url。* command - 客户端发送的播放/发布命令：NONE、PLAY、PUBLISH、PLAY+PUBLISH。* bytes_sent - 发送到客户端的字节数。* bytes_received - 从客户端接收到的字节数。* time_local - 客户端连接结束的本地时间。* session_time - 持续连接的秒数。* session_readable_time - 在可读格式下的持续时间。默认的日志格式叫做 combined。这里是这一格式的定义：$remote_addr [$time_local] $command "$app" "$name" "$args" - $bytes_received $bytes_sent "$pageurl" "$flashver" ($session_readable_time)Limits限制max_connections number;设置rtmp引擎最大连接数，默认offApplication hls{Live on;Hls on;Hls_path /tmp/hls;Hls_fragment 15s;}