live555中openRTSP用法

openRTSP

 A command-line RTSP client

openRTSP是一个命令行程序,它可以用来打开,流化,接收并且录制指定的RTSP视频链接媒体流(如rtsp://开头的URL)

(一个相关的程序“playSIP”可以用来播放或者录制一个SIP会话)

本文将要介绍如下内容

  • Basic operation  基本操作
  • Playing without receiving 播放不接收
  • Playing-time options 播放时选项
  • Streaming access-controlled sessions 流式访问控制选项
  • Outputting a ".mov", ".mp4", or ".avi"-format file 输出一个mov, mp4, avi 格式文件
  • Periodic file output  周期的文件输出
  • 'Trick play' options “特技播放”选项
  • Other options  其他选项
  • A note about RealAudio and RealVideo sessions 关于RealVideo和RealAudio会话注意事项
  • Source code  源码
  • Support and customization 支持与定制
  • Summary of command-line options 选项汇总

 

其实本文主要内容是openRTSP一些选项的用法,所以将“选项汇总”放在前面来介绍。

Summary of command-line options

(for "openRTSP" and "playSIP")

 

-4 output a '.mp4'-format file (to 'stdout', unless the "-P " option is also given)

输出一个“mp4”格式文件(到'标准输出',除非同时有选项“-P ”给定区间时间间隔)
-a play only the audio stream (to 'stdout', unless the "-P " option is also given)

只输出音频流(到'标准输出',除非同时有选项“-P ”给定区间时间间隔)
-A specify the static RTP payload format number of the audio codec to request from the server ("playSIP" only)

指定从服务器请求的音频编解码器的静态RTP负载格式数量(仅用于“playSIP”)
-b change the output file buffer size

更改输出文件的缓冲区大小 
-B change the input network socket buffer size

更改输入网络套接字缓冲区大小
-c play continuously

连续播放 
-C Explicitly ask for a multicast stream even if the server's "DESCRIBE" response doesn't specify a multicast address. (Note that not all servers will support this.) ("openRTSP" only)

明确要求多播流,即使服务器的“DESCRIBE”响应不指定多播地址。(注意,并非所有的服务器都将支持此功能。)(仅对于“openRTSP”)
-d  specify an explicit duration

指定一个明确的持续时间
-D specify a maximum period of inactivity to wait before exiting

指定退出之前要等待的最长非活动状态时间
-f specify the video frame rate (used only with "-q", "-4", or "-i")

指定的视频帧速率(仅用于“-q”,“-4”或“ -i”)
-F specify a prefix for each output file name

指定每个输出文件名前缀
-g specify a user agent name to use in outgoing requests

指定输出请求中使用的用户代理名
-h  specify the video image height (used only with "-q", "-4", or "-i")

指定视频图像的高度(仅用于“-q”,“-4”或“ -i”)
-H output a QuickTime 'hint track' for each audio/video track (used only with "-q" or "-4")

为每个音频/视频轨道输出QuickTime的“索引轨道”
-i output a '.avi'-format file (to 'stdout', unless the "-P " option is also given)

输出一个“avi”格式文件(到'标准输出',除非同时有选项“-P ”给定区间时间间隔)
-I specify a particular network interface on which to receive data

指定要接收数据的特定网络接口 
-k specify a user name and password that's required to authenticate an incoming "REGISTER" command (used with "-R" only)

指定验证到来的“REGISTER”命令需要的用户名和密码(仅和“-R”使用) 
-l try to compensate for packet losses (used only with "-q", "-4", or "-i")

尽量弥补丢包(仅和“-q”,“-4”或“ - i”使用)
-m output each incoming frame into a separate file

输出的每个到来的帧到一个单独的文件
-M specify the MIME subtype of a dynamic RTP payload format for the audio codec to request from the server ("playSIP" only)

为音频编解码器指定一个动态的RTP负载格式的MIME子类型来请求服务器(仅用于“playSIP”)
-n be notified when RTP data packets start arriving

RTP数据包到达时通知
-o request the server's command options, without sending "DESCRIBE" ("openRTSP" only)

请求服务器的命令选项,而不发送“DESCRIBE”(仅用于“openRTSP”)
-O don't request the server's command options; just send "DESCRIBE" ("openRTSP" only)

不请求服务器的命令选项;只要发送“DESCRIBE”(仅用于“openRTSP”)
-p specify the client port number(s)

指定客户端的端口号
-P write new output files every seconds

每一个时间区间写新的输出文件
-q output a QuickTime '.mov'-format file (to 'stdout', unless the "-P " option is also given)

输出一个“.mov”格式文件(到'标准输出',除非同时有选项“-P ”给定区间时间间隔)
-Q output 'QOS' statistics about the data stream (when the program exits)

输出关于数据流统计的QoS“(程序退出时)
-r play the RTP streams, but don't receive them

播放RTP流,但不接收他们
-R (or -R ) Waits for an incoming "REGISTER" command, specifying a "rtsp://" URL to play. This option is used instead of a "rtsp://" URL on the command line. ("openRTSP" only)

等待到来的“注册”命令,指定要播放端口号. 这个选项是用来代替命令行中的“rtsp://”URL。 (仅用于“openRTSP”)
-s request that the server seek to the specified time (in seconds) before streaming

请求服务器在流化前搜索到指定的时间(以秒为单位) 用于“trick play”
-S assume a simple RTP payload format (skipping over a special header of the specified size)

假设一个简单的RTP负载格式(跳过指定大小的特殊头)
-t stream RTP/RTCP data over TCP, rather than (the usual) UDP. ("openRTSP" only)

通过TCP流化RTP / RTCP数据,而不是通过(通常的)的UDP。 (仅用于“openRTSP”) 
-T like "-t", except using RTSP-over-HTTP tunneling. ("openRTSP" only)

类似“-t”,除了使用RTSP-over-HTTP隧道。 (仅用于“openRTSP”) 
-u specify a user name and password for digest authentication

指定摘要式身份验证的用户名和密码 
-U request that the server seek to the specified absolute time (format: "YYYYMMDDTHHMMSSZ" or "YYYYMMDDTHHMMSS.Z") before streaming

请求服务器在流化前搜索到指定的绝对时间
-v play only the video stream (to 'stdout', unless the "-P " option is also given)

只输出视频流(到'标准输出',除非同时有选项“-P ”给定区间时间间隔)
-V print less verbose diagnostic output

打印更加简洁诊断输出 
-w  specify the video image width (used only with "-q", "-4", or "-i")

指定视频图像的宽度
-y try to synchronize the audio and video tracks (used only with "-q" or "-4")

尝试同步音频和视频轨道
-z  request that the server scale the stream (fast-forward, slow, or reverse play)

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