live555 + ffmpeg进行录像

安装live555

官方教程及下载地址：http://www.live555.com/liveMedia/#config-unix

下载live555-latest.tar.gz文件，并解压。

打开live目录，运行如下指令：

1	./genMakefiles <os-platform>

\<os-platform>为当前平台，如linux系统则输入

1	./genMakefiles linux

然后make即可（也可以make后进行make install将执行文件加入/usr/local/bin目录）

测试读取本地流文件

进入live目录下的mediaServer文件夹，将需要读取的留文件surfing.265放在该文件夹下，命令端输入

1	./live555MediaServer

[heroin@localhost mediaServer]$ ./live555MediaServer 
LIVE555 Media Server
	version 0.90 (LIVE555 Streaming Media library version 2017.06.04).
Play streams from this server using the URL
	rtsp://192.168.18.132:8554/<filename>
where <filename> is a file present in the current directory.
Each file's type is inferred from its name suffix:
	".264" => a H.264 Video Elementary Stream file
	".265" => a H.265 Video Elementary Stream file
	".aac" => an AAC Audio (ADTS format) file
	".ac3" => an AC-3 Audio file
	".amr" => an AMR Audio file
	".dv" => a DV Video file
	".m4e" => a MPEG-4 Video Elementary Stream file
	".mkv" => a Matroska audio+video+(optional)subtitles file
	".mp3" => a MPEG-1 or 2 Audio file
	".mpg" => a MPEG-1 or 2 Program Stream (audio+video) file
	".ogg" or ".ogv" or ".opus" => an Ogg audio and/or video file
	".ts" => a MPEG Transport Stream file
		(a ".tsx" index file - if present - provides server 'trick play' support)
	".vob" => a VOB (MPEG-2 video with AC-3 audio) file
	".wav" => a WAV Audio file
	".webm" => a WebM audio(Vorbis)+video(VP8) file
See http://www.live555.com/mediaServer/ for additional documentation.
(We use port 8000 for optional RTSP-over-HTTP tunneling, or for HTTP live streaming (for indexed Transport Stream files only).)

根据输出rtsp://192.168.18.132:8554/<filename>，重新打开另一命令窗口做如下输入(保持当前窗口运行状态)

1	ffplay rtsp://192.168.18.132:8554/surfing.265

即可展示流文件中的视频。

录像

1	ffmpeg -loglevel debug -i "rtsp://172.16.1.100/1.sdp" -vcodec libx264 -subq 5 -g 250 -qmin 10 -qmax 51 -i_qfactor 0.71 out.mp4