optional rem pre ntp 做了 refs sample left following

一、采集：使用python調用攝像頭采集，原設想是使用樹莓派攝像頭采集，但是經費緊張買不起，先用攝像頭湊合下，反正很簡單。 原理就是先錄一小段視頻，然後循環播放，用celery做任務控制，每5秒鐘錄一段很小的視頻，然後再循環錄制。控制錄制開始和停止的方法就是在redis鐘設置一個鍵，錄像程序運行的前提是這個鍵允許錄制，如果要求錄制停止就把這個鍵設置為停止。每5秒循環錄制。正式使用後用python調用ffmpeg的命令進行推流直播，錄制視頻的格式是avi格式，要記得定時刪除。錄視頻使用opencv的cv2庫。註意安裝最新版的opencv 二、安裝simple rtmp server：從github上下載simple rtmp server，使用rtmp播放https://github.com/ossrs/srs。 安裝方法http://blog.csdn.net/Henry_wk/article/details/50377881 安裝時記得apt-get的源要使用默認源 安裝好之後改配置文件，目錄在trunk/conf/rtmp.conf，配置文件如下

# the config for srs to delivery RTMP # @see https://github.com/ossrs/srs/wiki/v1_CN_SampleRTMP # @see full.conf for detail config. listen 1935; max_connections 1000; daemon off; srs_log_tank console; vhost __defaultVhost__ { transcode { # whether the transcode enabled. # if off, donot transcode. # default: off. enabled on; # the ffmpeg ffmpeg ./objs/ffmpeg/bin/ffmpeg; # the transcode engine for matched stream. # all matched stream will transcoded to the following stream. # the transcode set name(ie. hd) is optional and not used. engine example { # whether the engine is enabled # default: off. enabled on; # input format, can be: # off, do not specifies the format, ffmpeg will guess it. # flv, for flv or RTMP stream. # other format, for example, mp4/aac whatever. # default: flv iformat avi; # ffmpeg filters, follows the main input. vfilter { # the logo input file. i ./doc/ffmpeg-logo.png; # the ffmpeg complex filter. # for filters, @see: http://ffmpeg.org/ffmpeg-filters.html filter_complex ‘overlay=10:10‘; } # video encoder name. can be: # libx264: use h.264(libx264) video encoder. # copy: donot encoder the video stream, copy it. # vn: disable video output. vcodec libx264; # video bitrate, in kbps # @remark 0 to use source video bitrate. # default: 0 vbitrate 1500; # video framerate. # @remark 0 to use source video fps. # default: 0 vfps 25; # video width, must be even numbers. # @remark 0 to use source video width. # default: 0 vwidth 768; # video height, must be even numbers. # @remark 0 to use source video height. # default: 0 vheight 320; # the max threads for ffmpeg to used. # default: 1 vthreads 12; # x264 profile, @see x264 -help, can be: # high,main,baseline vprofile main; # x264 preset, @see x264 -help, can be: # ultrafast,superfast,veryfast,faster,fast # medium,slow,slower,veryslow,placebo vpreset medium; # other x264 or ffmpeg video params vparams { # ffmpeg options, @see: http://ffmpeg.org/ffmpeg.html t 100; # 264 params, @see: http://ffmpeg.org/ffmpeg-codecs.html#libx264 coder 1; b_strategy 2; bf 3; refs 10; } # audio encoder name. can be: # libfdk_aac: use aac(libfdk_aac) audio encoder. # copy: donot encoder the audio stream, copy it. # an: disable audio output. acodec libfdk_aac; # audio bitrate, in kbps. [16, 72] for libfdk_aac. # @remark 0 to use source audio bitrate. # default: 0 abitrate 70; # audio sample rate. for flv/rtmp, it must be: # 44100,22050,11025,5512 # @remark 0 to use source audio sample rate. # default: 0 asample_rate 44100; # audio channel, 1 for mono, 2 for stereo. # @remark 0 to use source audio channels. # default: 0 achannels 2; # other ffmpeg audio params aparams { # audio params, @see: http://ffmpeg.org/ffmpeg-codecs.html#Audio-Encoders # @remark SRS supported aac profile for HLS is: aac_low, aac_he, aac_he_v2 profile:a aac_low; bsf:a aac_adtstoasc; } # output format, can be: # off, do not specifies the format, ffmpeg will guess it. # flv, for flv or RTMP stream. # other format, for example, mp4/aac whatever. # default: flv oformat flv; # output stream. variables: # [vhost] the input stream vhost. # [port] the intput stream port. # [app] the input stream app. # [stream] the input stream name. # [engine] the tanscode engine name. output rtmp://127.0.0.1:[port]/[app]?vhost=[vhost]/[stream]_[engine]; } } }

改好配置文件後啟動srs，命令./obj/srs -c conf/rtmp這樣就可以了 三、編碼、推流： 這個都使用工具完成了，是使用shell命令推流，命令為ffmpeg -re -i ./output.avi -vcodec libx264 -acodec copy -f flv -y rtmp://192.168.56.101/live/livestream; 是使用.246編碼 四、分發： 用nginx反向代理，在nginx配置文件中加入如下，位置是和http同級

stream{ upstream proxybackend{ server localhost:1935; } server { listen 8888; proxy_pass proxybackend; } }

五、解碼、播放：都用vlc media player來做了。http://mirror.os6.org/videolan/vlc/2.2.6/win32/vlc-2.2.6-win32.exe 六、播放地址是：rtmp://192.168.56.101/live/livestream 七、沒有互動沒有彈幕沒有打賞沒有美顏，就是那麽任性 八、關於循環錄制推流的代碼還在進一步測試中

使用ffmpeg進行網絡直播