在办公室远程监控家中电脑摄像头，在伟大的Ubuntu上实现。
1、安装软件：
sudo apt-get install ffmpeg
备份原始配制：
sudo mv /etc/ffserver.conf /etc/ffserver.conf_backup
编辑配制，把它改为下面的内容：
sudo gedit /etc/ffserver.conf
Port 8090
# bind to all IPs aliased or not
BindAddress 0.0.0.0
# max number of simultaneous clients
MaxClients 1000
# max bandwidth per-client (kb/s)
MaxBandwidth 10000
# Suppress that if you want to launch ffserver as a daemon.
#NoDaemon
File /tmp/feed1.ffm
FileMaxSize 5M
# FLV output - good for streaming
# the source feed
Feed feed1.ffm
# the output stream format - FLV = FLash Video
Format flv
VideoCodec flv
# this must match the ffmpeg -r argument
VideoFrameRate 15
# generally leave this is a large number
VideoBufferSize 80000
# another quality tweak
VideoBitRate 200
# quality ranges - 1-31 (1 = best, 31 = worst)
VideoQMin 1
VideoQMax 5
VideoSize 352x288
# this sets how many seconds in past to start
PreRoll 0
# wecams don't have audio
Noaudio
# ASF output - for windows media player
# the source feed
Feed feed1.ffm
# the output stream format - ASF
Format asf
VideoCodec msmpeg4
# this must match the ffmpeg -r argument
VideoFrameRate 15
# generally leave this is a large number
VideoBufferSize 80000
# another quality tweak
VideoBitRate 200
# quality ranges - 1-31 (1 = best, 31 = worst)
VideoQMin 1
VideoQMax 5
VideoSize 352x288
# this sets how many seconds in past to start
PreRoll 0
# wecams don't have audio
Noaudio
运行：
ffserver
再开一终端，也可以让ffserver在后台运行：
ffmpeg -r 15 -s 352x288 -f video4linux2 -i /dev/video0 http://localhost:8090/feed1.ffm
在另一台电脑上,用支持网络的播放器打开：
mms://xx.xx.xx.xx:8090/test.asf
xx.xx.xx.xx 为装有Ubuntu的公网ip或域名。
路由器用户要开端口映射或dmz主机。