列出我们本机的设备：ffmpeg -list_devices true -f dshow -i dummy
.ffmpeg -r 25 -f dshow -s 640*480 -i video="WebCam SC-10HDD12636N":audio="麦克风 (Realtek High Definition Au" -vcodec libx264 -b:v 600k -preset:v ultrafast -acodec aac -ab 128k -f flv rtmp://192.168.0.143/live/stream
.ffmpeg -f dshow -s 640*480 -i video="WebCam SC-10HDD12636N":audio="麦克风 (Realtek High Definition Au" -vcodec libx264 -acodec aac -preset:v ultrafast -tune:v zerolatency -f flv rtmp://192.168.0.143/live/stream
ffmpeg -f dshow -i video="WebCam SC-10HDD12636N":audio="麦克风 (Realtek High Definition Au" -vcodec libx264 -acodec aac -preset:v ultrafast -tune:v zerolatency -f rtsp rtsp://127.0.0.1/live.sdp
ffmpeg -f dshow -i video="WebCam SC-10HDD12636N" -s 640x360 -vcodec libx264 -b:v 1000k -ab 128k -f flv rtmp://192.168.0.143/live/stream