FFmpeg 在Windows的命令

• 打印DirectShow支持的设备列表

ffmpeg -list_devices true -f dshow -i dummy

• 打开摄像头，录像保存在out.mp4

 ffmpeg -f dshow -i video="Lenovo EasyCamera" out.mp4

• 打开麦克风，录音保存在out.mp3

ffmpeg -f dshow -i audio="@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}wave_{7DB78E33-271D-431B-9E43-F4A54BD675BD}" out.mp4

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• 打开摄像头，打开麦克风，录音录像保存在out.mp4

ffmpeg -f dshow -i video="Lenovo EasyCamera":audio="@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}wave_{7DB78E33-271D-431B-9E43-F4A54BD675BD}" out.mp4

• 打开摄像头，打开麦克风，录音录像10s，保存在out.mp4

ffmpeg -t 10 -f dshow -i video="Lenovo EasyCamera":audio="@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}wave_{7DB78E33-271D-431B-9E43-F4A54BD675BD}" out.mp4

• 打开摄像头，帧率25，h264视频编码，推送视频流到远程rtp地址

ffmpeg -r 25 -f dshow -i video="Lenovo EasyCamera" -vcodec libx264 -preset:v ultrafast -tune:v zerolatency -f h264 rtp://192.168.1.10:6666 

• 打开麦克风，推送音频流到远程rtp地址

ffmpeg -f dshow -i audio="@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}wave_{7DB78E33-271D-431B-9E43-F4A54BD675BD}" -f mp2 udp://192.168.1.103:6666

• Watch a stream over UDP, with a max reordering delay of 0.5 seconds:

ffplay -max_delay 500000 -rtsp_transport udp rtsp://server/video.mp4

• Watch a stream tunneled over HTTP:

ffplay -rtsp_transport http rtsp://server/video.mp4

• Send a stream in realtime to a RTSP server, for others to watch:

ffmpeg -re -i input -f rtsp -muxdelay 0.1 rtsp://server/live.sdp

• Receive a stream in realtime:

ffmpeg -rtsp_flags listen -i rtsp://ownaddress/live.sdp output

• Use ffmpeg to stream over UDP to a remote endpoint:

ffmpeg -i input -f format udp://hostname:port

• Use ffmpeg to stream in mpegts format over UDP using 188 sized UDP packets, using a large input buffer:

ffmpeg -i input -f mpegts udp://hostname:port?pkt_size=188&buffer_size=65535

• Use ffmpeg to receive over UDP from a remote endpoint:

ffmpeg -i udp://[multicast-address]:port ...

• ffmpeg转发

ffmpeg -i "e:	t.sdp" -vcodec flv -acodec aac -ab 8000 -f flv rtmp://192.168.0.201:1935/live/stream3 

• ffmpeg转发

ffmpeg -i "vlc.sdp" -vcodec flv -acodec aac -ab 8000 -f flv rtp://192.168.1.103:5004 

• 推流的时候要将音频和视频分开推，才能够用vlc.sdp播放

ffmpeg -fflags +genpts -re -i 4.ts -an -vcodec copy -f rtp rtp://192.168.1.103:5004 -vn -acodec copy -f rtp rtp://192.168.1.103:5005 > vlc.sdp

ffplay rtp://192.168.1.101:5004/test.sdp

• 下面命令实现了发送H.264裸流“chunwan.h264”至地址rtp://233.233.233.223:6666

ffmpeg -re -i 4.ts -vcodec copy -f rtp rtp://192.168.1.103:6666 > test0207.sdp