3.1 KiB
一些常用的ffmpeg命令：
生产视频关键针
ffmpeg -i input.mp4 -vf "select='eq(pict_type,I)'" -vsync 0 keyframes_%03d.png
设备列表
.\ffmpeg.exe -list_devices true -f dshow -i dummy
通过 screen-capture-recorder进行录制
ffmpeg -f dshow -i video="screen-capture-recorder" -s 800x600 -offset_x 0 -offset_y 0 -r 20 screen-capture.mp4
ffmpeg -f dshow -i video="screen-capture-recorder" -r 20 screen-capture.mp4
其他命令
-f dshow -i audio="麦克风 (Realtek(R) Audio)" -f dshow -i audio="virtual-audio-capturer" -filter_complex amix=inputs=2:duration=first:dropout_transition=2 -f gdigrab -i desktop -vcodec libx264 -r 60.97 -b:v 1500K -codec:a aac -ac 2 -ar 44100 -pix_fmt yuv420p -tune zerolatency -preset ultrafast -f flv "rtmp://192.168.8.156:1935"
-f gdigrab -i desktop -f dshow -i audio="麦克风 (Realtek(R) Audio)" -f dshow -i audio="virtual-audio-capturer" -filter_complex amix=inputs=2:duration=first:dropout_transition=2 -vcodec libx264 -preset ultrafast -acodec libmp3lame
ffmpeg -re -i in.mp4 -c copy -f flv rtmp://localhost:1935/live/stream
ffmpeg -f dshow -i audio="麦克风 (Realtek High Definition Au" -f dshow -i audio="virtual-audio-capturer" -filter_complex amix=inputs=2:duration=first:dropout_transition=2 -f gdigrab -i desktop -vcodec libx264 -r 60.97 -b:v 1500K -codec:a aac -ac 2 -ar 44100 -pix_fmt yuv420p -tune zerolatency -preset ultrafast -f flv "rtmp://localhost/live/livestream"
-codec:a aac
ffmpeg.exe -f dshow -i audio="麦克风 (Realtek(R) Audio)" -thread_queue_size 512 -f dshow -i audio="virtual-audio-capturer" -filter_complex amix=inputs=2:duration=first:dropout_transition=2 -thread_queue_size 64 -f gdigrab -i desktop -vcodec libx264 -preset ultrafast -codec:a aac -ac 2 -ar 44100 -tune zerolatency -q:a 0 abc.pm4
ffmpeg.exe -f dshow -i audio="麦克风 (Realtek(R) Audio)" -thread_queue_size 512 -f dshow -i audio="virtual-audio-capturer" -filter_complex amix=inputs=2:duration=first:dropout_transition=2 -thread_queue_size 64 -f gdigrab -i desktop -vcodec libx264 -preset ultrafast -codec:a aac -ac 2 -ar 44100 -tune zerolatency -q:a 0 abc.mp4
ffmpeg.exe -f dshow -i audio="麦克风 (Realtek(R) Audio)" -thread_queue_size 512 -f dshow -i audio="virtual-audio-capturer" -filter_complex amix=inputs=2:duration=first:dropout_transition=2 -thread_queue_size 64 -f gdigrab -i desktop -vcodec libx264 -preset ultrafast -codec:a aac -ac 2 -ar 44100 -tune zerolatency -q:a 0 abc.mp4
ffmpeg.exe -f dshow -i audio="麦克风 (Realtek(R) Audio)" -thread_queue_size 512 -f dshow -i audio="virtual-audio-capturer" -filter_complex amix=inputs=2:duration=first:dropout_transition=2 -codec:a aac -ac 2 -ar 44100 -tune zerolatency -q:a 0 abc.wav
ffmpeg.exe -f dshow -i audio="麦克风 (Realtek(R) Audio)" -f dshow -i audio="virtual-audio-capturer" -filter_complex amix=inputs=2:duration=first:dropout_transition=2 123.wav
ffmpeg.exe -f dshow -i audio="麦克风 (Realtek(R) Audio)" -thread_queue_size 512 11.wav
ffmpeg.exe -f dshow -i audio="麦克风 (Realtek(R) Audio)" -thread_queue_size 512 -f dshow -i audio="virtual-audio-capturer" -filter_complex amix=inputs=2:duration=first:dropout_transition=2 124.wav