ffmpeg -f gdigrab -i desktop -r 10 out.webm
ffmpeg -r 5 -f vfwcap -i 0 -s 176x144 -f rawvideo -pix_fmt yuv420p ss.yuv
.webm: html5 video type
-r: frame rate
-an: disable audio
http://blog.sina.com.cn/s/blog_53b3dc830100mrd0.html
ffmpeg -f gdigrab -i desktop -r 10 out.webm
ffmpeg -r 5 -f vfwcap -i 0 -s 176x144 -f rawvideo -pix_fmt yuv420p ss.yuv
.webm: html5 video type
-r: frame rate
-an: disable audio
http://blog.sina.com.cn/s/blog_53b3dc830100mrd0.html