4. screencast (windows)

Download:
screen-capture-recorder-to-video-windows-free (screencapturer)
Install
View devices:
ffmpeg -list_devices true -f dshow -i dummy
Screencast:
ffmpeg -f dshow -r 10 -i audio="virtual-audio-capturer"­:audio="Микрофон (Cirrus Logic CS4206B ":video="screen-capture-record­er" -vcodec h264 -b:v 5000k -acodec aac -strict experimental -ac 2 -b:a 320k -vf "scale=-1:1080" -y out.mp4