How to capture video and audio at the same time with ffmpeg under Windows?

Question

Audio

I'm trying to capture both video and audio at the same time using ffmeg under Windows. I cannot use other capture programs - although if there are console programs, please recommend.
I found a pretty decent command line (with a bunch of options) and the video is decent quality, but no sound. You need to add sound. About capturing with sound is written here:
www.trishtech.com/2018/02/record-windows-desktop-screen-with-sound-using-ffmpeg
They write that you need to install direct show. After that, the first method stops working,
and the line from the article like:
ffmpeg -f dshow -i video="UScreenCapture":audio="Stereo Mix (Realtek High Definition Audio)" "C:\videos\out.mp4"
writes sound, but does something terrible with the video (everything falls into squares and stripes).
Can you help me with a good command line?
Everything happens under Windows.

Answer 1

The following command worked for me:
ffmpeg.exe -y -rtbufsize 100M -f gdigrab -framerate 30 -probesize 10M -draw_mouse 1 -i desktop -f dshow -i audio=" Stereo Mix (Realtek High Definition Audio)" -c:v libx264 -r 30 -preset ultrafast -tune zerolatency -crf 25 -pix_fmt yuv420p screen.mp4
Apply two filters -f gdigrab to capture screen video and -f dshow to capture audio