Need help understanding what I am doing wrong with capture

[jewing23]

I have read through the forums and documents and I must be missing something. I am new to using vlc from command line, I simply want to record audio and video from a windows default device for 15 seconds and save to a file. I do not want to see live cam image on my monitor while recording. I have had luck getting the audio portion but no video.
My command
vlcportable.exe dshow:// --sout=#transcode{vcodec=mp4v,vb=1024,fps=30,width=320,acodec=mp2a,ab=128,scale=1,channels=2,deinterlace,audio-sync}:standard{access=file,mux=ps,dst="C:\abc\Output.mp4"} --extraintf=logger -vvv

I am using VLC portable 2.21 on Windows 10