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How I can get web-cams list using VLC command line?
If I using FFmpeg, I can write:
$ ffmpeg -list_devices true -f dshow -i dummy
and get list of names web-cameras that I can using into the scripts to get video from this web-cameras.
How I can do the same using VLC?
AFAIK, this is not possible to do through VLC itself. You will probably have to do this through your OS. Although, there maybe a plugin that allows for this.
This blog article contains a section that discusses doing something like this on Ubuntu Linux but involves having to physically plug the camera in:
http://clusterbleep.net/blog/2010/07/13/webcam-recording-using-vlc-on-linux/
However, there is more in-depth treatment in this Stackoverflow question on how to get a list of cameras through the OS. It lists a series of other articles for each major OS:
How to get a list of video capture devices (web cameras) on linux ( ubuntu )? (C/C++)