simply lists all the entries in that folder, which I can navigate to in Dolphin anyway.
However, if I navigate to /dev/v4l there are 2 subfolders by-path
The former has one entry forfile:///dev/v4l/by-path/pci-0000:00:1a.7-usb-0:2:1.0-video-index0
(not sure what that is)
and the latter file:///dev/v4l/by-id/usb-Chicony_Electronics_Co.__Ltd._CNF7051_SN0001-video-index0
(which is the webcam).
Obviously the Linux model is different and perhaps I'm spoilt by Win because once a device driver is installed, any application capable of using it can see it. In the case of video capture, those apps can all see the EasyCap though some can use it better than others. Which is why I was looking for something more reliable in Linux and PCLos in particular.
Following the advice for within vlc produces
Your input can't be opened:
VLC is unable to open the MRL 'v4l2:// /dev/video0:input=1:width=720:height=576'. Check the log for details.
For various values of x and y (though the only video specific entry in /dev is video0).
Is there any significance to the commands referring to v4l2
rather than v4l as on my system?