Hi, https://en.wikipedia.org/wiki/USB_video_device_class#Operating_system_support includes the statement "... as of July 2017 support for still-image capture is not yet implemented."
Reference 4 still shows "Still image capture No". Anyone here able to comment? Otherwise I can ask in the Linux media development mailing list. linux-me...@vger.kernel.org I'm no expert with UVC or Kernel but updating the Wikipedia article is easy enough. Thx, ... P. -- VoIP: +1 604 670 0140 work: en.wikibooks.org/wiki/User:PeterEasthope