Linux cam resolution info

v4l2-ctl --list-formats-ext

 Index       : 1
 Type        : Video Capture
 Pixel Format: 'MJPG' (compressed)
 Name        : Motion-JPEG
  Size: Discrete 640x480
   Interval: Discrete 0.033s (30.000 fps)
   Interval: Discrete 0.067s (15.000 fps)

Set locale via localectl with Caps_Lock toggle

localectl set-x11-keymap "us,ru" "" "" "grp:caps_toggle"