Command to check in what resolution can the camera write?

Question

Raspberry Pi

There is an action camera, it works in webcam mode.
I see it in the system as
device /dev/video0
device /dev/video1
What is the command to check in what resolutions the camera can write?

Answer 1

I think there are different ways. For example, you can install the v4l-utils package:

$ v4l2-ctl --list-formats-ext
ioctl: VIDIOC_ENUM_FMT
  Index       : 0
  Type        : Video Capture
  Pixel Format: 'YUYV'
  Name        : YUYV 4:2:2
    Size: Discrete 640x480
      Interval: Discrete 0.033s (30.000 fps)
      Interval: Discrete 0.040s (25.000 fps)
      Interval: Discrete 0.050s (20.000 fps)
      Interval: Discrete 0.067s (15.000 fps)
      Interval: Discrete 0.100s (10.000 fps)
      Interval: Discrete 0.200s (5.000 fps)
    Size: Discrete 352x288
      Interval: Discrete 0.033s (30.000 fps)
      Interval: Discrete 0.040s (25.000 fps)
      Interval: Discrete 0.050s (20.000 fps)
      Interval: Discrete 0.067s (15.000 fps)
      Interval: Discrete 0.100s (10.000 fps)
      Interval: Discrete 0.200s (5.000 fps)
    Size: Discrete 320x240
      Interval: Discrete 0.033s (30.000 fps)
      Interval: Discrete 0.040s (25.000 fps)
      Interval: Discrete 0.050s (20.000 fps)
      Interval: Discrete 0.067s (15.000 fps)
      Interval: Discrete 0.100s (10.000 fps)
      Interval: Discrete 0.200s (5.000 fps)
    Size: Discrete 176x144
      Interval: Discrete 0.033s (30.000 fps)
      Interval: Discrete 0.040s (25.000 fps)
      Interval: Discrete 0.050s (20.000 fps)
      Interval: Discrete 0.067s (15.000 fps)
      Interval: Discrete 0.100s (10.000 fps)
      Interval: Discrete 0.200s (5.000 fps)
    Size: Discrete 160x120
      Interval: Discrete 0.033s (30.000 fps)
      Interval: Discrete 0.040s (25.000 fps)
      Interval: Discrete 0.050s (20.000 fps)
      Interval: Discrete 0.067s (15.000 fps)
      Interval: Discrete 0.100s (10.000 fps)
      Interval: Discrete 0.200s (5.000 fps)