CLI Usage

The CamCap command-line tool is installed as /usr/bin/camcap.

This tool uses libcamcap to manage webcams and take pictures. An example of how to capture an image to a JPEG file:

$ camcap size 800 600 jpg output.jpg

- setting format to 800 x 600
- taking JPEG image: output.jpg

The help command will display the full list of available commands:

$ camcap help

Usage:

    camcap <cmd1> <cmd2> ...

Where commands are interpreted from left-to-right.
Valid commands are:

    help                    Show this help text.
    initialize              Initialize the camera (autodetect).
...

To see what the camera and libcamcap supports, run the describe command after the camera has been initialized:

$ camcap initialize describe

- initializing camera:  /dev/video0
CamCap v0.0.1-2150
Filename:       "/dev/video0"
Initialized:    true
Driver name:    uvcvideo v4.4.40
Device name:    USB 2.0 Camera
Location:       usb-0000:00:0b.0-1
Flags:          0x85200001
                The device supports the single-planar API through the Video Capture interface.
                The device supports the struct v4l2_pix_format extended fields.
                The device supports the read() and/or write() I/O methods.
                The device supports the streaming I/O method.
                The driver fills the device_caps field.
Device input #0:
        name:   Camera 1
        type:   V4L2_INPUT_TYPE_CAMERA
...