Struct cv::videoio::VideoCapture

pub struct VideoCapture { /* fields omitted */ }

Video capturing from video files, image sequences or cameras.

Implementations

impl VideoCapture

pub fn new(index: c_int) -> Self

Creates a capture device with specified camera id. If there is a single camera connected, just pass 0.

pub fn from_path(path: &str) -> Self

Creates a capture device with the path of a video file (eg. video.avi). This also supports image sequence, eg. img_%02d.jpg, which will read samples like img_00.jpg, img_01.jpg, img_02.jpg, …).

pub fn from_pipeline(pipeline: &str) -> Self

Create a capture device from a gstreamer pipeline (eg. gst-launch-1.0 v4l2src ! videoconvert ! appsink).

pub fn is_open(&self) -> bool

Returns true if video capturing has been initialized already.

pub fn read(&self) -> Option<Mat>

Grabs, decodes and returns the next video frame. read combines VideoCapture::grab and VideoCapture::retrieve in one call. This is the most convenient method for reading video files or capturing data from decode and return the just grabbed frame.

If no frames has been grabbed (camera has been disconnected, or there are no more frames in video file), the methods return None.

pub fn set(&self, property: CapProp, value: f64) -> bool

Sets a property in the VideoCapture.

pub fn get(&self, property: CapProp) -> Option<f64>

Gets a property in the VideoCapture.

Trait Implementations

impl Debug for VideoCapture

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Drop for VideoCapture

fn drop(&mut self)

Executes the destructor for this type.

impl Send for VideoCapture