Windows Capture is a highly efficient Rust and Python library that enables you to capture the screen using the Graphics Capture API effortlessly. This library allows you to easily capture the screen of your Windows-based computer and use it for various purposes, such as creating instructional videos, taking screenshots, or recording your gameplay. With its intuitive interface and robust functionality, Windows Capture is an excellent choice for anyone looking for a reliable, easy-to-use screen-capturing solution.
Note this README.md is for Rust library Python library can be found here
- Only Updates The Frame When Required.
- High Performance.
- Easy To Use.
- Latest Screen Capturing API.
Add this library to your Cargo.toml
:
[dependencies]
windows-capture = "1.1.9"
or run this command
cargo add windows-capture
use std::{
io::{self, Write},
time::Instant,
};
use windows_capture::{
capture::GraphicsCaptureApiHandler,
encoder::{VideoEncoder, VideoEncoderQuality, VideoEncoderType},
frame::Frame,
graphics_capture_api::InternalCaptureControl,
monitor::Monitor,
settings::{ColorFormat, CursorCaptureSettings, DrawBorderSettings, Settings},
};
// This struct will be used to handle the capture events.
struct Capture {
// The video encoder that will be used to encode the frames.
encoder: Option<VideoEncoder>,
// To measure the time the capture has been running
start: Instant,
}
impl GraphicsCaptureApiHandler for Capture {
// The type of flags used to get the values from the settings.
type Flags = String;
// The type of error that can occur during capture, the error will be returned from `CaptureControl` and `start` functions.
type Error = Box<dyn std::error::Error + Send + Sync>;
// Function that will be called to create the struct. The flags can be passed from settings.
fn new(message: Self::Flags) -> Result<Self, Self::Error> {
println!("Got The Flag: {message}");
let encoder = VideoEncoder::new(
VideoEncoderType::Mp4,
VideoEncoderQuality::HD1080p,
1920,
1080,
"video.mp4",
)?;
Ok(Self {
encoder: Some(encoder),
start: Instant::now(),
})
}
// Called every time a new frame is available.
fn on_frame_arrived(
&mut self,
frame: &mut Frame,
capture_control: InternalCaptureControl,
) -> Result<(), Self::Error> {
print!(
"\rRecording for: {} seconds",
self.start.elapsed().as_secs()
);
io::stdout().flush()?;
// Send the frame to the video encoder
self.encoder.as_mut().unwrap().send_frame(frame)?;
// Note: The frame has other uses too for example you can save a single for to a file like this:
// frame.save_as_image("frame.png", ImageFormat::Png)?;
// Or get the raw data like this so you have full control:
// let data = frame.buffer()?;
// Stop the capture after 6 seconds
if self.start.elapsed().as_secs() >= 6 {
// Finish the encoder and save the video.
self.encoder.take().unwrap().finish()?;
capture_control.stop();
// Because there wasn't any new lines in previous prints
println!();
}
Ok(())
}
// Optional handler called when the capture item (usually a window) closes.
fn on_closed(&mut self) -> Result<(), Self::Error> {
println!("Capture Session Closed");
Ok(())
}
}
fn main() {
// Gets The Foreground Window, Checkout The Docs For Other Capture Items
let primary_monitor = Monitor::primary().expect("There is no primary monitor");
let settings = Settings::new(
// Item To Captue
primary_monitor,
// Capture Cursor Settings
CursorCaptureSettings::Default,
// Draw Borders Settings
DrawBorderSettings::Default,
// The desired color format for the captured frame.
ColorFormat::Rgba8,
// Additional flags for the capture settings that will be passed to user defined `new` function.
"Yea This Works".to_string(),
);
// Starts the capture and takes control of the current thread.
// The errors from handler trait will end up here
Capture::start(settings).expect("Screen Capture Failed");
}
Detailed documentation for each API and type can be found here.
Contributions are welcome! If you find a bug or want to add new features to the library, please open an issue or submit a pull request.
This project is licensed under the MIT License.