⚠️ This is a downstream fork, not the upstream project

Upstream is CapSoftware/scap — all credit for this library belongs there. It is MIT licensed, © Cap Software, Inc., and that license and copyright are preserved here unchanged.

This copy is maintained by Luminous Dynamics for use by xenia-peer. It exists because the Linux PipeWire engine did not compile against the current two-level Frame::Video(VideoFrame::…) enum, and because that engine's internal frame channel was unbounded — under any downstream backpressure it grew without limit (~1.44 GB of 1.47 GB leaked in a 25.76 s heaptrack repro).

Both fixes are offered upstream in CapSoftware/scap#183. We are not trying to compete with or replace upstream, and we would rather these changes land there than live here.

Downstream maintenance policy

This is a deliberately maintained downstream, not an abandoned fork:

• Consumers pin an exact revision, never this branch — a mutable pin is not a pin.
• Changes here stay minimal and are upstreamed first; we do not diverge casually.
• We track upstream and re-sync when it moves. As of this writing upstream main last moved 2025-08-05, which is why the fork exists at all rather than us simply waiting for a release.

If you are looking for the real scap, use upstream. If you only need the Linux fixes above, prefer PR #183 landing over depending on this repository.

A Rust library for high-quality screen capture that leverages native OS APIs for optimal performance!

1. macOS: ScreenCaptureKit
2. Windows: Windows.Graphics.Capture
3. Linux: Pipewire

---

Features

1. Cross-platform across Windows, Mac and Linux!
2. Checks for support and recording permissions.
3. Query list of captureable targets (displays and windows).
4. Exclude certain targets from being captured.

Contributing

We found most of Rust's tooling around screen capture either very outdated, non-performant or platform-specific. This project is our attempt to change that. Contributions, PRs and Issues are most welcome!

If you want to contribute code, here's a quick primer:

1. Clone the repo and run it with cargo run.
2. Explore the API and library code in lib.rs.
3. Platform-specific code lives in the win, mac and linux modules.
4. The main.rs is a small program that "consumes" the library, for easy testing.

Usage

use scap::{
    capturer::{Point, Area, Size, Capturer, Options},
    frame::Frame,
};

fn main() {
    // Check if the platform is supported
    if !scap::is_supported() {
        println!("❌ Platform not supported");
        return;
    }

    // Check if we have permission to capture screen
    // If we don't, request it.
    if !scap::has_permission() {
        println!("❌ Permission not granted. Requesting permission...");
        if !scap::request_permission() {
            println!("❌ Permission denied");
            return;
        }
    }

    // Get recording targets
    let targets = scap::get_all_targets();
    println!("Targets: {:?}", targets);

    // All your displays and windows are targets
    // You can filter this and capture the one you need.

    // Create Options
    let options = Options {
        fps: 60,
        target: None, // None captures the primary display
        show_cursor: true,
        show_highlight: true,
        excluded_targets: None,
        output_type: scap::frame::FrameType::BGRAFrame,
        output_resolution: scap::capturer::Resolution::_720p,
        crop_area: Some(Area {
            origin: Point { x: 0.0, y: 0.0 },
            size: Size {
                width: 2000.0,
                height: 1000.0,
            },
        }),
        ..Default::default()
    };

    // Create Capturer
    let mut capturer = Capturer::build(options).unwrap();

    // Start Capture
    capturer.start_capture();

    let mut input = String::new();
    std::io::stdin().read_line(&mut input).unwrap();

    // Stop Capture
    capturer.stop_capture();
}

License

The code in this repository is open-sourced under the MIT license, though it may be relying on dependencies that are licensed differently. Please consult their documentation for exact terms.

Contributors

Pranav Joglekar 💻

Siddharth 💻

Rohan Punjani 💻

NiiightmareXD 💻

MAlba124 💻

Anubhav Singhal 💻

Vasu Sharma 💻

Credits

This project builds on top of the fabulous work done by:

• @MAlba124 for Linux support via Pipewire
• @svtlabs for screencapturekit-rs
• @NiiightmareXD for windows-capture