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dailz 74f4dc826d perf(portal): achieve 58-60fps PipeWire screen capture

- Force PipeWire quantum=512 via NODE_FORCE_QUANTUM (48000/512=93Hz scheduling)
- Switch to libx264 ultrafast/zerolatency with 6 threads
- Use two-phase poll_and_encode: blocking recv_timeout for first frame,
  non-blocking try_recv drain for subsequent frames
- Remove fps_limit from portal path (PW already rate-limits via quantum/KWin;
  fps_limit's min_interval was silently dropping ~10% of valid frames)
- Remove diagnostic instrumentation (TIMING/PIPEWIRE logs, timing fields,
  pw_stats counters)
- Add lightweight production stats: per-10s fps log + shutdown summary
- Prefer libx264 over libopenh264 (better quality at same speed)

2026-05-30 08:44:15 +08:00

.sisyphus/evidence

chore: add .sisyphus/ to .gitignore, remove committed BUGS.md

2026-05-25 08:56:21 +08:00

docs/superpowers

fix: resolve 4 audit bugs (PTS, WlOutput, first_frame, DRM minor)

2026-04-06 16:25:02 +08:00

examples

fix(backend_detect): use raw zbus for portal check to avoid OnceLock connection poisoning

2026-05-27 22:07:11 +08:00

src

perf(portal): achieve 58-60fps PipeWire screen capture

2026-05-30 08:44:15 +08:00

tests

feat: add KWin/KDE Plasma screen capture via xdg-desktop-portal ScreenCast + PipeWire

2026-05-11 08:49:08 +08:00

.gitignore

chore: add .sisyphus/ to .gitignore, remove committed BUGS.md

2026-05-25 08:56:21 +08:00

analysis.md

feat: Phase 1 MVP with audit fixes — Wayland screen capture + VAAPI encoding

2026-04-05 23:35:00 +08:00

build.rs

feat: Phase 1 MVP with audit fixes — Wayland screen capture + VAAPI encoding

2026-04-05 23:35:00 +08:00

Cargo.lock

fix(backend_detect): use raw zbus for portal check to avoid OnceLock connection poisoning

2026-05-27 22:07:11 +08:00

Cargo.toml

perf(portal): achieve 58-60fps PipeWire screen capture

2026-05-30 08:44:15 +08:00

README.md

feat: Phase 1 MVP with audit fixes — Wayland screen capture + VAAPI encoding

2026-04-05 23:35:00 +08:00

shell.nix

feat: Phase 1 MVP with audit fixes — Wayland screen capture + VAAPI encoding

2026-04-05 23:35:00 +08:00

README.md

wl-webrtc

Wayland screen capture and encoding tool.

Prerequisites

Rust toolchain (1.70+): rustup default stable
FFmpeg 6.0+ dev libraries with VAAPI support:
- Arch: pacman -S ffmpeg
- Ubuntu/Debian: apt install libavcodec-dev libavformat-dev libavutil-dev libswscale-dev libva-dev
- Fedora: dnf install ffmpeg-devel libva-devel
Wayland dev libraries:
- Arch: pacman -S wayland-protocols
- Ubuntu/Debian: apt install libwayland-dev wayland-protocols
- Fedora: dnf install wayland-devel wayland-protocols-devel
DRM dev libraries:
- Arch: pacman -S libdrm
- Ubuntu/Debian: apt install libdrm-dev
- Fedora: dnf install libdrm-devel

Build

cargo build --release

Run

# Basic capture to file
wl-webrtc --output output.mp4

# With custom FPS and bitrate
wl-webrtc --output output.mp4 --fps 60 --bitrate 8000000

# Specify DRM device for hardware encoding
wl-webrtc --output output.mp4 --drm-device /dev/dri/renderD128

# Verbose mode
wl-webrtc --output output.mp4 -v

CLI Arguments

Argument	Default	Description
`-o`, `--output`	(required)	Output file path (e.g., output.mp4)
`--output-name`	auto	Wayland output name to capture
`--fps`	30	Target frames per second
`--codec`	h264	Video codec (h264 only for MVP)
`--hw-accel`	vaapi	Hardware acceleration method
`--drm-device`	auto	DRM render device path
`--bitrate`	auto	Target bitrate in bps
`--gop-size`	auto	Group of Pictures size
`-v`, `--verbose`	false	Enable verbose logging
`--port`	0	WebTransport server port (unused in MVP)