dailz
3e60258627
WebRTC client bandwidth estimate now drives both encoder bitrate and resolution tier selection, replacing the previous static-target encoder. - webrtc.rs: enable str0m BWE (seeded at 5 Mbps), surface EgressBitrateEstimate + KeyframeRequest events, expose get_bwe_estimate() / set_need_keyframe() - state_portal.rs: wire bitrate/resolution channels between the WebRTC thread and the encode thread; tier ladder [1440p, 1080p, 720p] with downscale at 60% budget and upscale hysteresis (120% sustained 10s) - avhw.rs: SwEncImport::poll_resolution_commands() rebuilds the import filter graph on UpdateResolution; SwEncEncode::recreate_encoder() rebuilds sws/enc_video/yuv_frame atomically; hash_sampled_y_plane() skips duplicate frames; VBV x264opts cap IDR bursts; H.264 level 4.0 (muxer) / 4.2 (WebRTC) - state.rs: sync wlr-screencopy GOP to fps*2 max 20 for parity - fix: drain bitrate_rx + resolution_rx BEFORE the stride check in encode_cpu_frame() so the new (smaller-stride) frame produced after a resolution change does not hit the stale (larger) enc_width and crash the encode thread - WebRTC GOP widened to fps*2 max 20 (was fps/2 max 10)
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
- Arch:
- Wayland dev libraries:
- Arch:
pacman -S wayland-protocols - Ubuntu/Debian:
apt install libwayland-dev wayland-protocols - Fedora:
dnf install wayland-devel wayland-protocols-devel
- Arch:
- DRM dev libraries:
- Arch:
pacman -S libdrm - Ubuntu/Debian:
apt install libdrm-dev - Fedora:
dnf install libdrm-devel
- Arch:
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) |