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··· 1 + WEBSITE_URL=https://example.com 2 + 3 + # Option A: full output URL 4 + OUTPUT=rtmp://live.example.com/app/mystream 5 + 6 + # Option B: split URL + key (used when OUTPUT is empty) 7 + RTMP_URL=rtmp://live.example.com/app 8 + STREAM_KEY=mystream 9 + 10 + WIDTH=1920 11 + HEIGHT=1080 12 + FPS=30 13 + BITRATE_KBPS=4500 14 + KEYINT_SEC=1 15 + X264_OPTS=bframes=0 16 + RETRIES=5 17 + RETRY_BACKOFF_MS=1000 18 + STARTUP_DELAY_MS=2000 19 + FRAME_TIMEOUT_MS=30000 20 + NO_AUDIO=0 21 + VERBOSE=0

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··· 1 + name: Build and Release 2 + 3 + on: 4 + pull_request: 5 + push: 6 + branches: 7 + - main 8 + tags: 9 + - "v*" 10 + workflow_dispatch: 11 + 12 + permissions: 13 + contents: write 14 + 15 + jobs: 16 + build: 17 + name: ${{ matrix.name }} 18 + runs-on: ${{ matrix.os }} 19 + strategy: 20 + fail-fast: false 21 + matrix: 22 + include: 23 + - name: macOS arm64 24 + os: macos-14 25 + target: aarch64-apple-darwin 26 + artifact_id: macos-arm64 27 + archive_ext: tar.gz 28 + bin_name: browser-stream 29 + - name: Linux x86_64 30 + os: ubuntu-24.04 31 + target: x86_64-unknown-linux-gnu 32 + artifact_id: linux-x86_64 33 + archive_ext: tar.gz 34 + bin_name: browser-stream 35 + - name: Windows x86_64 36 + os: windows-2022 37 + target: x86_64-pc-windows-msvc 38 + artifact_id: windows-x86_64 39 + archive_ext: zip 40 + bin_name: browser-stream.exe 41 + 42 + steps: 43 + - name: Checkout 44 + uses: actions/checkout@v4 45 + 46 + - name: Setup Rust 47 + uses: dtolnay/rust-toolchain@stable 48 + with: 49 + targets: ${{ matrix.target }} 50 + 51 + - name: Build release binary 52 + run: cargo build --release --target ${{ matrix.target }} 53 + 54 + - name: Install sidecar tooling (Linux) 55 + if: runner.os == 'Linux' 56 + run: | 57 + sudo apt-get update 58 + sudo apt-get install -y jq unzip 59 + 60 + - name: Install sidecar tooling (macOS) 61 + if: runner.os == 'macOS' 62 + run: brew install jq unzip 63 + 64 + - name: Fetch sidecars (macOS/Linux) 65 + if: runner.os != 'Windows' 66 + run: ./scripts/fetch-sidecars.sh --destination dist/sidecar 67 + 68 + - name: Fetch sidecars (Windows) 69 + if: runner.os == 'Windows' 70 + shell: pwsh 71 + run: ./scripts/fetch-sidecars.ps1 -Destination dist/sidecar 72 + 73 + - name: Package archive (macOS/Linux) 74 + if: runner.os != 'Windows' 75 + run: | 76 + set -euo pipefail 77 + ARCHIVE_ROOT="browser-stream-${{ matrix.artifact_id }}" 78 + PACKAGE_ROOT="dist/${ARCHIVE_ROOT}" 79 + 80 + mkdir -p "$PACKAGE_ROOT/bin" "$PACKAGE_ROOT/sidecar" 81 + cp "target/${{ matrix.target }}/release/${{ matrix.bin_name }}" "$PACKAGE_ROOT/bin/${{ matrix.bin_name }}" 82 + cp -R dist/sidecar/. "$PACKAGE_ROOT/sidecar/" 83 + 84 + tar -czf "dist/${ARCHIVE_ROOT}.tar.gz" -C dist "${ARCHIVE_ROOT}" 85 + 86 + - name: Package archive (Windows) 87 + if: runner.os == 'Windows' 88 + shell: pwsh 89 + run: | 90 + $archiveRoot = "browser-stream-${{ matrix.artifact_id }}" 91 + $packageRoot = "dist/$archiveRoot" 92 + 93 + New-Item -ItemType Directory -Force -Path "$packageRoot/bin" | Out-Null 94 + Copy-Item "target/${{ matrix.target }}/release/${{ matrix.bin_name }}" "$packageRoot/bin/${{ matrix.bin_name }}" -Force 95 + Copy-Item "dist/sidecar" "$packageRoot/sidecar" -Recurse -Force 96 + 97 + Compress-Archive -Path $packageRoot -DestinationPath "dist/$archiveRoot.zip" -Force 98 + 99 + - name: Upload workflow artifact 100 + uses: actions/upload-artifact@v4 101 + with: 102 + name: browser-stream-${{ matrix.artifact_id }} 103 + path: dist/browser-stream-${{ matrix.artifact_id }}.${{ matrix.archive_ext }} 104 + 105 + - name: Publish release asset 106 + if: startsWith(github.ref, 'refs/tags/') 107 + uses: softprops/action-gh-release@v2 108 + with: 109 + files: dist/browser-stream-${{ matrix.artifact_id }}.${{ matrix.archive_ext }}

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.github/workflows/docker-publish.yml

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··· 1 + name: Docker Publish 2 + 3 + on: 4 + pull_request: 5 + push: 6 + branches: 7 + - main 8 + tags: 9 + - "v*" 10 + workflow_dispatch: 11 + 12 + permissions: 13 + contents: read 14 + packages: write 15 + 16 + jobs: 17 + docker: 18 + name: Build and Publish GHCR Image (${{ matrix.variant }}) 19 + runs-on: ubuntu-latest 20 + strategy: 21 + fail-fast: false 22 + matrix: 23 + include: 24 + - variant: slim 25 + target: slim 26 + platforms: linux/amd64,linux/arm64 27 + - variant: full 28 + target: full 29 + platforms: linux/amd64 30 + 31 + steps: 32 + - name: Checkout 33 + uses: actions/checkout@v4 34 + 35 + - name: Set up QEMU 36 + uses: docker/setup-qemu-action@v3 37 + 38 + - name: Set up Docker Buildx 39 + uses: docker/setup-buildx-action@v3 40 + 41 + - name: Log in to GHCR 42 + if: github.event_name != 'pull_request' 43 + uses: docker/login-action@v3 44 + with: 45 + registry: ghcr.io 46 + username: ${{ github.actor }} 47 + password: ${{ secrets.GITHUB_TOKEN }} 48 + 49 + - name: Generate Docker metadata 50 + id: meta 51 + uses: docker/metadata-action@v5 52 + with: 53 + images: ghcr.io/${{ github.repository }} 54 + tags: | 55 + type=ref,event=branch,suffix=-${{ matrix.variant }} 56 + type=ref,event=tag,suffix=-${{ matrix.variant }} 57 + type=sha,prefix=sha-,suffix=-${{ matrix.variant }} 58 + type=raw,value=latest-${{ matrix.variant }},enable={{is_default_branch}} 59 + 60 + - name: Build and push 61 + uses: docker/build-push-action@v6 62 + with: 63 + context: . 64 + file: Dockerfile 65 + target: ${{ matrix.target }} 66 + platforms: ${{ matrix.platforms }} 67 + push: ${{ github.event_name != 'pull_request' }} 68 + tags: ${{ steps.meta.outputs.tags }} 69 + labels: ${{ steps.meta.outputs.labels }} 70 + cache-from: type=gha 71 + cache-to: type=gha,mode=max

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+21

Cargo.toml

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··· 1 + [package] 2 + name = "browser-stream" 3 + version = "0.1.0" 4 + edition = "2024" 5 + 6 + [dependencies] 7 + anyhow = "1.0" 8 + base64 = "0.22" 9 + clap = { version = "4.5", features = ["derive"] } 10 + chromiumoxide = "0.8" 11 + chromiumoxide_cdp = "0.8" 12 + futures = "0.3" 13 + image = { version = "0.25", default-features = true, features = ["jpeg", "png"] } 14 + thiserror = "2.0" 15 + tokio = { version = "1.47", features = ["full"] } 16 + tracing = "0.1" 17 + tracing-subscriber = { version = "0.3", features = ["env-filter", "fmt"] } 18 + url = "2.5" 19 + 20 + [dev-dependencies] 21 + assert_matches = "1.5"

+113

Dockerfile

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··· 1 + FROM rust:1.89-bookworm AS builder 2 + WORKDIR /app 3 + 4 + COPY Cargo.toml Cargo.lock ./ 5 + COPY src ./src 6 + 7 + RUN cargo build --release 8 + 9 + FROM debian:bookworm-slim AS sidecar-fetch 10 + ARG TARGETARCH 11 + 12 + RUN arch="${TARGETARCH:-amd64}" \ 13 + && test "${arch}" = "amd64" || (echo "full image sidecars currently support linux/amd64 only" >&2 && exit 1) 14 + 15 + RUN apt-get update \ 16 + && apt-get install -y --no-install-recommends \ 17 + ca-certificates \ 18 + curl \ 19 + jq \ 20 + unzip \ 21 + && rm -rf /var/lib/apt/lists/* 22 + 23 + RUN set -euo pipefail; \ 24 + mkdir -p /out/sidecar/chromium /out/sidecar/ffmpeg; \ 25 + chromium_manifest_url="https://googlechromelabs.github.io/chrome-for-testing/last-known-good-versions-with-downloads.json"; \ 26 + chromium_url="$(curl -fsSL "${chromium_manifest_url}" | jq -r '.channels.Stable.downloads["chrome-headless-shell"][] | select(.platform == "linux64") | .url')"; \ 27 + test -n "${chromium_url}" && test "${chromium_url}" != "null"; \ 28 + curl -fL "${chromium_url}" -o /tmp/chromium.zip; \ 29 + unzip -q /tmp/chromium.zip -d /tmp/chromium; \ 30 + chromium_source="$(find /tmp/chromium -type f -name chrome-headless-shell | head -n 1)"; \ 31 + test -n "${chromium_source}"; \ 32 + chromium_root="$(dirname "${chromium_source}")"; \ 33 + cp -R "${chromium_root}"/. /out/sidecar/chromium/; \ 34 + cp "${chromium_source}" /out/sidecar/chromium/headless_shell; \ 35 + chmod +x /out/sidecar/chromium/headless_shell; \ 36 + ffmpeg_url="https://ffmpeg.martin-riedl.de/redirect/latest/linux/amd64/release/ffmpeg.zip"; \ 37 + curl -fL "${ffmpeg_url}" -o /tmp/ffmpeg.zip; \ 38 + unzip -q /tmp/ffmpeg.zip -d /tmp/ffmpeg; \ 39 + ffmpeg_source="$(find /tmp/ffmpeg -type f -name ffmpeg | head -n 1)"; \ 40 + test -n "${ffmpeg_source}"; \ 41 + cp "${ffmpeg_source}" /out/sidecar/ffmpeg/ffmpeg; \ 42 + chmod +x /out/sidecar/ffmpeg/ffmpeg 43 + 44 + FROM debian:bookworm-slim AS runtime-base 45 + WORKDIR /app 46 + 47 + RUN apt-get update \ 48 + && apt-get install -y --no-install-recommends \ 49 + ca-certificates \ 50 + fonts-liberation \ 51 + libasound2 \ 52 + libatk-bridge2.0-0 \ 53 + libatk1.0-0 \ 54 + libc6 \ 55 + libcairo2 \ 56 + libcups2 \ 57 + libdbus-1-3 \ 58 + libdrm2 \ 59 + libexpat1 \ 60 + libgbm1 \ 61 + libglib2.0-0 \ 62 + libgtk-3-0 \ 63 + libnspr4 \ 64 + libnss3 \ 65 + libpango-1.0-0 \ 66 + libu2f-udev \ 67 + libx11-6 \ 68 + libx11-xcb1 \ 69 + libxcb1 \ 70 + libxcomposite1 \ 71 + libxcursor1 \ 72 + libxdamage1 \ 73 + libxext6 \ 74 + libxfixes3 \ 75 + libxi6 \ 76 + libxkbcommon0 \ 77 + libxrandr2 \ 78 + libxrender1 \ 79 + libxshmfence1 \ 80 + xdg-utils \ 81 + && rm -rf /var/lib/apt/lists/* 82 + 83 + COPY --from=builder /app/target/release/browser-stream /usr/local/bin/browser-stream 84 + COPY docker/entrypoint.sh /usr/local/bin/entrypoint.sh 85 + RUN chmod +x /usr/local/bin/entrypoint.sh 86 + 87 + RUN groupadd --system browserstream \ 88 + && useradd --system --gid browserstream --create-home --home-dir /home/browserstream browserstream 89 + 90 + ENV RUST_LOG=info 91 + ENV BROWSER_STREAM_NO_SANDBOX=1 92 + 93 + ENTRYPOINT ["/usr/local/bin/entrypoint.sh"] 94 + 95 + FROM runtime-base AS full 96 + COPY --from=sidecar-fetch /out/sidecar /opt/sidecar 97 + RUN chown -R browserstream:browserstream /opt/sidecar 98 + 99 + ENV BROWSER_STREAM_CHROMIUM_PATH=/opt/sidecar/chromium/headless_shell 100 + ENV BROWSER_STREAM_FFMPEG_PATH=/opt/sidecar/ffmpeg/ffmpeg 101 + 102 + USER browserstream 103 + 104 + FROM runtime-base AS slim 105 + RUN apt-get update \ 106 + && apt-get install -y --no-install-recommends \ 107 + chromium \ 108 + ffmpeg \ 109 + && rm -rf /var/lib/apt/lists/* 110 + 111 + USER browserstream 112 + 113 + FROM slim AS default

+177

README.md

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··· 1 + # browser-stream 2 + 3 + Rust CLI to stream a fullscreen browser-rendered website to RTMP/RTMPS using bundled Chromium Headless Shell and FFmpeg sidecars. 4 + 5 + ## Expected sidecar layout 6 + 7 + The binary resolves sidecars relative to itself: 8 + 9 + - `../sidecar/chromium/headless_shell` (`headless_shell.exe` on Windows) 10 + - `../sidecar/ffmpeg/ffmpeg` (`ffmpeg.exe` on Windows) 11 + 12 + You can override both paths with CLI flags: 13 + 14 + - `--chromium-path /abs/path/to/headless_shell` 15 + - `--ffmpeg-path /abs/path/to/ffmpeg` 16 + 17 + ## Local Sidecar Setup 18 + 19 + When running with `cargo run`, the executable lives under `target/`, so sidecars are expected under `target/sidecar`. 20 + 21 + Fetch sidecars for your host platform: 22 + 23 + ```bash 24 + ./scripts/fetch-sidecars.sh 25 + ``` 26 + 27 + Windows (PowerShell): 28 + 29 + ```powershell 30 + ./scripts/fetch-sidecars.ps1 31 + ``` 32 + 33 + ## Usage 34 + 35 + ```bash 36 + cargo run -- \ 37 + --url https://example.com \ 38 + --width 1920 \ 39 + --height 1080 \ 40 + --fps 30 \ 41 + --bitrate-kbps 4500 \ 42 + --keyint-sec 1 \ 43 + --x264-opts bframes=0 \ 44 + --rtmp-url rtmp://live.example.com/app \ 45 + --stream-key mystream 46 + ``` 47 + 48 + Equivalent full-output form: 49 + 50 + ```bash 51 + cargo run -- \ 52 + --url https://example.com \ 53 + --output rtmp://live.example.com/app/mystream 54 + ``` 55 + 56 + ## Docker Compose 57 + 58 + `docker-compose.yml` defines two image variants: 59 + 60 + - `slim` (default service `browser-stream`): uses system `chromium` + `ffmpeg` packages in the container. 61 + - `full` (service `browser-stream-full`): bundles sidecar binaries in image at `/opt/sidecar/...`. 62 + 63 + Build and run `slim` (default): 64 + 65 + ```bash 66 + docker compose up --build 67 + ``` 68 + 69 + Build and run `full`: 70 + 71 + ```bash 72 + docker compose --profile full up --build browser-stream-full 73 + ``` 74 + 75 + Or build directly with Docker targets: 76 + 77 + ```bash 78 + docker build --target slim -t browser-stream:slim . 79 + docker build --target full -t browser-stream:full . 80 + ``` 81 + 82 + Configure with environment variables (for example in `.env`): 83 + 84 + ```bash 85 + WEBSITE_URL=https://example.com 86 + # Option A: full output URL 87 + OUTPUT=rtmp://live.example.com/app/mystream 88 + 89 + # Option B: split URL + key (used when OUTPUT is empty) 90 + RTMP_URL=rtmp://live.example.com/app 91 + STREAM_KEY=mystream 92 + 93 + WIDTH=1920 94 + HEIGHT=1080 95 + FPS=30 96 + BITRATE_KBPS=4500 97 + KEYINT_SEC=1 98 + X264_OPTS=bframes=0 99 + RETRIES=5 100 + RETRY_BACKOFF_MS=1000 101 + STARTUP_DELAY_MS=2000 102 + FRAME_TIMEOUT_MS=30000 103 + NO_AUDIO=0 104 + VERBOSE=0 105 + ``` 106 + 107 + Binary resolution in containers: 108 + 109 + - `slim`: auto-detects system `chromium`/`chromium-browser` and `ffmpeg`. 110 + - `full`: uses bundled sidecars via `BROWSER_STREAM_CHROMIUM_PATH` and `BROWSER_STREAM_FFMPEG_PATH`. 111 + 112 + No sidecar downloads are required for either image. 113 + Both images set `BROWSER_STREAM_NO_SANDBOX=1` for Chromium compatibility in containers. 114 + 115 + ## Defaults 116 + 117 + - `width=1920` 118 + - `height=1080` 119 + - `fps=30` 120 + - `bitrate-kbps=4500` 121 + - `keyint-sec=1` 122 + - `x264-opts=bframes=0` 123 + - `retries=5` 124 + - `retry-backoff-ms=1000` 125 + - `startup-delay-ms=2000` 126 + - `frame-timeout-ms=30000` 127 + - `no-audio=false` (silent audio track enabled by default) 128 + 129 + ## Notes 130 + 131 + - v1 supports public HTTP(S) website URLs. 132 + - A silent audio track is included by default for RTMP compatibility. 133 + - Use `--no-audio` to disable audio. 134 + - RTMP output supports `rtmp://` and `rtmps://`. 135 + - On stream failure, the app retries a fixed number of times and exits non-zero once exhausted. 136 + - Runtime controls while streaming: 137 + - type `r` or `refresh` then press Enter to manually reload the page. 138 + - type `h` or `help` then press Enter to print controls. 139 + - with compose, run foreground (`docker compose up`) to send commands directly via stdin. 140 + 141 + ## GitHub Release Bundling 142 + 143 + Workflow: `.github/workflows/build-and-release.yml` 144 + 145 + - Builds release binaries for: 146 + - macOS arm64 147 + - Linux x86_64 148 + - Windows x86_64 149 + - Downloads platform sidecars and packages archives in this layout: 150 + - `bin/browser-stream[.exe]` 151 + - `sidecar/chromium/headless_shell[.exe]` 152 + - `sidecar/ffmpeg/ffmpeg[.exe]` 153 + - Uploads build artifacts on PR/push. 154 + - Publishes release assets automatically on tags like `v0.1.0`. 155 + 156 + ## GHCR Docker Publish 157 + 158 + Workflow: `.github/workflows/docker-publish.yml` 159 + 160 + - Builds and publishes both Docker variants: 161 + - `slim`: `linux/amd64` and `linux/arm64` 162 + - `full`: `linux/amd64` (sidecar availability) 163 + - Publishes to GitHub Container Registry on push to `main` and version tags (`v*`). 164 + - Uses image name: 165 + - `ghcr.io/<owner>/<repo>` 166 + - Example for this repo: `ghcr.io/mmattbtw/browser-stream` 167 + - Tags include: 168 + - `latest-slim` / `latest-full` (default branch) 169 + - branch/tag refs with suffixes (`-slim`, `-full`) 170 + - `sha-<commit>-slim` / `sha-<commit>-full` 171 + 172 + Example: 173 + 174 + ```bash 175 + docker pull ghcr.io/mmattbtw/browser-stream:latest-slim 176 + docker pull ghcr.io/mmattbtw/browser-stream:latest-full 177 + ```

+42

docker-compose.yml

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··· 1 + x-browser-stream-env: &browser-stream-env 2 + WEBSITE_URL: ${WEBSITE_URL:-https://example.com} 3 + OUTPUT: ${OUTPUT:-} 4 + RTMP_URL: ${RTMP_URL:-rtmp://live.example.com/app} 5 + STREAM_KEY: ${STREAM_KEY:-changeme} 6 + WIDTH: ${WIDTH:-1920} 7 + HEIGHT: ${HEIGHT:-1080} 8 + FPS: ${FPS:-30} 9 + BITRATE_KBPS: ${BITRATE_KBPS:-4500} 10 + KEYINT_SEC: ${KEYINT_SEC:-1} 11 + X264_OPTS: ${X264_OPTS:-bframes=0} 12 + RETRIES: ${RETRIES:-5} 13 + RETRY_BACKOFF_MS: ${RETRY_BACKOFF_MS:-1000} 14 + STARTUP_DELAY_MS: ${STARTUP_DELAY_MS:-2000} 15 + FRAME_TIMEOUT_MS: ${FRAME_TIMEOUT_MS:-30000} 16 + NO_AUDIO: ${NO_AUDIO:-0} 17 + VERBOSE: ${VERBOSE:-0} 18 + 19 + x-browser-stream-common: &browser-stream-common 20 + restart: unless-stopped 21 + environment: *browser-stream-env 22 + stdin_open: true 23 + tty: true 24 + 25 + services: 26 + browser-stream: 27 + <<: *browser-stream-common 28 + build: 29 + context: . 30 + dockerfile: Dockerfile 31 + target: slim 32 + image: browser-stream:slim 33 + 34 + browser-stream-full: 35 + <<: *browser-stream-common 36 + build: 37 + context: . 38 + dockerfile: Dockerfile 39 + target: full 40 + image: browser-stream:full 41 + profiles: 42 + - full

+74

docker/entrypoint.sh

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··· 1 + #!/usr/bin/env bash 2 + set -euo pipefail 3 + 4 + if [[ -z "${WEBSITE_URL:-}" ]]; then 5 + echo "WEBSITE_URL is required" >&2 6 + exit 1 7 + fi 8 + 9 + if [[ -z "${OUTPUT:-}" && ( -z "${RTMP_URL:-}" || -z "${STREAM_KEY:-}" ) ]]; then 10 + echo "Provide either OUTPUT or both RTMP_URL and STREAM_KEY" >&2 11 + exit 1 12 + fi 13 + 14 + if [[ -n "${BROWSER_STREAM_CHROMIUM_PATH:-}" ]]; then 15 + CHROMIUM_BIN="${BROWSER_STREAM_CHROMIUM_PATH}" 16 + elif command -v chromium >/dev/null 2>&1; then 17 + CHROMIUM_BIN="$(command -v chromium)" 18 + elif command -v chromium-browser >/dev/null 2>&1; then 19 + CHROMIUM_BIN="$(command -v chromium-browser)" 20 + else 21 + echo "Could not find chromium binary in container" >&2 22 + exit 1 23 + fi 24 + 25 + if [[ ! -x "${CHROMIUM_BIN}" ]]; then 26 + echo "Configured chromium binary is not executable: ${CHROMIUM_BIN}" >&2 27 + exit 1 28 + fi 29 + 30 + if [[ -n "${BROWSER_STREAM_FFMPEG_PATH:-}" ]]; then 31 + FFMPEG_BIN="${BROWSER_STREAM_FFMPEG_PATH}" 32 + elif command -v ffmpeg >/dev/null 2>&1; then 33 + FFMPEG_BIN="$(command -v ffmpeg)" 34 + else 35 + echo "Could not find ffmpeg binary in container" >&2 36 + exit 1 37 + fi 38 + 39 + if [[ ! -x "${FFMPEG_BIN}" ]]; then 40 + echo "Configured ffmpeg binary is not executable: ${FFMPEG_BIN}" >&2 41 + exit 1 42 + fi 43 + 44 + args=( 45 + --url "${WEBSITE_URL}" 46 + --width "${WIDTH:-1920}" 47 + --height "${HEIGHT:-1080}" 48 + --fps "${FPS:-30}" 49 + --bitrate-kbps "${BITRATE_KBPS:-4500}" 50 + --keyint-sec "${KEYINT_SEC:-1}" 51 + --x264-opts "${X264_OPTS:-bframes=0}" 52 + --retries "${RETRIES:-5}" 53 + --retry-backoff-ms "${RETRY_BACKOFF_MS:-1000}" 54 + --startup-delay-ms "${STARTUP_DELAY_MS:-2000}" 55 + --frame-timeout-ms "${FRAME_TIMEOUT_MS:-30000}" 56 + --chromium-path "${CHROMIUM_BIN}" 57 + --ffmpeg-path "${FFMPEG_BIN}" 58 + ) 59 + 60 + if [[ -n "${OUTPUT:-}" ]]; then 61 + args+=(--output "${OUTPUT}") 62 + else 63 + args+=(--rtmp-url "${RTMP_URL}" --stream-key "${STREAM_KEY}") 64 + fi 65 + 66 + if [[ "${VERBOSE:-0}" == "1" || "${VERBOSE:-false}" == "true" ]]; then 67 + args+=(--verbose) 68 + fi 69 + 70 + if [[ "${NO_AUDIO:-0}" == "1" || "${NO_AUDIO:-false}" == "true" ]]; then 71 + args+=(--no-audio) 72 + fi 73 + 74 + exec /usr/local/bin/browser-stream "${args[@]}" "$@"

+60

scripts/fetch-sidecars.ps1

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··· 1 + param( 2 + [string]$Destination = "target/sidecar" 3 + ) 4 + 5 + $ErrorActionPreference = "Stop" 6 + 7 + Write-Host "Fetching Chromium headless shell and FFmpeg sidecars..." 8 + 9 + New-Item -ItemType Directory -Force -Path "$Destination/chromium" | Out-Null 10 + New-Item -ItemType Directory -Force -Path "$Destination/ffmpeg" | Out-Null 11 + 12 + $tmpRoot = Join-Path $env:TEMP ("browser-stream-sidecars-" + [guid]::NewGuid().ToString()) 13 + New-Item -ItemType Directory -Path $tmpRoot | Out-Null 14 + 15 + try { 16 + $manifestUrl = "https://googlechromelabs.github.io/chrome-for-testing/last-known-good-versions-with-downloads.json" 17 + $manifest = Invoke-RestMethod -Uri $manifestUrl 18 + 19 + $chromiumEntry = $manifest.channels.Stable.downloads.'chrome-headless-shell' | 20 + Where-Object { $_.platform -eq 'win64' } | 21 + Select-Object -First 1 22 + 23 + if (-not $chromiumEntry) { 24 + throw "Could not resolve chrome-headless-shell download URL for win64" 25 + } 26 + 27 + $chromiumZip = Join-Path $tmpRoot "chromium.zip" 28 + Invoke-WebRequest -Uri $chromiumEntry.url -OutFile $chromiumZip 29 + Expand-Archive -Path $chromiumZip -DestinationPath (Join-Path $tmpRoot "chromium") -Force 30 + 31 + $chromiumExe = Get-ChildItem -Path (Join-Path $tmpRoot "chromium") -Recurse -File -Filter "chrome-headless-shell.exe" | Select-Object -First 1 32 + if (-not $chromiumExe) { 33 + throw "Could not find chrome-headless-shell.exe in downloaded Chromium archive" 34 + } 35 + 36 + $chromiumRoot = $chromiumExe.Directory.FullName 37 + Copy-Item -Path (Join-Path $chromiumRoot '*') -Destination (Join-Path $Destination "chromium") -Recurse -Force 38 + Copy-Item -Path $chromiumExe.FullName -Destination (Join-Path $Destination "chromium/headless_shell.exe") -Force 39 + 40 + $ffmpegUrl = "https://www.gyan.dev/ffmpeg/builds/ffmpeg-release-essentials.zip" 41 + $ffmpegZip = Join-Path $tmpRoot "ffmpeg.zip" 42 + Invoke-WebRequest -Uri $ffmpegUrl -OutFile $ffmpegZip 43 + Expand-Archive -Path $ffmpegZip -DestinationPath (Join-Path $tmpRoot "ffmpeg") -Force 44 + 45 + $ffmpegExe = Get-ChildItem -Path (Join-Path $tmpRoot "ffmpeg") -Recurse -File -Filter "ffmpeg.exe" | Select-Object -First 1 46 + if (-not $ffmpegExe) { 47 + throw "Could not find ffmpeg.exe in downloaded FFmpeg archive" 48 + } 49 + 50 + Copy-Item -Path $ffmpegExe.FullName -Destination (Join-Path $Destination "ffmpeg/ffmpeg.exe") -Force 51 + 52 + Write-Host "Sidecars installed:" 53 + Write-Host " Chromium: $Destination/chromium/headless_shell.exe" 54 + Write-Host " FFmpeg: $Destination/ffmpeg/ffmpeg.exe" 55 + } 56 + finally { 57 + if (Test-Path $tmpRoot) { 58 + Remove-Item -Path $tmpRoot -Recurse -Force 59 + } 60 + }

+115

scripts/fetch-sidecars.sh

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··· 1 + #!/usr/bin/env bash 2 + set -euo pipefail 3 + 4 + DESTINATION="target/sidecar" 5 + 6 + while [[ $# -gt 0 ]]; do 7 + case "$1" in 8 + --destination) 9 + DESTINATION="$2" 10 + shift 2 11 + ;; 12 + -h|--help) 13 + cat <<'USAGE' 14 + Fetch bundled Chromium Headless Shell and FFmpeg sidecars for the current platform. 15 + 16 + Usage: 17 + ./scripts/fetch-sidecars.sh [--destination <dir>] 18 + 19 + Defaults: 20 + destination: target/sidecar 21 + USAGE 22 + exit 0 23 + ;; 24 + *) 25 + echo "Unknown argument: $1" >&2 26 + exit 1 27 + ;; 28 + esac 29 + done 30 + 31 + if ! command -v curl >/dev/null 2>&1; then 32 + echo "curl is required" >&2 33 + exit 1 34 + fi 35 + 36 + if ! command -v jq >/dev/null 2>&1; then 37 + echo "jq is required" >&2 38 + exit 1 39 + fi 40 + 41 + if ! command -v unzip >/dev/null 2>&1; then 42 + echo "unzip is required" >&2 43 + exit 1 44 + fi 45 + 46 + uname_s="$(uname -s)" 47 + uname_m="$(uname -m)" 48 + 49 + chromium_platform="" 50 + ffmpeg_url="" 51 + chromium_exec_name="chrome-headless-shell" 52 + ffmpeg_exec_name="ffmpeg" 53 + 54 + case "${uname_s}:${uname_m}" in 55 + Darwin:arm64) 56 + chromium_platform="mac-arm64" 57 + ffmpeg_url="https://ffmpeg.martin-riedl.de/redirect/latest/macos/arm64/release/ffmpeg.zip" 58 + ;; 59 + Linux:x86_64) 60 + chromium_platform="linux64" 61 + ffmpeg_url="https://ffmpeg.martin-riedl.de/redirect/latest/linux/amd64/release/ffmpeg.zip" 62 + ;; 63 + *) 64 + echo "Unsupported platform ${uname_s}/${uname_m}. This script supports macOS arm64 and Linux x86_64." >&2 65 + exit 1 66 + ;; 67 + esac 68 + 69 + chrome_manifest_url="https://googlechromelabs.github.io/chrome-for-testing/last-known-good-versions-with-downloads.json" 70 + chromium_url="$(curl -fsSL "$chrome_manifest_url" | jq -r --arg platform "$chromium_platform" '.channels.Stable.downloads["chrome-headless-shell"][] | select(.platform == $platform) | .url')" 71 + 72 + if [[ -z "$chromium_url" || "$chromium_url" == "null" ]]; then 73 + echo "Failed to resolve Chromium headless shell URL for platform ${chromium_platform}" >&2 74 + exit 1 75 + fi 76 + 77 + tmp_dir="$(mktemp -d)" 78 + trap 'rm -rf "$tmp_dir"' EXIT 79 + 80 + mkdir -p "$DESTINATION/chromium" "$DESTINATION/ffmpeg" 81 + 82 + chromium_zip="$tmp_dir/chromium.zip" 83 + ffmpeg_zip="$tmp_dir/ffmpeg.zip" 84 + 85 + printf 'Downloading Chromium headless shell (%s)\n' "$chromium_platform" 86 + curl -fL "$chromium_url" -o "$chromium_zip" 87 + unzip -q "$chromium_zip" -d "$tmp_dir/chromium" 88 + 89 + chromium_source="$(find "$tmp_dir/chromium" -type f -name "$chromium_exec_name" | head -n 1)" 90 + if [[ -z "$chromium_source" ]]; then 91 + echo "Could not find ${chromium_exec_name} inside Chromium archive" >&2 92 + exit 1 93 + fi 94 + 95 + chromium_root="$(dirname "$chromium_source")" 96 + cp -R "$chromium_root"/. "$DESTINATION/chromium/" 97 + cp "$chromium_source" "$DESTINATION/chromium/headless_shell" 98 + chmod +x "$DESTINATION/chromium/headless_shell" 99 + 100 + printf 'Downloading FFmpeg\n' 101 + curl -fL "$ffmpeg_url" -o "$ffmpeg_zip" 102 + unzip -q "$ffmpeg_zip" -d "$tmp_dir/ffmpeg" 103 + 104 + ffmpeg_source="$(find "$tmp_dir/ffmpeg" -type f -name "$ffmpeg_exec_name" | head -n 1)" 105 + if [[ -z "$ffmpeg_source" ]]; then 106 + echo "Could not find ${ffmpeg_exec_name} inside FFmpeg archive" >&2 107 + exit 1 108 + fi 109 + 110 + cp "$ffmpeg_source" "$DESTINATION/ffmpeg/ffmpeg" 111 + chmod +x "$DESTINATION/ffmpeg/ffmpeg" 112 + 113 + printf 'Sidecars installed:\n' 114 + printf ' Chromium: %s\n' "$DESTINATION/chromium/headless_shell" 115 + printf ' FFmpeg: %s\n' "$DESTINATION/ffmpeg/ffmpeg"

+289

src/chromium.rs

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··· 1 + use std::path::{Path, PathBuf}; 2 + use std::time::Duration; 3 + 4 + use anyhow::{Context, Result, anyhow}; 5 + use chromiumoxide::browser::{Browser, BrowserConfig}; 6 + use chromiumoxide::cdp::browser_protocol::page::{ 7 + EventScreencastFrame, ScreencastFrameAckParams, StartScreencastFormat, StartScreencastParams, 8 + StopScreencastParams, 9 + }; 10 + use chromiumoxide::handler::viewport::Viewport; 11 + use futures::StreamExt; 12 + use tokio::io::{AsyncBufReadExt, BufReader}; 13 + use tokio::sync::mpsc; 14 + use tokio::time::MissedTickBehavior; 15 + use tracing::{debug, error, info, warn}; 16 + 17 + use crate::cli::AppConfig; 18 + use crate::encoder::FfmpegEncoder; 19 + use crate::error::RuntimeError; 20 + use crate::frame::{RgbFrame, decode_screencast_frame}; 21 + 22 + pub async fn stream_browser_to_encoder( 23 + config: &AppConfig, 24 + chromium_path: &Path, 25 + encoder: &mut FfmpegEncoder, 26 + ) -> Result<()> { 27 + let viewport = Viewport { 28 + width: config.width, 29 + height: config.height, 30 + device_scale_factor: Some(1.0), 31 + emulating_mobile: false, 32 + is_landscape: config.width >= config.height, 33 + has_touch: false, 34 + }; 35 + 36 + let mut browser_builder = BrowserConfig::builder() 37 + .chrome_executable(chromium_path) 38 + .window_size(config.width, config.height) 39 + .new_headless_mode() 40 + .viewport(viewport) 41 + .arg("--autoplay-policy=no-user-gesture-required") 42 + .arg("--disable-background-timer-throttling") 43 + .arg("--disable-backgrounding-occluded-windows") 44 + .arg("--disable-renderer-backgrounding"); 45 + 46 + if no_sandbox_from_env() { 47 + browser_builder = browser_builder.no_sandbox(); 48 + } 49 + 50 + let browser_config = browser_builder 51 + .build() 52 + .map_err(|err| anyhow!("failed to build browser config: {err}"))?; 53 + 54 + info!(chromium = %chromium_path.display(), "starting chromium"); 55 + 56 + let (mut browser, mut handler) = Browser::launch(browser_config) 57 + .await 58 + .context("failed to launch chromium")?; 59 + 60 + let handler_task = tokio::spawn(async move { 61 + while let Some(item) = handler.next().await { 62 + if let Err(err) = item { 63 + error!("chromium handler error: {err}"); 64 + break; 65 + } 66 + } 67 + }); 68 + 69 + let page = browser 70 + .new_page("about:blank") 71 + .await 72 + .context("failed to create page")?; 73 + 74 + page.goto(config.website_url.as_str()) 75 + .await 76 + .with_context(|| format!("failed loading {}", config.website_url))?; 77 + 78 + // `goto` waits for page load completion. Delay further for dynamic JS/CSS settling. 79 + tokio::time::sleep(Duration::from_millis(config.startup_delay_ms)).await; 80 + 81 + let mut frame_events = page 82 + .event_listener::<EventScreencastFrame>() 83 + .await 84 + .context("failed to register screencast event listener")?; 85 + 86 + let start_params = StartScreencastParams::builder() 87 + .format(StartScreencastFormat::Jpeg) 88 + .quality(80_i64) 89 + .max_width(i64::from(config.width)) 90 + .max_height(i64::from(config.height)) 91 + .every_nth_frame(1_i64) 92 + .build(); 93 + 94 + page.execute(start_params) 95 + .await 96 + .context("failed to start screencast")?; 97 + 98 + info!("runtime controls: type `r` then Enter to refresh the page"); 99 + 100 + let mut control_rx = spawn_control_listener(); 101 + let frame_interval = Duration::from_secs_f64(1.0_f64 / f64::from(config.fps)); 102 + let mut frame_tick = tokio::time::interval(frame_interval); 103 + frame_tick.set_missed_tick_behavior(MissedTickBehavior::Skip); 104 + frame_tick.tick().await; 105 + let mut stats_tick = tokio::time::interval(Duration::from_secs(5)); 106 + stats_tick.set_missed_tick_behavior(MissedTickBehavior::Skip); 107 + stats_tick.tick().await; 108 + 109 + let first_frame_timeout = tokio::time::sleep(Duration::from_millis(config.frame_timeout_ms)); 110 + tokio::pin!(first_frame_timeout); 111 + let mut latest_frame: Option<RgbFrame> = None; 112 + let mut decoded_frames: u64 = 0; 113 + let mut encoded_frames: u64 = 0; 114 + 115 + let stream_result: Result<()> = async { 116 + loop { 117 + tokio::select! { 118 + biased; 119 + _ = frame_tick.tick() => { 120 + if let Some(frame) = latest_frame.as_ref() { 121 + encoder.write_frame(frame).await?; 122 + encoded_frames = encoded_frames.saturating_add(1); 123 + } 124 + } 125 + maybe_event = frame_events.next() => { 126 + let event = maybe_event.context("screencast event stream ended unexpectedly")?; 127 + 128 + page.execute(ScreencastFrameAckParams::new(event.session_id)) 129 + .await 130 + .context("failed to ack screencast frame")?; 131 + 132 + let frame = decode_screencast_frame(event.data.as_ref(), config.width, config.height) 133 + .context("failed to decode screencast frame")?; 134 + 135 + if latest_frame.is_none() { 136 + info!("received first screencast frame"); 137 + // Prime ffmpeg immediately so it can initialize output without waiting for the first tick. 138 + encoder.write_frame(&frame).await?; 139 + encoded_frames = encoded_frames.saturating_add(1); 140 + } 141 + decoded_frames = decoded_frames.saturating_add(1); 142 + latest_frame = Some(frame); 143 + } 144 + _ = stats_tick.tick() => { 145 + debug!( 146 + decoded_frames, 147 + encoded_frames, 148 + has_frame = latest_frame.is_some(), 149 + "streaming stats" 150 + ); 151 + } 152 + command = control_rx.recv() => { 153 + match command { 154 + Some(ControlCommand::Refresh) => { 155 + page.reload() 156 + .await 157 + .context("manual refresh failed")?; 158 + info!("manual refresh applied"); 159 + } 160 + Some(ControlCommand::Help) => { 161 + info!("runtime controls: `r` or `refresh` reloads the page"); 162 + } 163 + None => { 164 + // stdin closed; continue streaming without runtime controls. 165 + } 166 + } 167 + } 168 + _ = tokio::signal::ctrl_c() => { 169 + return Err(RuntimeError::ShutdownRequested.into()); 170 + } 171 + _ = &mut first_frame_timeout, if latest_frame.is_none() => { 172 + return Err(RuntimeError::ScreencastTimeout.into()); 173 + } 174 + } 175 + } 176 + } 177 + .await; 178 + 179 + if let Err(err) = page.execute(StopScreencastParams::default()).await { 180 + warn!("failed to stop screencast cleanly: {err}"); 181 + } 182 + 183 + if let Err(err) = browser.close().await { 184 + warn!("failed to close browser cleanly: {err}"); 185 + } 186 + if let Err(err) = browser.wait().await { 187 + warn!("failed to wait for browser process: {err}"); 188 + } 189 + 190 + handler_task.abort(); 191 + 192 + stream_result 193 + } 194 + 195 + fn no_sandbox_from_env() -> bool { 196 + match std::env::var("BROWSER_STREAM_NO_SANDBOX") { 197 + Ok(value) => parse_truthy(&value), 198 + Err(_) => false, 199 + } 200 + } 201 + 202 + fn parse_truthy(value: &str) -> bool { 203 + matches!( 204 + value.trim().to_ascii_lowercase().as_str(), 205 + "1" | "true" | "yes" 206 + ) 207 + } 208 + 209 + pub fn chromium_executable_name() -> &'static str { 210 + if cfg!(target_os = "windows") { 211 + "headless_shell.exe" 212 + } else { 213 + "headless_shell" 214 + } 215 + } 216 + 217 + pub fn default_chromium_sidecar_path(exe_dir: &Path) -> PathBuf { 218 + exe_dir 219 + .join("..") 220 + .join("sidecar") 221 + .join("chromium") 222 + .join(chromium_executable_name()) 223 + } 224 + 225 + #[derive(Debug, Copy, Clone)] 226 + enum ControlCommand { 227 + Refresh, 228 + Help, 229 + } 230 + 231 + fn parse_control_command(input: &str) -> Option<ControlCommand> { 232 + match input.trim().to_ascii_lowercase().as_str() { 233 + "r" | "refresh" => Some(ControlCommand::Refresh), 234 + "h" | "help" => Some(ControlCommand::Help), 235 + _ => None, 236 + } 237 + } 238 + 239 + fn spawn_control_listener() -> mpsc::UnboundedReceiver<ControlCommand> { 240 + let (tx, rx) = mpsc::unbounded_channel(); 241 + 242 + tokio::spawn(async move { 243 + let mut lines = BufReader::new(tokio::io::stdin()).lines(); 244 + while let Ok(Some(line)) = lines.next_line().await { 245 + if let Some(command) = parse_control_command(&line) { 246 + if tx.send(command).is_err() { 247 + break; 248 + } 249 + } 250 + } 251 + }); 252 + 253 + rx 254 + } 255 + 256 + #[cfg(test)] 257 + mod tests { 258 + use super::{ControlCommand, parse_control_command, parse_truthy}; 259 + 260 + #[test] 261 + fn parses_refresh_shortcut() { 262 + assert!(matches!( 263 + parse_control_command("r"), 264 + Some(ControlCommand::Refresh) 265 + )); 266 + } 267 + 268 + #[test] 269 + fn parses_refresh_word() { 270 + assert!(matches!( 271 + parse_control_command(" refresh "), 272 + Some(ControlCommand::Refresh) 273 + )); 274 + } 275 + 276 + #[test] 277 + fn ignores_unknown_commands() { 278 + assert!(parse_control_command("noop").is_none()); 279 + } 280 + 281 + #[test] 282 + fn truthy_parser() { 283 + assert!(parse_truthy("true")); 284 + assert!(parse_truthy("1")); 285 + assert!(parse_truthy("YES")); 286 + assert!(!parse_truthy("0")); 287 + assert!(!parse_truthy("false")); 288 + } 289 + }

+144

src/cli.rs

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··· 1 + use std::path::PathBuf; 2 + 3 + use clap::Parser; 4 + use url::Url; 5 + 6 + use crate::error::ConfigError; 7 + 8 + #[derive(Debug, Parser, Clone)] 9 + #[command( 10 + name = "browser-stream", 11 + version, 12 + about = "Stream a browser page to RTMP" 13 + )] 14 + pub struct CliArgs { 15 + #[arg(long)] 16 + pub url: String, 17 + 18 + #[arg(long, default_value_t = 1920)] 19 + pub width: u32, 20 + 21 + #[arg(long, default_value_t = 1080)] 22 + pub height: u32, 23 + 24 + #[arg(long, default_value_t = 30)] 25 + pub fps: u32, 26 + 27 + #[arg(long, default_value_t = 4500)] 28 + pub bitrate_kbps: u32, 29 + 30 + #[arg(long, default_value_t = 1)] 31 + pub keyint_sec: u32, 32 + 33 + #[arg(long, default_value = "bframes=0")] 34 + pub x264_opts: String, 35 + 36 + #[arg(long)] 37 + pub rtmp_url: Option<String>, 38 + 39 + #[arg(long)] 40 + pub stream_key: Option<String>, 41 + 42 + #[arg(long)] 43 + pub output: Option<String>, 44 + 45 + #[arg(long, default_value_t = 5)] 46 + pub retries: u32, 47 + 48 + #[arg(long, default_value_t = 1000)] 49 + pub retry_backoff_ms: u64, 50 + 51 + #[arg(long, default_value_t = 2000)] 52 + pub startup_delay_ms: u64, 53 + 54 + #[arg(long, default_value_t = 30000)] 55 + pub frame_timeout_ms: u64, 56 + 57 + #[arg(long, default_value_t = false)] 58 + pub no_audio: bool, 59 + 60 + #[arg(long)] 61 + pub ffmpeg_path: Option<PathBuf>, 62 + 63 + #[arg(long)] 64 + pub chromium_path: Option<PathBuf>, 65 + 66 + #[arg(long, default_value_t = false)] 67 + pub verbose: bool, 68 + } 69 + 70 + #[derive(Debug, Clone)] 71 + pub struct AppConfig { 72 + pub website_url: Url, 73 + pub width: u32, 74 + pub height: u32, 75 + pub fps: u32, 76 + pub bitrate_kbps: u32, 77 + pub keyint_sec: u32, 78 + pub x264_opts: String, 79 + pub output: String, 80 + pub retries: u32, 81 + pub retry_backoff_ms: u64, 82 + pub startup_delay_ms: u64, 83 + pub frame_timeout_ms: u64, 84 + pub no_audio: bool, 85 + pub ffmpeg_path: Option<PathBuf>, 86 + pub chromium_path: Option<PathBuf>, 87 + pub verbose: bool, 88 + } 89 + 90 + impl CliArgs { 91 + pub fn into_config(self) -> Result<AppConfig, ConfigError> { 92 + validate_range("width", self.width as u64, 16, u32::MAX as u64)?; 93 + validate_range("height", self.height as u64, 16, u32::MAX as u64)?; 94 + validate_range("fps", self.fps as u64, 1, 120)?; 95 + validate_range( 96 + "bitrate-kbps", 97 + self.bitrate_kbps as u64, 98 + 100, 99 + u32::MAX as u64, 100 + )?; 101 + validate_range("keyint-sec", self.keyint_sec as u64, 1, 60)?; 102 + validate_range("frame-timeout-ms", self.frame_timeout_ms, 1000, u64::MAX)?; 103 + 104 + let website_url = 105 + Url::parse(&self.url).map_err(|_| ConfigError::InvalidWebsiteUrl(self.url.clone()))?; 106 + match website_url.scheme() { 107 + "http" | "https" => {} 108 + other => return Err(ConfigError::UnsupportedWebsiteScheme(other.to_string())), 109 + } 110 + 111 + let output = crate::rtmp::build_output(self.output, self.rtmp_url, self.stream_key)?; 112 + 113 + Ok(AppConfig { 114 + website_url, 115 + width: self.width, 116 + height: self.height, 117 + fps: self.fps, 118 + bitrate_kbps: self.bitrate_kbps, 119 + keyint_sec: self.keyint_sec, 120 + x264_opts: self.x264_opts, 121 + output, 122 + retries: self.retries, 123 + retry_backoff_ms: self.retry_backoff_ms, 124 + startup_delay_ms: self.startup_delay_ms, 125 + frame_timeout_ms: self.frame_timeout_ms, 126 + no_audio: self.no_audio, 127 + ffmpeg_path: self.ffmpeg_path, 128 + chromium_path: self.chromium_path, 129 + verbose: self.verbose, 130 + }) 131 + } 132 + } 133 + 134 + fn validate_range(field: &'static str, actual: u64, min: u64, max: u64) -> Result<(), ConfigError> { 135 + if actual < min || actual > max { 136 + return Err(ConfigError::OutOfRange { 137 + field, 138 + min, 139 + max, 140 + actual, 141 + }); 142 + } 143 + Ok(()) 144 + }

+217

src/encoder.rs

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··· 1 + use std::path::{Path, PathBuf}; 2 + use std::process::ExitStatus; 3 + 4 + use anyhow::{Context, Result, bail}; 5 + use tokio::io::{AsyncBufReadExt, AsyncWriteExt, BufReader}; 6 + use tokio::process::{Child, ChildStdin, Command}; 7 + use tokio::task::JoinHandle; 8 + use tracing::{debug, info, warn}; 9 + 10 + use crate::frame::RgbFrame; 11 + 12 + #[derive(Debug, Clone)] 13 + pub struct EncoderSettings { 14 + pub width: u32, 15 + pub height: u32, 16 + pub fps: u32, 17 + pub bitrate_kbps: u32, 18 + pub keyint_sec: u32, 19 + pub x264_opts: String, 20 + pub output: String, 21 + pub include_silent_audio: bool, 22 + pub ffmpeg_path: PathBuf, 23 + } 24 + 25 + pub fn build_ffmpeg_args(settings: &EncoderSettings) -> Vec<String> { 26 + build_ffmpeg_args_with_loglevel(settings, "warning") 27 + } 28 + 29 + pub fn build_ffmpeg_args_with_loglevel(settings: &EncoderSettings, loglevel: &str) -> Vec<String> { 30 + let keyint = settings.fps.saturating_mul(settings.keyint_sec).max(1); 31 + let bufsize = settings.bitrate_kbps.saturating_mul(2); 32 + 33 + let mut args = vec![ 34 + "-hide_banner".to_string(), 35 + "-loglevel".to_string(), 36 + loglevel.to_string(), 37 + "-stats_period".to_string(), 38 + "5".to_string(), 39 + "-stats".to_string(), 40 + "-f".to_string(), 41 + "rawvideo".to_string(), 42 + "-pix_fmt".to_string(), 43 + "rgb24".to_string(), 44 + "-s".to_string(), 45 + format!("{}x{}", settings.width, settings.height), 46 + "-r".to_string(), 47 + settings.fps.to_string(), 48 + "-i".to_string(), 49 + "-".to_string(), 50 + ]; 51 + 52 + if settings.include_silent_audio { 53 + args.extend([ 54 + "-f".to_string(), 55 + "lavfi".to_string(), 56 + "-i".to_string(), 57 + "anullsrc=r=48000:cl=stereo".to_string(), 58 + ]); 59 + } 60 + 61 + args.extend([ 62 + "-c:v".to_string(), 63 + "libx264".to_string(), 64 + "-preset".to_string(), 65 + "veryfast".to_string(), 66 + "-pix_fmt".to_string(), 67 + "yuv420p".to_string(), 68 + "-b:v".to_string(), 69 + format!("{}k", settings.bitrate_kbps), 70 + "-maxrate".to_string(), 71 + format!("{}k", settings.bitrate_kbps), 72 + "-bufsize".to_string(), 73 + format!("{}k", bufsize), 74 + "-g".to_string(), 75 + keyint.to_string(), 76 + "-keyint_min".to_string(), 77 + keyint.to_string(), 78 + "-x264-params".to_string(), 79 + settings.x264_opts.clone(), 80 + ]); 81 + 82 + if settings.include_silent_audio { 83 + args.extend([ 84 + "-c:a".to_string(), 85 + "aac".to_string(), 86 + "-b:a".to_string(), 87 + "128k".to_string(), 88 + "-ar".to_string(), 89 + "48000".to_string(), 90 + "-ac".to_string(), 91 + "2".to_string(), 92 + ]); 93 + } else { 94 + args.push("-an".to_string()); 95 + } 96 + 97 + args.extend(["-f".to_string(), "flv".to_string(), settings.output.clone()]); 98 + 99 + args 100 + } 101 + 102 + #[derive(Debug)] 103 + pub struct FfmpegEncoder { 104 + child: Child, 105 + stdin: ChildStdin, 106 + stderr_task: JoinHandle<()>, 107 + } 108 + 109 + impl FfmpegEncoder { 110 + pub async fn spawn(settings: &EncoderSettings, verbose: bool) -> Result<Self> { 111 + let args = 112 + build_ffmpeg_args_with_loglevel(settings, if verbose { "info" } else { "warning" }); 113 + 114 + info!( 115 + ffmpeg = %settings.ffmpeg_path.display(), 116 + output = %settings.output, 117 + "starting ffmpeg" 118 + ); 119 + 120 + let mut cmd = Command::new(&settings.ffmpeg_path); 121 + cmd.args(&args) 122 + .stdin(std::process::Stdio::piped()) 123 + .stderr(std::process::Stdio::piped()) 124 + .stdout(std::process::Stdio::null()); 125 + 126 + let mut child = cmd.spawn().with_context(|| { 127 + format!( 128 + "failed to spawn ffmpeg from {}", 129 + settings.ffmpeg_path.display() 130 + ) 131 + })?; 132 + 133 + let stdin = child.stdin.take().context("ffmpeg stdin unavailable")?; 134 + 135 + let stderr = child.stderr.take().context("ffmpeg stderr unavailable")?; 136 + 137 + let stderr_task = tokio::spawn(async move { 138 + let mut lines = BufReader::new(stderr).lines(); 139 + while let Ok(Some(line)) = lines.next_line().await { 140 + if verbose { 141 + info!(target: "ffmpeg", "{line}"); 142 + } else { 143 + debug!(target: "ffmpeg", "{line}"); 144 + } 145 + } 146 + }); 147 + 148 + Ok(Self { 149 + child, 150 + stdin, 151 + stderr_task, 152 + }) 153 + } 154 + 155 + pub fn try_wait(&mut self) -> Result<Option<ExitStatus>> { 156 + self.child 157 + .try_wait() 158 + .context("failed to poll ffmpeg process") 159 + } 160 + 161 + pub async fn write_frame(&mut self, frame: &RgbFrame) -> Result<()> { 162 + if frame.width == 0 || frame.height == 0 { 163 + bail!("invalid frame dimensions {}x{}", frame.width, frame.height); 164 + } 165 + 166 + if let Some(status) = self.try_wait()? { 167 + bail!("ffmpeg exited early with status {status}"); 168 + } 169 + 170 + self.stdin 171 + .write_all(&frame.data) 172 + .await 173 + .context("failed writing frame to ffmpeg stdin")?; 174 + 175 + Ok(()) 176 + } 177 + 178 + pub async fn kill_and_wait(&mut self) { 179 + match self.child.kill().await { 180 + Ok(()) => {} 181 + Err(err) => warn!("failed to kill ffmpeg: {err}"), 182 + } 183 + 184 + match self.child.wait().await { 185 + Ok(status) => debug!("ffmpeg exited after kill: {status}"), 186 + Err(err) => warn!("failed waiting on ffmpeg: {err}"), 187 + } 188 + } 189 + 190 + pub async fn wait_for_exit(mut self) -> Result<ExitStatus> { 191 + drop(self.stdin); 192 + let status = self 193 + .child 194 + .wait() 195 + .await 196 + .context("failed waiting for ffmpeg exit")?; 197 + 198 + self.stderr_task.abort(); 199 + Ok(status) 200 + } 201 + } 202 + 203 + pub fn ffmpeg_executable_name() -> &'static str { 204 + if cfg!(target_os = "windows") { 205 + "ffmpeg.exe" 206 + } else { 207 + "ffmpeg" 208 + } 209 + } 210 + 211 + pub fn default_ffmpeg_sidecar_path(exe_dir: &Path) -> PathBuf { 212 + exe_dir 213 + .join("..") 214 + .join("sidecar") 215 + .join("ffmpeg") 216 + .join(ffmpeg_executable_name()) 217 + }

+32

src/error.rs

··· 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

··· 1 + use std::path::PathBuf; 2 + 3 + use thiserror::Error; 4 + 5 + #[derive(Debug, Error)] 6 + pub enum ConfigError { 7 + #[error("website URL must use http or https, got `{0}`")] 8 + UnsupportedWebsiteScheme(String), 9 + #[error("invalid website URL `{0}`")] 10 + InvalidWebsiteUrl(String), 11 + #[error("`{field}` out of range: got {actual}, expected {min}..={max}")] 12 + OutOfRange { 13 + field: &'static str, 14 + min: u64, 15 + max: u64, 16 + actual: u64, 17 + }, 18 + #[error(transparent)] 19 + Rtmp(#[from] crate::rtmp::RtmpError), 20 + } 21 + 22 + #[derive(Debug, Error)] 23 + pub enum RuntimeError { 24 + #[error("shutdown requested")] 25 + ShutdownRequested, 26 + #[error("timed out waiting for screencast frames")] 27 + ScreencastTimeout, 28 + #[error( 29 + "missing sidecar binary `{name}` at `{path}`. Provide an explicit override path or place sidecars at this location. For local development, fetch sidecars with `./scripts/fetch-sidecars.sh` (macOS/Linux) or `./scripts/fetch-sidecars.ps1` (Windows). Supported packaged targets: macOS arm64, Linux x86_64, Windows x86_64" 30 + )] 31 + MissingSidecar { name: &'static str, path: PathBuf }, 32 + }

+37

src/frame.rs

··· 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

··· 1 + use anyhow::{Context, Result}; 2 + use base64::Engine; 3 + 4 + #[derive(Debug, Clone)] 5 + pub struct RgbFrame { 6 + pub width: u32, 7 + pub height: u32, 8 + pub data: Vec<u8>, 9 + } 10 + 11 + pub fn decode_screencast_frame( 12 + encoded_data: &str, 13 + target_width: u32, 14 + target_height: u32, 15 + ) -> Result<RgbFrame> { 16 + let bytes = base64::engine::general_purpose::STANDARD 17 + .decode(encoded_data) 18 + .context("failed to decode CDP frame payload")?; 19 + 20 + let img = image::load_from_memory(&bytes).context("failed to decode image bytes")?; 21 + let normalized = if img.width() == target_width && img.height() == target_height { 22 + img 23 + } else { 24 + img.resize_exact( 25 + target_width, 26 + target_height, 27 + image::imageops::FilterType::Triangle, 28 + ) 29 + }; 30 + 31 + let rgb = normalized.to_rgb8(); 32 + Ok(RgbFrame { 33 + width: target_width, 34 + height: target_height, 35 + data: rgb.into_raw(), 36 + }) 37 + }

+7

src/lib.rs

··· 0 0 0 0 0 0 0

··· 1 + pub mod chromium; 2 + pub mod cli; 3 + pub mod encoder; 4 + pub mod error; 5 + pub mod frame; 6 + pub mod retry; 7 + pub mod rtmp;

+235

src/main.rs

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··· 1 + use std::path::PathBuf; 2 + use std::time::Duration; 3 + 4 + use anyhow::{Context, Result, bail}; 5 + use clap::Parser; 6 + use tracing::{info, warn}; 7 + 8 + use browser_stream::chromium; 9 + use browser_stream::cli::{AppConfig, CliArgs}; 10 + use browser_stream::encoder::{self, EncoderSettings, FfmpegEncoder}; 11 + use browser_stream::error::RuntimeError; 12 + use browser_stream::retry::RetryPolicy; 13 + 14 + #[derive(Debug, Clone)] 15 + struct RuntimePaths { 16 + ffmpeg: PathBuf, 17 + chromium: PathBuf, 18 + } 19 + 20 + #[tokio::main] 21 + async fn main() -> Result<()> { 22 + let args = CliArgs::parse(); 23 + init_tracing(args.verbose); 24 + 25 + let config = args.into_config()?; 26 + let runtime_paths = resolve_runtime_paths(&config)?; 27 + let retry_policy = RetryPolicy::new( 28 + config.retries, 29 + Duration::from_millis(config.retry_backoff_ms), 30 + ); 31 + 32 + run_with_retry(&config, &runtime_paths, &retry_policy).await 33 + } 34 + 35 + async fn run_with_retry( 36 + config: &AppConfig, 37 + runtime_paths: &RuntimePaths, 38 + retry_policy: &RetryPolicy, 39 + ) -> Result<()> { 40 + let mut failures = 0_u32; 41 + 42 + loop { 43 + let attempt = failures + 1; 44 + info!(attempt, "starting stream attempt"); 45 + 46 + let result = run_once(config, runtime_paths).await; 47 + 48 + match result { 49 + Ok(()) => return Ok(()), 50 + Err(err) => { 51 + if is_shutdown_error(&err) { 52 + info!("shutdown requested, exiting"); 53 + // Force process termination in case any background runtime task/thread 54 + // holds the process open after graceful shutdown. 55 + std::process::exit(0); 56 + } 57 + 58 + failures = failures.saturating_add(1); 59 + if !retry_policy.should_retry(failures) { 60 + return Err(err.context(format!( 61 + "stream failed after {attempt} attempt(s) with {failures} failure(s)" 62 + ))); 63 + } 64 + 65 + warn!( 66 + attempt, 67 + failures, 68 + backoff_ms = retry_policy.backoff.as_millis(), 69 + error = %err, 70 + "stream attempt failed; retrying" 71 + ); 72 + 73 + tokio::select! { 74 + _ = tokio::time::sleep(retry_policy.backoff) => {} 75 + _ = tokio::signal::ctrl_c() => { 76 + info!("shutdown requested during retry backoff, exiting"); 77 + return Ok(()); 78 + } 79 + } 80 + } 81 + } 82 + } 83 + } 84 + 85 + async fn run_once(config: &AppConfig, runtime_paths: &RuntimePaths) -> Result<()> { 86 + let settings = EncoderSettings { 87 + width: config.width, 88 + height: config.height, 89 + fps: config.fps, 90 + bitrate_kbps: config.bitrate_kbps, 91 + keyint_sec: config.keyint_sec, 92 + x264_opts: config.x264_opts.clone(), 93 + output: config.output.clone(), 94 + include_silent_audio: !config.no_audio, 95 + ffmpeg_path: runtime_paths.ffmpeg.clone(), 96 + }; 97 + 98 + let mut encoder = FfmpegEncoder::spawn(&settings, config.verbose).await?; 99 + 100 + let stream_result = 101 + chromium::stream_browser_to_encoder(config, &runtime_paths.chromium, &mut encoder).await; 102 + 103 + match stream_result { 104 + Ok(()) => { 105 + let status = encoder.wait_for_exit().await?; 106 + if !status.success() { 107 + bail!("ffmpeg exited with status {status}"); 108 + } 109 + Ok(()) 110 + } 111 + Err(err) => { 112 + encoder.kill_and_wait().await; 113 + Err(err) 114 + } 115 + } 116 + } 117 + 118 + fn resolve_runtime_paths(config: &AppConfig) -> Result<RuntimePaths> { 119 + let current_exe = 120 + std::env::current_exe().context("failed to determine current executable path")?; 121 + let exe_dir = current_exe 122 + .parent() 123 + .context("failed to determine current executable directory")?; 124 + 125 + let ffmpeg_path = resolve_ffmpeg_path(config.ffmpeg_path.clone(), exe_dir)?; 126 + 127 + let chromium_path = resolve_binary_path( 128 + config.chromium_path.clone(), 129 + chromium::default_chromium_sidecar_path(exe_dir), 130 + "headless_shell", 131 + )?; 132 + 133 + Ok(RuntimePaths { 134 + ffmpeg: ffmpeg_path, 135 + chromium: chromium_path, 136 + }) 137 + } 138 + 139 + fn resolve_binary_path( 140 + override_path: Option<PathBuf>, 141 + default_path: PathBuf, 142 + name: &'static str, 143 + ) -> Result<PathBuf> { 144 + let candidate = override_path.unwrap_or(default_path); 145 + 146 + if candidate.is_file() { 147 + return Ok(candidate); 148 + } 149 + 150 + Err(RuntimeError::MissingSidecar { 151 + name, 152 + path: candidate, 153 + } 154 + .into()) 155 + } 156 + 157 + fn resolve_ffmpeg_path( 158 + override_path: Option<PathBuf>, 159 + exe_dir: &std::path::Path, 160 + ) -> Result<PathBuf> { 161 + if let Some(path) = override_path { 162 + return resolve_binary_path(Some(path), PathBuf::new(), "ffmpeg"); 163 + } 164 + 165 + let sidecar = encoder::default_ffmpeg_sidecar_path(exe_dir); 166 + let system = find_in_path(encoder::ffmpeg_executable_name()); 167 + 168 + if cfg!(target_os = "macos") { 169 + if let Some(system_path) = system { 170 + info!( 171 + ffmpeg = %system_path.display(), 172 + "using system ffmpeg on macOS (preferred over sidecar)" 173 + ); 174 + return Ok(system_path); 175 + } 176 + } 177 + 178 + if sidecar.is_file() { 179 + return Ok(sidecar); 180 + } 181 + 182 + if let Some(system_path) = find_in_path(encoder::ffmpeg_executable_name()) { 183 + info!( 184 + ffmpeg = %system_path.display(), 185 + "using system ffmpeg from PATH" 186 + ); 187 + return Ok(system_path); 188 + } 189 + 190 + Err(RuntimeError::MissingSidecar { 191 + name: "ffmpeg", 192 + path: sidecar, 193 + } 194 + .into()) 195 + } 196 + 197 + fn find_in_path(executable_name: &str) -> Option<PathBuf> { 198 + let path_var = std::env::var_os("PATH")?; 199 + let candidates = std::env::split_paths(&path_var); 200 + 201 + for dir in candidates { 202 + let direct = dir.join(executable_name); 203 + if direct.is_file() { 204 + return Some(direct); 205 + } 206 + 207 + if cfg!(target_os = "windows") { 208 + let exe = dir.join(format!("{executable_name}.exe")); 209 + if exe.is_file() { 210 + return Some(exe); 211 + } 212 + } 213 + } 214 + 215 + None 216 + } 217 + 218 + fn is_shutdown_error(err: &anyhow::Error) -> bool { 219 + err.downcast_ref::<RuntimeError>() 220 + .is_some_and(|runtime| matches!(runtime, RuntimeError::ShutdownRequested)) 221 + } 222 + 223 + fn init_tracing(verbose: bool) { 224 + let filter = if verbose { 225 + tracing_subscriber::EnvFilter::new("info,browser_stream=debug,ffmpeg=info") 226 + } else { 227 + tracing_subscriber::EnvFilter::try_from_default_env() 228 + .unwrap_or_else(|_| tracing_subscriber::EnvFilter::new("info")) 229 + }; 230 + 231 + let _ = tracing_subscriber::fmt() 232 + .with_env_filter(filter) 233 + .with_target(true) 234 + .try_init(); 235 + }

+20

src/retry.rs

··· 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

··· 1 + use std::time::Duration; 2 + 3 + #[derive(Debug, Clone)] 4 + pub struct RetryPolicy { 5 + pub max_retries: u32, 6 + pub backoff: Duration, 7 + } 8 + 9 + impl RetryPolicy { 10 + pub fn new(max_retries: u32, backoff: Duration) -> Self { 11 + Self { 12 + max_retries, 13 + backoff, 14 + } 15 + } 16 + 17 + pub fn should_retry(&self, failures_so_far: u32) -> bool { 18 + failures_so_far <= self.max_retries 19 + } 20 + }

+54

src/rtmp.rs

··· 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

··· 1 + use thiserror::Error; 2 + use url::Url; 3 + 4 + #[derive(Debug, Error, PartialEq)] 5 + pub enum RtmpError { 6 + #[error("provide either `--output` or both `--rtmp-url` and `--stream-key`")] 7 + MissingDestination, 8 + #[error("stream key cannot be empty")] 9 + EmptyStreamKey, 10 + #[error("invalid RTMP output URL `{0}`")] 11 + InvalidOutputUrl(String), 12 + #[error("RTMP URL scheme must be `rtmp` or `rtmps`, got `{0}`")] 13 + InvalidScheme(String), 14 + } 15 + 16 + pub fn build_output( 17 + output: Option<String>, 18 + rtmp_url: Option<String>, 19 + stream_key: Option<String>, 20 + ) -> Result<String, RtmpError> { 21 + if let Some(full_output) = output { 22 + let trimmed = full_output.trim(); 23 + validate_output_url(trimmed)?; 24 + return Ok(trimmed.to_string()); 25 + } 26 + 27 + match (rtmp_url, stream_key) { 28 + (Some(base), Some(key)) => { 29 + let normalized_key = normalize_stream_key(&key)?; 30 + let merged = format!("{}/{}", base.trim_end_matches('/'), normalized_key); 31 + validate_output_url(&merged)?; 32 + Ok(merged) 33 + } 34 + _ => Err(RtmpError::MissingDestination), 35 + } 36 + } 37 + 38 + fn normalize_stream_key(raw: &str) -> Result<String, RtmpError> { 39 + let key = raw.trim().trim_start_matches('/').trim(); 40 + if key.is_empty() { 41 + return Err(RtmpError::EmptyStreamKey); 42 + } 43 + 44 + Ok(key.to_string()) 45 + } 46 + 47 + fn validate_output_url(candidate: &str) -> Result<(), RtmpError> { 48 + let parsed = 49 + Url::parse(candidate).map_err(|_| RtmpError::InvalidOutputUrl(candidate.to_string()))?; 50 + match parsed.scheme() { 51 + "rtmp" | "rtmps" => Ok(()), 52 + other => Err(RtmpError::InvalidScheme(other.to_string())), 53 + } 54 + }

+120

tests/cli.rs

··· 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

··· 1 + use assert_matches::assert_matches; 2 + use clap::Parser; 3 + 4 + use browser_stream::cli::CliArgs; 5 + use browser_stream::error::ConfigError; 6 + use browser_stream::rtmp::RtmpError; 7 + 8 + #[test] 9 + fn parses_defaults_and_required_fields() { 10 + let args = CliArgs::try_parse_from([ 11 + "browser-stream", 12 + "--url", 13 + "https://example.com", 14 + "--output", 15 + "rtmp://live.example.com/app/stream", 16 + ]) 17 + .expect("cli parse should succeed"); 18 + 19 + let config = args.into_config().expect("config should validate"); 20 + 21 + assert_eq!(config.width, 1920); 22 + assert_eq!(config.height, 1080); 23 + assert_eq!(config.fps, 30); 24 + assert_eq!(config.bitrate_kbps, 4500); 25 + assert_eq!(config.keyint_sec, 1); 26 + assert_eq!(config.x264_opts, "bframes=0"); 27 + assert_eq!(config.retries, 5); 28 + assert_eq!(config.retry_backoff_ms, 1000); 29 + assert_eq!(config.startup_delay_ms, 2000); 30 + assert_eq!(config.frame_timeout_ms, 30000); 31 + assert!(!config.no_audio); 32 + } 33 + 34 + #[test] 35 + fn requires_destination_settings() { 36 + let args = CliArgs::try_parse_from(["browser-stream", "--url", "https://example.com"]) 37 + .expect("cli parse should succeed"); 38 + 39 + let err = args.into_config().expect_err("validation should fail"); 40 + assert_matches!(err, ConfigError::Rtmp(RtmpError::MissingDestination)); 41 + } 42 + 43 + #[test] 44 + fn output_precedence_wins_over_split_fields() { 45 + let args = CliArgs::try_parse_from([ 46 + "browser-stream", 47 + "--url", 48 + "https://example.com", 49 + "--output", 50 + "rtmps://primary.example.com/app/final", 51 + "--rtmp-url", 52 + "rtmp://secondary.example.com/app", 53 + "--stream-key", 54 + "secondary", 55 + ]) 56 + .expect("cli parse should succeed"); 57 + 58 + let config = args.into_config().expect("config should validate"); 59 + assert_eq!(config.output, "rtmps://primary.example.com/app/final"); 60 + } 61 + 62 + #[test] 63 + fn rejects_non_http_website_scheme() { 64 + let args = CliArgs::try_parse_from([ 65 + "browser-stream", 66 + "--url", 67 + "file:///tmp/index.html", 68 + "--output", 69 + "rtmp://live.example.com/app/key", 70 + ]) 71 + .expect("cli parse should succeed"); 72 + 73 + let err = args.into_config().expect_err("validation should fail"); 74 + assert_matches!(err, ConfigError::UnsupportedWebsiteScheme(s) if s == "file"); 75 + } 76 + 77 + #[test] 78 + fn rejects_out_of_range_fps() { 79 + let args = CliArgs::try_parse_from([ 80 + "browser-stream", 81 + "--url", 82 + "https://example.com", 83 + "--output", 84 + "rtmp://live.example.com/app/key", 85 + "--fps", 86 + "121", 87 + ]) 88 + .expect("cli parse should succeed"); 89 + 90 + let err = args.into_config().expect_err("validation should fail"); 91 + assert_matches!( 92 + err, 93 + ConfigError::OutOfRange { field, min: 1, max: 120, actual: 121 } if field == "fps" 94 + ); 95 + } 96 + 97 + #[test] 98 + fn rejects_out_of_range_frame_timeout() { 99 + let args = CliArgs::try_parse_from([ 100 + "browser-stream", 101 + "--url", 102 + "https://example.com", 103 + "--output", 104 + "rtmp://live.example.com/app/key", 105 + "--frame-timeout-ms", 106 + "500", 107 + ]) 108 + .expect("cli parse should succeed"); 109 + 110 + let err = args.into_config().expect_err("validation should fail"); 111 + assert_matches!( 112 + err, 113 + ConfigError::OutOfRange { 114 + field, 115 + min: 1000, 116 + max, 117 + actual: 500 118 + } if field == "frame-timeout-ms" && max == u64::MAX 119 + ); 120 + }

+80

tests/ffmpeg_cmd.rs

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··· 1 + use std::path::PathBuf; 2 + 3 + use browser_stream::encoder::{EncoderSettings, build_ffmpeg_args}; 4 + 5 + #[test] 6 + fn derives_keyint_from_fps_and_seconds() { 7 + let settings = EncoderSettings { 8 + width: 1280, 9 + height: 720, 10 + fps: 30, 11 + bitrate_kbps: 2500, 12 + keyint_sec: 2, 13 + x264_opts: "bframes=0".to_string(), 14 + output: "rtmp://live.example.com/app/key".to_string(), 15 + include_silent_audio: true, 16 + ffmpeg_path: PathBuf::from("/tmp/ffmpeg"), 17 + }; 18 + 19 + let args = build_ffmpeg_args(&settings); 20 + 21 + assert_pair(&args, "-g", "60"); 22 + assert_pair(&args, "-keyint_min", "60"); 23 + } 24 + 25 + #[test] 26 + fn includes_cbr_like_flags() { 27 + let settings = EncoderSettings { 28 + width: 1920, 29 + height: 1080, 30 + fps: 60, 31 + bitrate_kbps: 4500, 32 + keyint_sec: 1, 33 + x264_opts: "bframes=0".to_string(), 34 + output: "rtmps://live.example.com/app/key".to_string(), 35 + include_silent_audio: true, 36 + ffmpeg_path: PathBuf::from("/tmp/ffmpeg"), 37 + }; 38 + 39 + let args = build_ffmpeg_args(&settings); 40 + 41 + assert_pair(&args, "-b:v", "4500k"); 42 + assert_pair(&args, "-maxrate", "4500k"); 43 + assert_pair(&args, "-bufsize", "9000k"); 44 + } 45 + 46 + #[test] 47 + fn passes_x264_opts_and_output() { 48 + let settings = EncoderSettings { 49 + width: 1920, 50 + height: 1080, 51 + fps: 30, 52 + bitrate_kbps: 3000, 53 + keyint_sec: 1, 54 + x264_opts: "bframes=0:scenecut=0".to_string(), 55 + output: "rtmp://live.example.com/app/key".to_string(), 56 + include_silent_audio: true, 57 + ffmpeg_path: PathBuf::from("/tmp/ffmpeg"), 58 + }; 59 + 60 + let args = build_ffmpeg_args(&settings); 61 + 62 + assert_pair(&args, "-x264-params", "bframes=0:scenecut=0"); 63 + assert_eq!( 64 + args.last().expect("args should not be empty"), 65 + "rtmp://live.example.com/app/key" 66 + ); 67 + } 68 + 69 + fn assert_pair(args: &[String], flag: &str, value: &str) { 70 + let index = args 71 + .iter() 72 + .position(|item| item == flag) 73 + .expect("flag should exist in arg list"); 74 + 75 + let next = args 76 + .get(index + 1) 77 + .expect("flag should have a following value"); 78 + 79 + assert_eq!(next, value); 80 + }

+13

tests/frame.rs

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··· 1 + use browser_stream::frame::decode_screencast_frame; 2 + 3 + #[test] 4 + fn decodes_and_resizes_frame() { 5 + // 1x1 red PNG 6 + let png_base64 = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAAAAAA6fptVAAAACklEQVR4nGNgAAAAAgABSK+kcQAAAABJRU5ErkJggg=="; 7 + 8 + let frame = decode_screencast_frame(png_base64, 2, 2).expect("decode should work"); 9 + 10 + assert_eq!(frame.width, 2); 11 + assert_eq!(frame.height, 2); 12 + assert_eq!(frame.data.len(), 2 * 2 * 3); 13 + }

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tests/retry.rs

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··· 1 + use std::time::Duration; 2 + 3 + use browser_stream::retry::RetryPolicy; 4 + 5 + #[test] 6 + fn retries_up_to_configured_limit() { 7 + let policy = RetryPolicy::new(5, Duration::from_millis(100)); 8 + 9 + assert!(policy.should_retry(1)); 10 + assert!(policy.should_retry(5)); 11 + assert!(!policy.should_retry(6)); 12 + }

+59

tests/rtmp.rs

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··· 1 + use assert_matches::assert_matches; 2 + 3 + use browser_stream::rtmp::{RtmpError, build_output}; 4 + 5 + #[test] 6 + fn builds_output_from_split_fields() { 7 + let output = build_output( 8 + None, 9 + Some("rtmp://live.example.com/app".to_string()), 10 + Some("streamkey123".to_string()), 11 + ) 12 + .expect("build should succeed"); 13 + 14 + assert_eq!(output, "rtmp://live.example.com/app/streamkey123"); 15 + } 16 + 17 + #[test] 18 + fn trims_slashes_and_spaces_in_stream_key() { 19 + let output = build_output( 20 + None, 21 + Some("rtmp://live.example.com/app/".to_string()), 22 + Some(" /abc123 ".to_string()), 23 + ) 24 + .expect("build should succeed"); 25 + 26 + assert_eq!(output, "rtmp://live.example.com/app/abc123"); 27 + } 28 + 29 + #[test] 30 + fn output_flag_takes_precedence() { 31 + let output = build_output( 32 + Some("rtmps://primary.example.com/live/final".to_string()), 33 + Some("rtmp://secondary.example.com/app".to_string()), 34 + Some("secondary".to_string()), 35 + ) 36 + .expect("build should succeed"); 37 + 38 + assert_eq!(output, "rtmps://primary.example.com/live/final"); 39 + } 40 + 41 + #[test] 42 + fn rejects_invalid_scheme() { 43 + let err = build_output(Some("https://example.com/not-rtmp".to_string()), None, None) 44 + .expect_err("should fail"); 45 + 46 + assert_matches!(err, RtmpError::InvalidScheme(s) if s == "https"); 47 + } 48 + 49 + #[test] 50 + fn rejects_empty_key() { 51 + let err = build_output( 52 + None, 53 + Some("rtmp://live.example.com/app".to_string()), 54 + Some(" / ".to_string()), 55 + ) 56 + .expect_err("should fail"); 57 + 58 + assert_matches!(err, RtmpError::EmptyStreamKey); 59 + }