adminandClaude Opus 4.8
4ee945ca0d
Hardware encoding
- Detect the best usable encoder at startup by encoding a test frame with each
candidate in turn (nvenc, qsv, amf, then libx264). Being compiled into ffmpeg
is not enough: h264_amf fails without amfrt64.dll and h264_qsv fails without an
Intel iGPU, so the probe is the only reliable answer.
- Translate the quality target into the chosen encoder's own vocabulary. libx264's
-crf and "ultrafast" mean nothing to h264_nvenc, which takes -cq and p1..p7, so
passing the configured values straight through would have been silently wrong.
- On the reference GTX 1060 a 1080p->720p rendition costs ~62% of a core on NVENC
versus ~109% on libx264 ultrafast.
Per-rendition supervision
- Track encoder processes per rendition, not per stream. is_running answered
"any alive", so when the source ("原画") encoder died while 1080p and 720p kept
running, the supervisor saw a healthy stream and never restarted it — the
source URL then 404'd permanently. It now requires every rendition to be alive
and reports which ones are down.
- Restart only the dead renditions, so a single failure no longer interrupts
viewers on the renditions that were fine.
Production serving
- Serve the built frontend from FastAPI with SPA fallback, so production is one
process and one port with no Node runtime. Node becomes a build-time dependency.
- start.ps1/start.sh build the frontend on first run instead of failing to a 503.
Cleanup
- Drop the duplicated top-left LIVE badge; the control strip already carries it.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
71 lines
2.7 KiB
PowerShell
71 lines
2.7 KiB
PowerShell
param(
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[switch]$InstallDeps,
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[switch]$BuildFrontend,
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[string]$HostAddress = "0.0.0.0",
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[int]$BackendPort = 8080
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)
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$ErrorActionPreference = "Stop"
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$Base = Split-Path -Parent $MyInvocation.MyCommand.Path
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$BackendDir = Join-Path $Base "backend"
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$RuntimeDir = Join-Path $Base "runtime"
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$HlsDir = Join-Path $RuntimeDir "hls"
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$ReplayDir = Join-Path $RuntimeDir "replay"
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$LogDir = Join-Path $RuntimeDir "logs"
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New-Item -ItemType Directory -Force -Path $RuntimeDir, $HlsDir, $ReplayDir, $LogDir | Out-Null
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if (-not $env:LS_HLS_RUNTIME_DIR) { $env:LS_HLS_RUNTIME_DIR = $HlsDir }
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if (-not $env:LS_REPLAY_MEDIA_DIR) { $env:LS_REPLAY_MEDIA_DIR = $ReplayDir }
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function Resolve-Python {
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$candidates = @(
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(Join-Path $BackendDir ".venv\Scripts\python.exe"),
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(Join-Path $BackendDir "venv\Scripts\python.exe"),
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"python",
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"py"
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)
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foreach ($candidate in $candidates) {
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if (Test-Path $candidate) { return $candidate }
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$cmd = Get-Command $candidate -ErrorAction SilentlyContinue
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if ($cmd) { return $cmd.Source }
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}
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throw "Python not found. Install Python 3.11+ or create backend\.venv."
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}
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$Python = Resolve-Python
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if ($InstallDeps) {
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Write-Host "[StreamCore] Installing backend dependencies..."
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Push-Location $BackendDir
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& $Python -m pip install -r requirements.txt
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Pop-Location
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}
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# The frontend is built once and then served by the backend, so Node is only
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# needed here — production never runs npm. Done automatically on a first start so
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# a fresh checkout does not come up as a 503 with no obvious cause.
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$FrontendDir = Join-Path $Base "frontend"
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$DistDir = Join-Path $FrontendDir "dist"
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if ($BuildFrontend -or -not (Test-Path (Join-Path $DistDir "index.html"))) {
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if (Get-Command "npm" -ErrorAction SilentlyContinue) {
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Write-Host "[StreamCore] Building frontend..."
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Push-Location $FrontendDir
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if (-not (Test-Path "node_modules")) { npm install }
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npm run build
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Pop-Location
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} else {
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Write-Warning "npm not found and frontend\dist is missing; the site will return 503."
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Write-Warning "Install Node.js and run: cd frontend; npm install; npm run build"
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}
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}
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# MediaMTX, the transcoders and the HLS tree are managed by the backend itself:
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# it starts the media origin at boot, supervises ffmpeg, and restarts either if it
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# dies. This launcher only has to bring up the process that owns all of that.
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Write-Host "[StreamCore] Starting backend on ${HostAddress}:${BackendPort} ..."
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Write-Host "[StreamCore] Frontend, MediaMTX, transcoders and HLS are served by the backend."
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$backendArgs = @("-m", "uvicorn", "main:app", "--host", $HostAddress, "--port", "$BackendPort")
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& $Python @backendArgs
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