ethernet
cdaf0cf091
The composite action .github/actions/e2e-screen-record owns setup and lifecycle on all three OSes: ffmpeg via apt/brew-verify/winget+cache, capture via x11grab/gdigrab/avfoundation, mkv at 15fps stopped by 'q' on live stdin with kill fallback. Linux runners have no display, so start brings up a dedicated Xvfb :99 and exports DISPLAY - one display serves both the recorder and any app a later step launches. Recording moves out of the GUI driver into workflow infrastructure - that is what makes it uniform - and a missing ffmpeg or a zero-frame file now FAILS the leg instead of skipping silently: the graceful-skip path is how the windows leg shipped no recording.mkv while green. Lifecycle proven locally: start against lavfi testsrc, q-stop, ffprobe duration check (record-start.sh/record-stop.sh under nix ffmpeg).
63 lines
2.5 KiB
PowerShell
63 lines
2.5 KiB
PowerShell
# Start a continuous ffmpeg screen recording in the background (windows).
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#
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# Usage: powershell -File record-start.ps1 -OutFile recording.mkv
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#
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# The graceful stop is the character 'q' on ffmpeg's LIVE stdin, which only
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# System.Diagnostics.Process exposes (Start-Process -RedirectStandardInput
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# hands ffmpeg a file handle already at EOF). This script therefore spawns a
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# detached HOLDER powershell that owns the ffmpeg process and its stdin pipe,
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# and stops it when a STOP marker file appears; record-stop.ps1 writes the
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# marker. mkv on purpose: it stays playable even unfinalized. A missing
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# ffmpeg is a HARD error - a graceful skip makes the missing tool invisible
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# and the artifact silently loses its recording.
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#Requires -Version 5.1
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param(
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[Parameter(Mandatory = $true)][string]$OutFile
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)
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$ErrorActionPreference = "Stop"
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if (-not (Get-Command ffmpeg -ErrorAction SilentlyContinue)) {
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Write-Host "record-start: ffmpeg not on PATH (the workflow must install it)"
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exit 1
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}
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$outDir = Split-Path -Parent $OutFile
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if ($outDir -and -not (Test-Path -LiteralPath $outDir)) {
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New-Item -ItemType Directory -Path $outDir -Force | Out-Null
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}
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$stopMarker = "$OutFile.stop"
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$stateFile = "$OutFile.state"
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Remove-Item -LiteralPath $stopMarker, $stateFile -Force -ErrorAction SilentlyContinue
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$holder = "$OutFile.holder.ps1"
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@'
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param([string]$OutFile, [string]$StopMarker)
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$psi = New-Object System.Diagnostics.ProcessStartInfo
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$psi.FileName = "ffmpeg"
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$psi.Arguments = "-y -f gdigrab -framerate 15 -i desktop " +
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"-hide_banner -loglevel error " +
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"-c:v libx264 -preset ultrafast -pix_fmt yuv420p `"$OutFile`""
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$psi.RedirectStandardInput = $true
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$psi.UseShellExecute = $false
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$proc = [System.Diagnostics.Process]::Start($psi)
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Set-Content -LiteralPath "$OutFile.ffpid" -Value $proc.Id
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while (-not $proc.HasExited) {
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if (Test-Path -LiteralPath $StopMarker) {
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try {
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$proc.StandardInput.Write("q")
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$proc.StandardInput.Close()
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} catch {}
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if (-not $proc.WaitForExit(15000)) { try { $proc.Kill() } catch {} }
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break
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}
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Start-Sleep -Milliseconds 500
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}
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'@ | Set-Content -LiteralPath $holder -Encoding UTF8
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$holderProc = Start-Process -FilePath "powershell.exe" `
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-ArgumentList "-NoProfile", "-ExecutionPolicy", "Bypass", "-File", $holder, "-OutFile", $OutFile, "-StopMarker", $stopMarker `
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-WindowStyle Hidden -PassThru
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Set-Content -LiteralPath $stateFile -Value "$($holderProc.Id) $stopMarker"
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Write-Host "record-start: recording to $OutFile (holder pid $($holderProc.Id))"
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