Assert-FfprobeIsPresent.ps1
|
function Assert-FfprobeIsPresent { <# .SYNOPSIS Returns the path to the ffprobe.exe executable. If the executable is not present, it will be automatically downloaded (on Windows), or a message appears with instructions on how to install it (on other OS). .DESCRIPTION ffprobe.exe is a free open-source tool to analyze the format and encoding of audio file content. .PARAMETER ExecutablePath Optional. When specified, the executable is expected at this path, and when missing, will be downloaded to this path. When not specified, the default location is $env:temp\ffprobe\ffprobe.exe .PARAMETER Force Downloads the tool even if it exists already (i.e. to ensure the latest version) .EXAMPLE $path = Assert-FfprobeIsPresent returns the path to ffprobe.exe so it can then be called. #> [CmdletBinding()] param ( [String] $ExecutablePath = (Join-Path $env:temp -ChildPath ffprobe | Join-Path -ChildPath ffprobe.exe), [switch] $Force ) $exists = Test-Path -Path $ExecutablePath if ($exists -and (!$Force)) { return $ExecutablePath } $windows = Test-IsWindows if ($windows) { $url = 'https://github.com/ffbinaries/ffbinaries-prebuilt/releases/download/v6.1/ffprobe-6.1-win-64.zip' $archive = Join-Path -Path $env:temp -ChildPath ffprobe.zip $archiveUnpacked = $ExecutablePath | Split-Path Write-Host "ffprobe.exe not present, downloading (53KB)..." Invoke-WebRequest -Uri $url -OutFile $archive -UseBasicParsing Unblock-File -Path $archive Write-Host "Unpacking downloaded archive..." -NoNewline Expand-Archive -Path $archive -DestinationPath $archiveUnpacked -Force Remove-Item -Path $archive $exists = Test-Path -Path $ExecutablePath if ($exists) { Write-Host "success." } else { Write-Host "failed: unable to write to $ExecutablePath" } } if ($exists) { return $ExecutablePath } else { Write-Host @' You need to manually download "ffprobe.exe" from here: https://ffbinaries.com/downloads After you have downloaded the archive, unblock and unpack it, and move ffprobe.exe (not ffmpeg.exe!) to this location: '@ Write-Host $ExecutablePath -ForegroundColor Black -BackgroundColor White throw "ffprobe.exe not found: $ExecutablePath does not exist." } } |