Convert-AudioWavFile.ps1
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function Convert-AudioWavFile { <# .SYNOPSIS Converts WAV audio file in audio formats that can be played back by simple MP3 Players such as DFPlayer Mini .DESCRIPTION Uses ffmpeg.exe to convert the audio file format of WAV audio files either to supported WAV files or MP3. On Windows, if ffmpeg.exe is not present, it will be downloaded automatically and stored in a temp folder. On other operating systems, ffmpeg.exe needs to be manually downloaded (i.e. from https://ffbinaries.com/downloads) and placed here: $env:temp\ffmpeg\ffmpeg.exe .PARAMETER Path Path to original WAV audio file .PARAMETER OutPath Path to new audio file to be created .PARAMETER CreateMp3 When specified, the new audio file is a mp3 file. Else, it remains a wav file. .PARAMETER Force Overwrites target file when it exists. .EXAMPLE Convert-AudioWavFile -Path c:\test\test.wav -OutPath c:\test\test.mp3 -Force Converts wav file to wav encoding that can be played back by DFPLayer Mini. If the target file exists, it will be overwritten. .EXAMPLE Convert-AudioWavFile -Path c:\test\test.wav -OutPath c:\test\new.wav Converts wav file to a new wav file using encoding that can be played back by DFPlayer Mini. If the target file exists, an exception is raised. #> param ( [String] [Parameter(Mandatory,ValueFromPipeline,ValueFromPipelineByPropertyName)] [Alias('FullName')] $Path, [String] [Parameter(Mandatory,ValueFromPipelineByPropertyName)] $OutPath, [switch] $CreateMp3, [switch] $Force ) begin { $executablePath = Assert-FfmpegIsPresent } process { $file = Get-Item -Path $Path $extension = $file.Extension.ToLower() if ($extension -ne '.wav') { throw "No WAV Audio File: $Path" } if ($CreateMp3) { $OutPath = [system.io.Path]::ChangeExtension($OutPath, 'mp3') } $exists = Test-Path -LiteralPath $OutPath -PathType Leaf if ($exists -and $Force) { Remove-Item -LiteralPath $OutPath -Force } $exists = Test-Path -LiteralPath $OutPath -PathType Leaf if (!$exists) { if ($CreateMp3) { $null = & $executablePath -n -i $Path -ar 44100 -ac 1 -b:a 128k $OutPath *>&1 } else { $null = & $executablePath -n -i $Path -c:a adpcm_ima_wav -ar 44100 -ac 1 $OutPath *>&1 } } else { Write-Warning "Target file '$OutPath' exists. Use -Force to overwrite." } } } |