Convert-Media.ps1
|
function Convert-Media { <# .Synopsis Converts media from one format to another .Description Converts media from one format to another, using ffmpeg .Example Convert-Media "a.mov" "a.mp4" .Link Get-Media .Link Get-RoughDraftExtension .Link Use-RoughDraftExtension #> [OutputType([IO.FileInfo], [Management.Automation.Job])] [CmdletBinding(DefaultParameterSetName='Convert-Media')] param( # The input path [Parameter(Mandatory,Position=0,ValueFromPipelineByPropertyName)] [Alias('Fullname')] [string] $InputPath, # The output path [Parameter(Mandatory,Position=1,ValueFromPipelineByPropertyName)] [string] $OutputPath, # The codec used for the conversion. If the file is a video or image file, then this will be treated as a the video codec. [Parameter(ValueFromPipelineByPropertyName)] [string] $Codec, # The path to FFMpeg.exe. By default, checks in Program Files\FFMpeg\. Download FFMpeg from http://ffmpeg.org/. [string] $FFMpegPath, # The frame rate of the outputted video [string] $FrameRate, # If set, will copy the audio streams and will not re-encode them. [switch] $CopyAudio, # If provided, will re-encode the audio using the given codec [string] $AudioCodec, # If provided, will re-encode the file with a given video codec. This affects the input files, where -Codec affects the final output. [string] $VideoCodec, # If provided, will apply audio filters to the file [CmdletBinding(DefaultParameterSetName='Convert-Media')] [string[]] $AudioFilter, # If provided, will apply video filters to the file [CmdletBinding(DefaultParameterSetName='Convert-Media')] [string[]] $VideoFilter, # If provided, will encode the audio at a given bitrate [string] $AudioBitrate, # Used to specify the audio stream. If more than one audio stream is found and this parameter is not supplied, Convert-Media will attempt to find an audio stream that matches the current culture language. [int] $AudioStreamIndex = -1, # The audio channel count. This can be used to force 5.1 channel audio (which is supported by only a few codecs) into stereo audio (which is supported by almost all codecs) [uint32] $AudioChannelCount, # The metadata to put in the converted file [Collections.IDictionary] $MetaData, # The timespan to start splitting the video [Parameter(Position=2, ValueFromPipelineByPropertyName)] [Timespan] $Start, # The time span to end splitting the video [Parameter(Position=3, ValueFromPipelineByPropertyName)] [Timespan] $End, # If provided, will output a specified number of frames from the video file [Uint32] $VideoFrameCount, # If provided, will use a specific pixel format for video and image output. This maps to the -pix_fmt parameter in ffmpeg. [Parameter(ValueFromPipelineByPropertyName)] [Alias('Pix_Fmt')] [string] $PixelFormat, # If set, will run inside of a background job [Switch] $AsJob, # If set, this will loop the input source. [Switch] $Loop, # If set, this will loop the input source any number of times. [int] $LoopCount ) dynamicParam { $myCmd = $MyInvocation.MyCommand Use-RoughDraftExtension -CommandName $myCmd -DynamicParameter } begin { # Create an array to accumulate piped in objects. $accumulate = [Collections.ArrayList]::new() $culture = Get-Culture } process { if ($AsJob) { # If -AsJob was passed, return & $StartRoughDraftJob # start a background job. } $null = $accumulate.Add(@{} + $PSBoundParameters) } end { #region Find FFMpeg $ffMpeg = Get-FFMpeg -FFMpegPath $FFMpegPath if (-not $ffMpeg) { return } #endregion Find FFMpeg $t = $accumulate.Count $c = 0 $TopProgId = Get-Random :nextFile foreach ($in in $accumulate) { foreach ($kv in $in.GetEnumerator()) { $ExecutionContext.SessionState.PSVariable.Set($kv.Key, $kv.Value) } $c++ $p = $c * 100 / $t Write-Progress "Converting Media" "$InputPath -> $OutputPath" -PercentComplete $p -Id $TopProgId $ri = if ([IO.File]::Exists($InputPath)) { $InputPath } else { $ExecutionContext.SessionState.Path.GetResolvedPSPathFromPSPath($InputPath) | Get-Item -LiteralPath {$_ } | Select-Object -ExpandProperty Fullname } if ($OutputPath -match '^\.(?<extension>[^\.]+)$' -or $OutputPath -match '^(?<extension>[^\.]+)$') { $fi = [IO.FileInfo]$ri $OutputPath = $ri.Substring(0, $ri.Length - $fi.Extension.Length) + $( ('.' + $Matches.extension) -replace '\.+', '.' ) } $uro = $ExecutionContext.SessionState.Path.GetUnresolvedProviderPathFromPSPath($OutputPath) $mi = Get-Media -InputPath $ri $ffmpegParams = @() $filterParams = @() $audioStreams = @($mi.Streams | Where-Object Codec_Type -eq 'Audio') $theDuration = $mi.Duration if ($Start -or $end){ if (-not $Start) { $start = [TimeSpan]::FromMilliseconds(0) } if (-not $end) { $end = $theduration } $theduration = $end - $Start } #region Handle Extensions Use-RoughDraftExtension -CommandName $myCmd -CanRun -ExtensionParameter $in | . Use-RoughDraftExtension -Run | . { process { $inObj = $_ if ($inObj.ExtensionOutput) { Write-Verbose "Adding Filter Parameters from Extension '$extensionCommand'" Write-Verbose "$extensionOutput" $FilterParams += $extensionOutput } if ($inObj.Done) { continue nextFile } } } #endregion Handle Extensions $myAudioStreamIndex = -1 for ($i = 0; $i -lt $audioStreams.Count; $I++) { if ($audioStreams[$i].Tags.language -and $audioStreams[$i].Tags.language.Contains($culture.ThreeLetterISOLanguageName.ToLower())) { $myAudioStreamIndex = $i + 1 } } if ($AudioStreamIndex -ge 0) { $myAudioStreamIndex = $audioStreamIndex } elseif ($myAudioStreamIndex -ge 0) { $AudioStreamIndex = $myAudioStreamIndex } if ($myAudioStreamIndex -eq -1 -and $audioStreams.Count -gt 1 -and $AudioStreamIndex -lt 0) { Write-Warning "More than one audio stream was found, and a default could not be selected based off of the current culture. Use -AudioStreamIndex" return } elseif ($AudioStreamIndex -ge 0) { $filterParams += "-map", "0:0" # Use default video stream $filterParams += "-map", "0:$AudioStreamIndex" } if ($codec -or $audioCodec -or $VideoCodec) { # If we supplied codecs, if (-not $script:CachedCodecList) { # cache a list of available codec if we have not done this already. $script:CachedCodecList = Get-FFMpeg -ListCodec } $codecList = $script:CachedCodecList } if ($Codec) { # If we've supplied a -Codec $matchingCodec = $codecList | Where-Object {$_.Codec -like $codec -or $_.FullName -like $codec } | Select-Object -First 1 # find it in the codec list. if (-not $matchingCodec) { # If we didn't find it, error out. Write-Error "Codec not found. Try one of the following items $($codecList | Where-Object {$_.CanEncode } | Select-Object Codec, Fullname | Out-String)" return } $ffmpegParams += "-c" # If we did find the codec, add '-c' and the name of the codec to the ffmpeg parameters. $ffmpegParams += "$($matchingCodec.Codec)" } $TimeFrame =@() if ($Start -and $start.TotalMilliseconds -ge 0) { # If we were provided a start time $TimeFrame += '-ss' # Use -ss. $TimeFrame += "$Start" } if ($End -and $end.TotalMilliseconds -ge 0) { # If we were provided an end if (-not $PSBoundParameters.Start -and -not ($Loop -or $LoopCount)) { # if we didn't get a start and we're not looping $TimeFrame += '-ss' $TimeFrame += "$([Timespan]::FromMilliseconds(0))" # set start to 0 } $TimeFrame += '-to' # then use '-to' to set the end time. $TimeFrame += "$End" } if ($PSBoundParameters.VideoFrameCount) { # If we were provided a frame count $timeFrame += "-vframes" # Use -vframes. $timeFrame += "$VideoFrameCount" } if ($PixelFormat) { # If we were provided a pixel format # use the -pix_fmt to specify it. $filterParams += '-pix_fmt', $PixelFormat } if ($VideoFilter) { # If any other video filters were passed foreach ($vf in $VideoFilter) { $filterParams += '-vf' # add them to '-vf' $filterParams += "`"$($vf.Trim('"'))`"" } } if ($MetaData) { # If -MetaData was passed foreach ($kv in $metaData.GetEnumerator()) { $filterParams += "-metadata" # set it with the -metadata parameter. $filterParams+= "`"$($kv.Key)`"=`"$($kv.Value)`"" } } if ($FrameRate) { # If -FrameRate was passed $ffmpegParams += "-r" # use '-r' to set it. $ffmpegParams += "$FrameRate" } if ($CopyAudio) { # If we indicated we were going to copy audio $ffmpegParams += "-c" # pass '-c' 'a:copy' $ffmpegParams += "a:copy" } if ($AudioFilter) { # If any additional audio filters were passed foreach ($af in $AudioFilter) { $filterParams += '-af' # pass them to -af $filterParams += "`"$($af.Trim('"'))`"" } } if ($audioCodec) { # If we provided an audio codec try to find a match $matchingCodec = $codecList | Where-Object {$_.Codec -like $AudioCodec -or $_.FullName -like $AudioCodec } | Select-Object -First 1 if ($matchingCodec) { # If we did, pass the short name to -acodec $filterParams += "-acodec" $filterParams += "$($matchingCodec.Codec)" } else { $filterParams += "-acodec" # otherwise, pass whatever the user put in. $filterParams += "$audioCodec" } } if ($VideoCodec) { # If we provided an video codec try to find a match $matchingCodec = $codecList | Where-Object {$_.Codec -like $AudioCodec -or $_.FullName -like $AudioCodec } | Select-Object -First 1 if ($matchingCodec) { # If we did, pass the short name to -vcodec $filterParams += "-c:v" $filterParams += "$($matchingCodec.Codec)" } else { $filterParams += "-c:v" # otherwise, pass whatever the user put in. $filterParams += "$VideoCodec" } } if ($AudioBitrate) { # If we provided an audio bitrate $filterParams += "-b:a" # don't forget to add that. $filterParams += "$audioBitrate" } if ($AudioChannelCount) { # If we have provided an audio channel count $filterParams += "-ac" # use -ac to pass it along. $filterParams += "$AudioChannelCount" } $filterParams += "-threads" # Add threads 0 $filterParams += "0" $FirstParams = @() if ($Loop -or $LoopCount) { # If we're going to loop it. $firstParams += "-stream_loop" $firstParams += if ($LoopCount -ge 0) { $LoopCount } else { 1 } } if ($uro -like "*.mp4") { # If we're encoding .mp4, use -movflags faststart. $filterParams += '-movflags', 'faststart' } $ProgId = Get-Random Write-Verbose "FFMpeg Arguments: -i $ri $($filterParams -join ' ') $($TimeFrame -join ' ') $uro -y $($ffmpegParams -join ' ')" $lines =@() & $ffmpeg @FirstParams -i $ri @filterParams @TimeFrame $uro -y @ffmpegParams 2>&1 | . { process { $line = $_ $lines += $line $progress = $line | & ${?<FFMpeg_Progress>} -Extract if ($progress -and $progress.Time.Totalmilliseconds -and $theDuration.TotalMilliseconds ) { $perc = $progress.Time.TotalMilliseconds * 100 / $theDuration.TotalMilliseconds $frame, $speed, $bitrate = $progress.FrameNumber, $progress.Speed, $progress.Bitrate if ($perc -gt 100) { $perc = 100 } $progressMessage = @("$($progress.Time)".Substring(0,8), "$theDuration".Substring(0,8) -join '/' "Frame: $frame","Speed $speed","Bitrate $bitrate" -join ' - ' ) -join ' ' $timeLeft = $theDuration - $progress.Time Write-Progress "$ri -> $uro" $progressMessage -PercentComplete $perc -Id $ProgId -SecondsRemaining $timeLeft.TotalSeconds } Write-Verbose "$line" } end { Write-Progress "$ri -> $uro" " " -Completed -Id $progId } } Get-Item -ErrorAction SilentlyContinue -Path $uro } Write-Progress "Converting Media" " " -Completed -Id $TopProgId } } |