Public/Start-TranscodeMap.ps1

function Start-TranscodeMap {
    <#
    .DESCRIPTION
    Allows specifying up to 5 streams to include in a transcode file
 
    .PARAMETER video
    Specify Video Input
 
    .PARAMETER crf
    Default is set to 21. Use this parameter to change it to another value.
 
    .PARAMETER m1
    Specify a stream to include
 
    .PARAMETER m2
    Specify an optional 2nd stream to include
 
    .PARAMETER m3
    Specify an optional 3rd stream to include
 
    .PARAMETER m4
    Specify an optional 4th stream to include
 
    .PARAMETER m5
    Specify an optional 5th stream to include
 
    .Example
    Includes streams 0, 2, and 5 from the file movie.mkv and transcodes with a crf of 23
 
    Start-TranscodeStreams -video .\movie.mkv -m1 0:0 -m2 0:2 -m3 0:5 -crf 23
 
    .Link
    https://github.com/TheTaylorLee/AdminToolbox
    #>

    [cmdletbinding()]
    [Alias('TranscodeMap')]
    param (
        [Parameter(Mandatory = $true)]
        $video,
        [Parameter(Mandatory = $true)]
        $m1,
        [Parameter(Mandatory = $false)]
        $m2,
        [Parameter(Mandatory = $false)]
        $m3,
        [Parameter(Mandatory = $false)]
        $m4,
        [Parameter(Mandatory = $false)]
        $m5,
        [Parameter(Mandatory = $false)]$crf = 21
    )

    if ($env:FFToolsSource -and $env:FFToolsTarget) {
        #modify the video parameter to use an mkv extension for the outfile parameter
        $video2 = $video.Split('\')
        $video3 = $video2 | Select-Object -Last 1
        $video4 = $video3 -replace ".{4}$"
        $videoout = $video4 + ".mkv"

        #Run ffmpeg
        if ($m5) {
            ffmpeg.exe -i "$video" -map $m1 -map $m2 -map $m3 -map $m4 -map $m5 -c:v libx265 -crf $crf -ac 6 -c:a aac -preset veryfast "$env:FFToolsTarget$videoout"
        }
        elseif ($m4) {
            ffmpeg.exe -i "$video" -map $m1 -map $m2 -map $m3 -map $m4 -c:v libx265 -crf $crf -ac 6 -c:a aac -preset veryfast "$env:FFToolsTarget$videoout"
        }
        elseif ($m3) {
            ffmpeg.exe -i "$video" -map $m1 -map $m2 -map $m3 -c:v libx265 -crf $crf -ac 6 -c:a aac -preset veryfast "$env:FFToolsTarget$videoout"
        }
        elseif ($m2) {
            ffmpeg.exe -i "$video" -map $m1 -map $m2 -c:v libx265 -crf $crf -ac 6 -c:a aac -preset veryfast "$env:FFToolsTarget$videoout"
        }
        else {
            ffmpeg.exe -i "$video" -map $m1 -c:v libx265 -crf $crf -ac 6 -c:a aac -preset veryfast "$env:FFToolsTarget$videoout"
        }
    }

    else {
        Write-Warning "You must first run Set-FFToolsVariables! This is only required once."
    }
}