Export recording sequences in parallel

parallel-exports.ps1

#requires -Modules Microsoft.PowerShell.ThreadJob

<#
    This is an example of how you could parallelize exports. You _probably_ wouldn't do this specific thing in practice
    but it was an easy proof of concept on a small system.

    The following script will get all enabled cameras, and then get all recording sequences for todays date, and then
    using the Start-ThreadJob command, it will run each export in a separate job, saving each recording sequence found
    on each enabled camera to it's own MKV file in the C:\temp directory.
#>

Get-VmsCamera | Get-SequenceData -StartTime (Get-Date).Date -EndTime (Get-Date) | ForEach-Object {
    Start-ThreadJob -ArgumentList $_ -ScriptBlock {
        param($sequence)
        $ProgressPreference = 'SilentlyContinue'
        
        $exportParams = @{
            Format    = 'MKV'
            Path      = 'C:\temp\'
            Name      = '{0}_{1}.mkv' -f $sequence.EventHeader.Source.FQID.ObjectId, $sequence.EventHeader.Timestamp.Ticks
            CameraIds = $sequence.EventHeader.Source.FQID.ObjectId
            StartTime = $sequence.EventSequence.StartDateTime
            EndTime   = $sequence.EventSequence.EndDateTime
        }
        Start-Export @exportParams
        [pscustomobject]@{
            Camera    = $sequence.EventHeader.Source.Name
            Id        = $sequence.EventHeader.Source.FQID.ObjectId
            StartTime = $sequence.EventSequence.StartDateTime
            EndTime   = $sequence.EventSequence.EndDateTime
        }
    }
} | Receive-Job -Wait -AutoRemoveJob