A small powershell script to allow to record and play back a part of your screen with VLC to allow partial screen sharing in communication tools like Teams.

Share-PartialScreen.ps1

function Share-PartialScreen {
    [CmdletBinding(DefaultParameterSetName='Preset')]
    Param(
        [Parameter(Mandatory = $false)]
        [string] $preset,
        [Parameter(Mandatory = $false)]
        [int] $Width = 1920,
        [Parameter(Mandatory = $false)]
        [int] $Height = 1080
    )

    switch ($preset) {
        "720p" { 
            $Width = 1280
            $Height = 720
        }
        "1080p" { 
            $Width = 1920
            $Height = 1080
        }
    }

    $id = Start-Process -FilePath "C:\Program Files\VideoLAN\VLC\vlc.exe" -ArgumentList "screen:// --screen-fps=30 --live-caching=300 --screen-width=$Width --screen-height=$Height --no-embedded-video --no-video-deco --qt-start-minimized" -PassThru

    [reflection.assembly]::LoadWithPartialName( "System.Windows.Forms")
    [reflection.assembly]::LoadWithPartialName( "System.Drawing")

    $pen = New-Object Drawing.Pen red
    $brushRed = New-Object Drawing.SolidBrush red
    $brushWhite = New-Object Drawing.SolidBrush white
    $font = New-Object Drawing.Font "Arial", 14

    $form = New-Object Windows.Forms.Form
    $form.TransparencyKey = $form.BackColor
    $form.WindowState = 'Maximized'
    $form.FormBorderStyle = 'None'
    $form.TopMost = $true

    $formGraphics = $form.createGraphics()

    $form.add_paint(
        {
            $formGraphics.DrawRectangle($pen, 0, 0, $Width + 1, $Height + 1)
            $formGraphics.FillRectangle($brushRed, $Width + 1, 0, 60, 30)
            $formGraphics.DrawString("close", $font, $brushWhite, $Width + 5, 3)
        }
    )

    $form.Add_Click({$form.Close()})
    $form.ShowDialog()   # display the dialog

    Stop-Process $id
}

U da real MVP - (Microsoft valuable partner :) ) for creating this - saves my life on teams widescreen

I also appreciate this script. I often share the screen in our developer Teams video conferences and I had trouble sharing the entire desktop with the purchase of a widescreen.

Tried your script today, but the shared screen just stays black on the other side. I see mouse movement, but other than that just black.

Any ideas? Thank you!

Tried your script today, but the shared screen just stays black on the other side. I see mouse movement, but other than that just black.

Any ideas? Thank you!

Sounds like an issue with the screen recording in VLC, maybe you tried to share a window that is not capturable (like DRM protected video files)? Or maybe you accidentally arranged the (at the beginning) empty VLC playback window (the one you select to share) in away you are recoding the playback window again and it stayed black? Try moving another window over it, but you should have seen some mouse ghost images if the playback window is reshared, as it results in some kind of infinity mirror like.

You can add --screen-left and --screen-top to VLC start command to record your screen with an offset. But you have also translate "Paint" operations to that offset.