I've created a powershell script to convert a directory of image files to png, create both an original and thumbnail image with the correct guid and filename. I was then able to see the files in the new teams.
# Install the necessary .NET namespace
Add-Type -AssemblyName System.Drawing
# Import the necessary .NET namespace
Add-Type -AssemblyName System.Drawing
# Dummy function to satisfy the GetThumbnailImage method
function dummyCallback { return $false }
# Define the folder containing the image files
$sourceFolder = "C:\Path\To\Source\Images"
# Define the folder to save the converted images
$destinationFolder = "C:\Path\To\Destination"
# Loop through each image file in the source folder
Get-ChildItem -Path $sourceFolder -File | ForEach-Object {
# Generate a GUID for the new image name
$guid = [guid]::NewGuid().ToString()
# Create a .NET Bitmap object from the image file
$originalImage = [System.Drawing.Image]::FromFile($_.FullName)
# Save the image as a PNG with a GUID-based name
$originalImage.Save("$destinationFolder\$guid.png", [System.Drawing.Imaging.ImageFormat]::Png)
# Create a thumbnail image
$thumbWidth = 278
$thumbHeight = 159
$thumbnailImage = $originalImage.GetThumbnailImage($thumbWidth, $thumbHeight, [System.Drawing.Image+GetThumbnailImageAbort]$dummyCallback, [System.IntPtr]::Zero)
# Save the thumbnail image as a PNG with a GUID-based name and "_thumb" suffix
$thumbnailImage.Save("$destinationFolder\$guid`_thumb.png", [System.Drawing.Imaging.ImageFormat]::Png)
# Dispose of the image objects to free resources
$originalImage.Dispose()
$thumbnailImage.Dispose()
}
@Steve Prentice So I'm not hosting these images in an Azure blob. What I implemented in my environment was deploying this as an Intune Win32 App and using PowerShell scripts to Install, Uninstall and Detect the correct files are placed in both the Old Teams Background directory and the New Teams. Since our org are still on a mix of both app variants. As far as wanting to update images, what you can do is when their are new images you can just create a new Intune App with the new photos whenever you have new images to upload. The GUID is a unique identifier so different images won't have the same GUID.
If anyone would like to go that route, below is what I setup.
- I have a directory with the install/uninstall/detection Scripts and a folder called bg that contains all the background images, you can place as many as you want.
- Using the IntuneWinAppUtil.exe I package all the files for creating the app on Intune
- When creating the app I used these Install/Uninstall commands
- Install:
%SystemRoot%\sysnative\WindowsPowerShell\v1.0\powershell.exe -executionpolicy bypass -command .\install.ps1 - Uninstall:
%SystemRoot%\sysnative\WindowsPowerShell\v1.0\powershell.exe -executionpolicy bypass -command .\uninstall.ps1
- Install:
Below are the scripts for this app:
install.ps1
$PackageName = "Teams-Backgrounds"
$Version = "1"
$Path_4Log = "$ENV:LOCALAPPDATA\_MEM"
Start-Transcript -Path "$Path_4Log\Log\$PackageName-install.log" -Force
$ErrorActionPreference = "Stop"
try{
# Local folder
$TeamsBG_Folder = "$env:APPDATA\Microsoft\Teams\Backgrounds\Uploads"
$TeamsBG_Folder_New = "$env:LOCALAPPDATA\Packages\MSTeams_8wekyb3d8bbwe\LocalCache\Microsoft\MSTeams\Backgrounds\Uploads"
# Ensure the folder is present
New-Item -ItemType directory -Path $TeamsBG_Folder -Force
# Copy backgrounds
New-Item -ItemType directory -Path $TeamsBG_Folder_New -Force
Copy-Item -path ".\bg\*" -Destination $TeamsBG_Folder_New -Recurse -Force
Copy-Item -path '.\bg\*' -Destination $TeamsBG_Folder -Recurse -Force
# Validation File
New-Item -Path "$Path_4Log\Validation\$PackageName" -ItemType "file" -Value $Version -Force
}catch{
Write-Host "_____________________________________________________________________"
Write-Host "ERROR"
Write-Host "$_"
Write-Host "_____________________________________________________________________"
}
Stop-Transcript
uninstall.ps1
$PackageName = "Teams-Backgrounds"
$Path_4Log = "$ENV:LOCALAPPDATA\_MEM"
Start-Transcript -Path "$Path_4Log\Log\$PackageName-uninstall.log" -Force
$TeamsBG_Folder = "$env:APPDATA\Microsoft\Teams\Backgrounds\Uploads"
$TeamsBG_Folder_New = "$env:LOCALAPPDATA\Packages\MSTeams_8wekyb3d8bbwe\LocalCache\Microsoft\MSTeams\Backgrounds\Uploads"
$TeamsBG_Files = Get-ChildItem -Path '.\bg' -Name
# Delete distributed backgrounds
Get-ChildItem $TeamsBG_Folder_New | Where{$_.Name -in $TeamsBG_Files} | Remove-Item
Get-ChildItem $TeamsBG_Folder | Where{$_.Name -in $TeamsBG_Files} | Remove-Item
# Delete detection file
Remove-Item -Path "$Path_4Log\Validation\$PackageName" -Force
Stop-Transcript
check.ps1
$PackageName = "Teams-Backgrounds"
$Version = "1"
$Path_4Log = "$ENV:LOCALAPPDATA\_MEM"
$ProgramVersion_current = Get-Content -Path "$Path_4Log\Validation\$PackageName"
if($ProgramVersion_current -eq $Version){
Write-Host "Found it!"
}
I hope this helps anyone looking for an alternative way to deploy teams backgrounds.