add video files into asset library programmatically using powershell in sharepoint 2013

I want to add video files to the Asset Library programmatically using powershell and Kindly help me.i tried the below code :

 Add-PSSnapIn Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue
 $sitecollecURL ="http://sirvr1:123/sites/enggtest"
 $videoFolderPath = "C:\Myvideofolder\"
 $videoLibFiles = Get-ChildItem $videoFolderPath -Include      
 *.wmv,*.mp3,*.mp4,*.flv,*.avi -Recurse 
 Write-Host -ForegroundColor Yellow "starting to add video  item to the asset  
 library " $sitecollecURL
 $siteDiscipline = Get-SPSite $sitecollecURL

my idea is to get the different video or audio files kept in the folder and read one by one which matches the extension and upload into the assets library