How to rename files by date with PowerShell including characters between it

Question

Good afternoon: First of all, note that I'm very new to this, so maybe I don't express myself as I should, I hope you understand me. I am trying to bulk rename a folder of images and videos based on the date they were taken. For now, this is the "expression" I'm using:

Get-ChildItem | Rename-Item -NewName {$.LastWriteTime.ToString("yyyy-MM-dd hh.mm.ss") + ($.Extension)}

With it, I get any file to be renamed in a way similar to the following:

2023-05-27_18.19.15

However, I would like to use te EXIF date of te JPGs instead of last write time, and the name to be the following:

2023-05-27_18h19m15

Thank you for your help.

Answer 1

Getting the EXIF data from a file isn't that easy. For something simple, start with this code to find the exif property "Date Taken" (it's probably #12). Then modify the code a bit to just get that single property and format it the way you want it to look.

function Get-FileMetaData{
    param(
        [Parameter(Mandatory=$True)]
        [string]$File
    )
    if(!(Test-Path -Path $File)){
        throw "File does not exist: $File"
        Exit 1
    }
    $tmp = Get-ChildItem $File
    $pathname = $tmp.DirectoryName
    $filename = $tmp.Name
    try{
        $shellobj = New-Object -ComObject Shell.Application
        $folderobj = $shellobj.namespace($pathname)
        $fileobj = $folderobj.parsename($filename)
        for($i=0; $i -le 321; $i++){
            $name = $folderobj.getDetailsOf($null, $i)
            if($name){
                $value = $folderobj.getDetailsOf($fileobj, $i)
                if($value){
                    "{0}`t{1} {2} {3}" -f $i,$name,('.' * 30),$value
                }
            }
        }
    }finally{
        if($shellobj){
            [System.Runtime.InteropServices.Marshal]::ReleaseComObject([System.__ComObject]$shellobj) | out-null
        }
    }
}