#include <Array.au3>
#include <File.au3>

If MsgBox(4,"","Fortfahren?") = 7 Then Exit

$files = _GetFilesFolder_Rekursiv(@ScriptDir)

For $i = 1 To $files[0] Step 1
   If StringInStr($files[$i],".jpg") Or StringInStr($files[$i],".png") Or StringInStr($files[$i],".avi") Or StringInStr($files[$i],".mp4") Then
      FileDelete($files[$i])
   EndIf
Next

MsgBox(0,"Fertig","Fertig, Maru")

Func _GetFilesFolder_Rekursiv($sPath, $sExt='*', $iDir=-1, $iRetType=0, $sDelim='0')
    Global $oFSO = ObjCreate('Scripting.FileSystemObject')
    Global $strFiles = ''
    Switch $sDelim
        Case '1'
            $sDelim = @CR
        Case '2'
            $sDelim = @LF
        Case '3'
            $sDelim = ';'
        Case '4'
            $sDelim = '|'
        Case Else
            $sDelim = @CRLF
    EndSwitch
    If ($iRetType < 0) Or ($iRetType > 1) Then $iRetType = 0
    If $sExt = -1 Then $sExt = '*'
    If ($iDir < -1) Or ($iDir > 1) Then $iDir = -1
    _ShowSubFolders($oFSO.GetFolder($sPath),$sExt,$iDir,$sDelim)
    If $iRetType = 0 Then
        Local $aOut
        $aOut = StringSplit(StringTrimRight($strFiles, StringLen($sDelim)), $sDelim, 1)
        If $aOut[1] = '' Then
            ReDim $aOut[1]
            $aOut[0] = 0
        EndIf
        Return $aOut
    Else
        Return StringTrimRight($strFiles, StringLen($sDelim))
    EndIf
EndFunc

Func _ShowSubFolders($Folder, $Ext='*', $Dir=-1, $Delim=@CRLF)
    If Not IsDeclared("strFiles") Then Global $strFiles = ''
    If ($Dir = -1) Or ($Dir = 0) Then
        For $file In $Folder.Files
            If $Ext <> '*' Then
                If StringRight($file.Name, StringLen($Ext)) = $Ext Then _
                    $strFiles &= $file.Path & $Delim
            Else
                $strFiles &= $file.Path & $Delim
            EndIf
        Next
    EndIf
    For $Subfolder In $Folder.SubFolders
        If ($Dir = -1) Or ($Dir = 1) Then $strFiles &= $Subfolder.Path & '\' & $Delim
        _ShowSubFolders($Subfolder, $Ext, $Dir, $Delim)
    Next
EndFunc