using VLC to convert mpg/mov files into mp4 and copy all the rest

copy_convert.ps1

####
# if mp4a audio is not working, open VLC and go to 
#    Tools > Preferences > Input/Codecs > Video codecs > FFmpeg
# and change 
#    Strict standard compliance
# to 
#    -2  
####

Param(
	[string]$if,
	[string]$of = $if + "_converted",
	[switch]$help = $false
)

$VLC_EXE = $env:ProgramFiles + "\VideoLAN\VLC\vlc.exe"
$BITRATE = 64
$OVERWRITE_CREATION_TIME = $true

function Print-Help() {
"
This script will convert all .mpg and .mov files in specified directory to .mp4 and copy all other files

Parameters:
   -if      Input folder [required] folder in which scipt will search for fiels and will make copy or convert
   -of      Output folder [optional, default `"{if}_convert`"] taget folder to which script will save copied/converted files
   -help    Print out this help message


if mp4a audio is not working, open VLC and go to 
    Tools > Preferences > Input/Codecs > Video codecs > FFmpeg
and change 
    Strict standard compliance
to 
    -2  
"
}

function Video-Convert {
	Param(
		[System.IO.FileInfo]$file,
		[System.IO.DirectoryInfo]$saveDir,
		[switch]$deinterlace = $false
	)
	"converting      " + $file.FullName
	
	$extraTranscodeArgs = ""
	if ($deinterlace) {
		$extraTranscodeArgs += ",deinterlace=`"1`""
	}
	
	$outputFileName = Join-Path -Path $saveDir -ChildPath ($file.BaseName + ".mp4")
	
	$args = "-I dummy -vvv `"$($file.FullName)`" --sout-ffmpeg-strict=-2 --sout=#transcode{vcodec=`"h264`",acodec=`"aac`",ab=`"$BITRATE`"$($extraTranscodeArgs)}:standard{access=`"file`",mux=`"mp4`",dst=`"$outputFileName`"} vlc://quit"

	Start-Process $VLC_EXE $args -Wait
	
	$outFile = Get-Item $outputFileName
	$outFile.LastWriteTime = $file.LastWriteTime
	if ($OVERWRITE_CREATION_TIME) {
		$outFile.CreationTime = $file.LastWriteTime
	}
}

function Handle-Dir([System.IO.DirectoryInfo]$inDir, [System.IO.DirectoryInfo]$outDir) {
	foreach($file in $inDir.GetFileSystemInfos()) {
		if ($file.getType() -eq [System.IO.DirectoryInfo]) {
			Handle-Dir -inDir $file -outDir $outDir.CreateSubdirectory($file.BaseName)
		} else {
			Handle-File -file $file -saveDir $outDir
		}
	}
}

function Handle-File([System.IO.FileInfo]$file, [System.IO.DirectoryInfo]$saveDir) {
	switch($file.Extension) {
		".jpg" {
			Handle-JPG -file $file -saveDir $saveDir
		}
		".mov" {
			Handle-MOV -file $file -saveDir $saveDir
		}
		".mpg" {
			Handle-MPG -file $file -saveDir $saveDir
		}
		default {
			Handle-UnknownFile -file $file -saveDir $saveDir
		}
	}
}

function Handle-UnknownFile([System.IO.FileInfo]$file, [System.IO.DirectoryInfo]$saveDir) {
	"copying         " + $file.FullName
	Copy-Item -Path $file.FullName -Destination $saveDir
	if ($OVERWRITE_CREATION_TIME) {
		(Get-Item (Join-Path -Path $saveDir -ChildPath ($file.Name))).CreationTime = $file.LastWriteTime
	}
}

function Handle-JPG([System.IO.FileInfo]$file, [System.IO.DirectoryInfo]$saveDir) {
	Handle-UnknownFile -file $file -saveDir $saveDir
}

function Handle-MOV([System.IO.FileInfo]$file, [System.IO.DirectoryInfo]$saveDir) {
	Video-Convert -file $file -saveDir $saveDir
}

function Handle-MPG([System.IO.FileInfo]$file, [System.IO.DirectoryInfo]$saveDir) {
	Video-Convert -file $file -saveDir $saveDir -deinterlace
}

if (!$if -or $help) {
	Print-Help
	exit
}

if (!(Test-Path -Path $if) -or !((Get-Item $if).Attributes -match "directory")) {
	"input is not correct"
	exit
}

if (Test-Path -Path $of) {
	"WARNING " + $output + " already exists, remove it first"
	exit
}

if (!(Test-Path -Path $VLC_EXE)) {
	"please check VLC path"
	exit
}

$input = Get-Item $if
$output = New-Item -Path $of -ItemType "directory"
"we have the dir: " + $input.FullName
"saving converted to: " + $output.FullName

Handle-Dir -inDir $input -outDir $output