Powershell script to convert video files to mp4 using ffmpeg

makemp4.ps1

<#
.SYNOPSIS
    Converts video files of various formats (e.g., MKV, AVI, MOV) to MP4 using FFmpeg.
.DESCRIPTION
    This script searches the current directory for video files with specified extensions
    and converts them to MP4 format without re-encoding (using stream copy).

    The script uses FFmpeg for conversion and suppresses detailed output during the process. 
    Any errors encountered during the conversion are logged.

.PARAMETER None
    The script doesn't require any parameters and converts all supported video files in the
    current directory to MP4.

.NOTES
    - Make sure FFmpeg is installed and available in the system's PATH.
    - The conversion uses stream copy (`-codec copy`), so the process is fast, without re-encoding.
    - Suppresses FFmpeg's output using `Out-Null`.
#>
function makemp4 {
    $extensions = @("*.mkv", "*.avi", "*.mov") # Add other extensions as needed

    # Display the supported file formats
    $formats = $extensions -replace "\*\.", "" -join ", "
    Write-Host "Supported formats: $formats"

    $videoFiles = Get-ChildItem .\* -Include $extensions
    
    if ($videoFiles.Count -eq 0) {
        Write-Host "No Video files found in the current directory."
        return
    }

    $videoFiles | ForEach-Object {
        try {
            $output = "$($_.BaseName).mp4"
            #ffmpeg -i $_.FullName -codec copy $output
            ffmpeg -i $_.FullName -codec copy $output *>&1 | Out-Null #Suppress output
            Write-Host "Converted: $($_.Name) to $output"
        }
        catch {
            Write-Host "Error converting: $($_.Name) - $_"
        }
    }
}