Combine all MP4 files in the current directory using FFMPEG

combine-videos-mp4.ps1

# Set the working directory to the script's location
Set-Location -Path $PSScriptRoot

# Initialize an empty string to store the concatenated file list
$fileList = ""

# Define the path to files.txt
$filesTxtPath = "$PSScriptRoot\files.txt"

# Define the output file path
$outputFilePath = "$PSScriptRoot\output.mp4"

# Loop through each MP4 file in the current directory
foreach ($file in Get-ChildItem .\*.mp4) {
    # Append the current file path to the file list string with the "file" keyword
    $fileList += "file '$($file.FullName)'" + [Environment]::NewLine

    # Print a message indicating the file being processed
    Write-Host "Processing file: $($file.Name)"
}

# Write the file list string to a text file without BOM
$fileList | Out-File -FilePath $filesTxtPath -Encoding ascii

# Print a message indicating the file list has been written
Write-Host "File list written to $filesTxtPath"

# Define the ffmpeg arguments as an array
$ffmpegArgs = @(
    "-f", "concat",
    "-safe", "0",
    "-i", "`"$filesTxtPath`"",
    "-c", "copy",
    "`"$outputFilePath`""
)

# Run the ffmpeg process directly in the same window
& ffmpeg @ffmpegArgs

# Print a message indicating the concatenation process is complete
Write-Host "Concatenation process completed. Output file: $outputFilePath"

# Cleanup: Remove the log files and files.txt
Remove-Item -Path "ffmpeg_output.txt", "ffmpeg_error.txt", $filesTxtPath -ErrorAction SilentlyContinue

# Print a message indicating cleanup is complete
Write-Host "Cleanup completed. Log files and files.txt have been deleted."