Windows Powershell FFMPEG ps1 script to split video into chunks

split_video.ps1

# Usage: .\split_video.ps1 -inputFile "input.mp4" -numSplits 4

param (
    [string]$inputFile,  # Input MP4 file
    [int]$numSplits      # Number of parts
)

# Check if ffprobe and ffmpeg are installed
$ffprobe = Get-Command ffprobe -ErrorAction SilentlyContinue
$ffmpeg = Get-Command ffmpeg -ErrorAction SilentlyContinue

if (-not $ffprobe -or -not $ffmpeg) {
    Write-Host "Error: ffmpeg and ffprobe must be installed and in your system's PATH." -ForegroundColor Red
    exit 1
}

# Get the filename without extension
$baseName = [System.IO.Path]::GetFileNameWithoutExtension($inputFile)

# Get the duration of the video
$duration = & ffprobe -i $inputFile -show_entries format=duration -v quiet -of csv="p=0"
$duration = [math]::Round([double]$duration, 2)

# Calculate segment duration
$segmentDuration = [math]::Round($duration / $numSplits, 2)

Write-Host "Video Duration: $duration seconds"
Write-Host "Splitting into $numSplits parts, each part will be $segmentDuration seconds long."

# Split the video
for ($i = 0; $i -lt $numSplits; $i++) {
    $startTime = [math]::Round($i * $segmentDuration, 2)
    $outputFile = "$baseName`_part$($i+1).mp4"

    Write-Host "Creating $outputFile (Start: $startTime sec, Duration: $segmentDuration sec)"
    
    & ffmpeg -i $inputFile -ss $startTime -t $segmentDuration -c copy $outputFile
}

Write-Host "Splitting complete!" -ForegroundColor Green