110 lines
4.0 KiB
PowerShell
110 lines
4.0 KiB
PowerShell
<#
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.SYNOPSIS
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Download YouTube video(s) at highest quality as merged MP4.
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.DESCRIPTION
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Wraps yt-dlp with the settings needed for modern YouTube:
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- JS runtime (bun preferred; deno auto-downloaded to .\bin if missing)
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- yt-dlp (auto-downloaded to .\bin if missing)
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- ffmpeg (must be on PATH, or set -FfmpegDir)
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- cookies.txt next to this script is used automatically if present
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.EXAMPLE
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.\yt-download.ps1 "https://www.youtube.com/watch?v=xxxx"
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.EXAMPLE
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.\yt-download.ps1 URL1 URL2 URL3 -OutDir "D:\Videos"
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#>
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[CmdletBinding()]
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param(
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[Parameter(Mandatory = $true, Position = 0, ValueFromRemainingArguments = $true)]
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[string[]] $Urls,
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[string] $OutDir = (Join-Path $env:USERPROFILE 'Downloads'),
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# Override format selection if you want (e.g. H.264 only, or <=1080p)
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[string] $Format = 'bestvideo+bestaudio/best',
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# Path to ffmpeg's bin dir. Auto-detected from PATH if omitted.
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[string] $FfmpegDir = '',
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# Path to a Netscape cookies.txt. Defaults to cookies.txt beside this script.
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[string] $Cookies = ''
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)
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$ErrorActionPreference = 'Stop'
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$ScriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path
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$BinDir = Join-Path $ScriptDir 'bin'
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New-Item -ItemType Directory -Force $BinDir | Out-Null
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function Get-Tool($name, $url, $outFile) {
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$local = Join-Path $BinDir $outFile
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if (Test-Path $local) { return $local }
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$onPath = (Get-Command $name -ErrorAction SilentlyContinue)
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if ($onPath) { return $onPath.Source }
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Write-Host "[setup] downloading $name ..." -ForegroundColor Cyan
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Invoke-WebRequest -Uri $url -OutFile $local
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return $local
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}
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# --- yt-dlp ---
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$ytdlp = Get-Tool 'yt-dlp' 'https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp.exe' 'yt-dlp.exe'
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# --- JS runtime (bun preferred; deno fallback; required by YouTube) ---
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$jsRuntime = ''
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$bun = Get-Command 'bun' -ErrorAction SilentlyContinue
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if ($bun) {
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$jsRuntime = "bun:$($bun.Source)"
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} else {
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$deno = Join-Path $BinDir 'deno.exe'
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if (-not (Test-Path $deno)) {
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$onPath = Get-Command 'deno' -ErrorAction SilentlyContinue
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if ($onPath) {
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$deno = $onPath.Source
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} else {
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Write-Host "[setup] downloading deno ..." -ForegroundColor Cyan
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$zip = Join-Path $BinDir 'deno.zip'
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Invoke-WebRequest -Uri 'https://github.com/denoland/deno/releases/latest/download/deno-x86_64-pc-windows-msvc.zip' -OutFile $zip
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Expand-Archive $zip -DestinationPath $BinDir -Force
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Remove-Item $zip -Force
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}
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}
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$jsRuntime = "deno:$deno"
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}
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# --- ffmpeg ---
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if (-not $FfmpegDir) {
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$ff = Get-Command 'ffmpeg' -ErrorAction SilentlyContinue
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if ($ff) {
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$FfmpegDir = Split-Path -Parent $ff.Source
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} else {
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Write-Warning "ffmpeg not found on PATH. Install it (winget install Gyan.FFmpeg) or pass -FfmpegDir. Merging video+audio will fail without it."
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}
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}
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# --- cookies ---
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if (-not $Cookies) {
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$defaultCookies = Join-Path $ScriptDir 'cookies.txt'
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if (Test-Path $defaultCookies) { $Cookies = $defaultCookies }
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}
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New-Item -ItemType Directory -Force $OutDir | Out-Null
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$common = @(
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'--no-js-runtimes',
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'--js-runtimes', $jsRuntime,
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'-f', $Format,
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'--merge-output-format', 'mp4',
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'-o', (Join-Path $OutDir '%(title)s [%(height)sp].%(ext)s'),
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'--no-playlist'
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)
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if ($FfmpegDir) { $common += @('--ffmpeg-location', $FfmpegDir) }
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if ($Cookies) { $common += @('--cookies', $Cookies); Write-Host "[info] using cookies: $Cookies" -ForegroundColor DarkGray }
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else { Write-Host "[info] no cookies.txt -- public videos only. See SKILL.md if you hit 'Sign in to confirm you're not a bot'." -ForegroundColor DarkGray }
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$fail = 0
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foreach ($u in $Urls) {
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Write-Host "`n==== downloading: $u ====" -ForegroundColor Green
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& $ytdlp @common $u
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if ($LASTEXITCODE -ne 0) { $fail++; Write-Warning "failed: $u" }
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}
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if ($fail) { Write-Warning "$fail download(s) failed."; exit 1 }
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Write-Host "`nAll done. Saved to: $OutDir" -ForegroundColor Green
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