# 将 web\promotion\social 下产品视频从 .mov 转为网页通用 .mp4（H.264 + AAC，faststart）
# 依赖：已安装 ffmpeg 并在 PATH 中（Windows: https://www.gyan.dev/ffmpeg/builds/ 或 winget install ffmpeg）

$ErrorActionPreference = "Stop"
$Root = Split-Path -Parent $PSScriptRoot
$Dir = Join-Path $Root "web\promotion\social"

$ffmpeg = Get-Command ffmpeg -ErrorAction SilentlyContinue
if (-not $ffmpeg) {
    Write-Host "未找到 ffmpeg。请安装并加入 PATH：https://ffmpeg.org/download.html" -ForegroundColor Red
    exit 1
}

$files = @(
    "video-calc-demo-1.mov",
    "video-calc-demo-2.mov",
    "video-aiword.mov",
    "video-voice-office.mov",
    "video-invoice-ai.mov"
)

foreach ($f in $files) {
    $src = Join-Path $Dir $f
    $base = [System.IO.Path]::GetFileNameWithoutExtension($f)
    $dst = Join-Path $Dir "$base.mp4"
    if (-not (Test-Path -LiteralPath $src)) {
        Write-Host "[跳过] 无源文件: $src" -ForegroundColor Yellow
        continue
    }
    Write-Host "[转码] $src -> $dst"
    & ffmpeg -y -i $src `
        -c:v libx264 -profile:v high -pix_fmt yuv420p `
        -c:a aac -b:a 128k `
        -movflags +faststart `
        $dst
    if ($LASTEXITCODE -ne 0) { exit $LASTEXITCODE }
    Write-Host "[完成] $dst" -ForegroundColor Green
}

Write-Host "全部处理结束。请部署生成的 .mp4；确认后可删除本地 .mov（可选）。" -ForegroundColor Cyan