合并文件夹内的所有视频文件

concat.ps1

Param ($order = $(throw "Order parameter is required"))

$outfile = "【22春】9年级新思维精讲-第{0}节课.mp4" -f $order
$listfile = "list.txt"

New-Item -Force $listfile

Get-ChildItem -Name *.flv | ForEach-Object {
  $tmp = "file './{0}'" -f $_
  Add-Content -Path $listfile -Value $tmp
}

ffmpeg -y -f concat -safe 0 -i $listfile -c copy $outfile

Remove-Item $listfile