It’s important to start with a clear : ArcSoft TotalMedia 3.5 is a legacy software product from the late 2000s / early 2010s. ArcSoft no longer exists as an independent company (it was acquired and dissolved). There is no official, legal “free” version of TotalMedia 3.5 from 2021. Any website offering a “free 2021” download is almost certainly unofficial and potentially dangerous.