4k Remux Movies [better] Here

Think about your music library. Do you regret ripping your CDs to 128kbps MP3s in 2005? Yes. You cannot un-compress a file. By keeping 4K REMUX files, you are ready for future upscaling algorithms and better displays. You can always compress a REMUX down later, but you cannot go back up.

Use MakeMKV (free while in beta). Select the largest .m2ts playlist (the main movie), choose your audio tracks (English TrueHD/Atmos + AC3 core for compatibility), and subtitles. Hit "Make MKV." Wait 20-40 minutes. 4k remux movies

However, a 4K REMUX from a public torrent site or Usenet is almost certainly illegal in the US, UK, and EU, as it constitutes copyright infringement. Think about your music library