I downloaded videos from YT. The videos all download in mp4. None of them
played on any of my players (WMP, RealPlayer, NeroShowTime, or Nero Kwik Media, even though the last two should. I can't even import them into Nero 12, which is compatible with mp4. I downloaded two video converters (Freemake and Prism), and converted them, but the vids have no audio.