Image Alt Text: "After downloading a 2.5GB movie
Me: Presses play Movie unsupported file" A person is shown with eyes on her laptop punching the wall beside her, causing it to crack.
VLC works most of the time. That said some videos VLC can't seem to decode correctly - I never get VLC complaining about unsupported file formats, but I do get weird artifacts and glitched rendering when I try to play certain ones.
It's then that I usually try MPV or MPlayer. One of those will usually play the video correctly.