Mplayer is a video player that supports multiple video formats.
Install
Arch:
sudo pacman -S mplayer
debian/ubuntu
sudo apt install mplayer
usage
To start a video type:
mplayer $path
Simple keybindings.
f #for full-screen
q #to quit
0 #for volume up
9 #for volume down
right #forward 10 seconds
left #backwards 10 seconds
up #forward 1 minute
down #backward 1 minute
p/space #pause, press again for unpause