When comparing feh vs MPlayer, the Slant community recommends feh for most people. In the question“What are the best applications to use on a X11 window manager?” feh is ranked 9th while MPlayer is ranked 12th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Loads up images extremely fast
Pro Minimalistic
Goes well with tiling window managers.
Pro Needs no additional codecs
Everything MPlayer needs to play media files is contained within which means no outside codecs are needed.
Pro Easy shortcut keys
Quick skip ahead buttons and other shortcut keys.
Pro No bugs , no lag in the video display
Pro Works via CLI and has multiple frontends to choose from
Some of the more popular frontends include Deepin Media Player, GNOME MPlayer, KPlayer, KMPlayer, Rosa Media Player, SMPlayer and Xt7-Player.
Pro Nice theme available to choose from
Also, the video window is separate from the main window making it less cluttered while playing audio
Cons
Con Junky rescaling by default in WMs
Fixable by running these commands:
echo "alias feh='feh --scale-down --image-bg black & disown" >> ~/.bashrc
source ~/.bash_profile
But after entering those two commands for all users, feh works flawlessly, and is extremely responsive. Would definitely recommend.