https://www.smplayer.info/

1. A quick look at SMPlayer

SMPlayer is a free media player for Windows and Linux with built-in codecs that can play virtually all video and audio formats. It doesn’t need any external codecs. Just install SMPlayer and you’ll be able to play all formats without the hassle to find and install codec packs.

SMPlayer 是个适用于 Windows and Linux 的免费媒体播放器，内置解码器，可以播放几乎所有格式的视频和音频文件。无需再安装任何外部解码器。只要安装了 SMPlayer，你就能够播放所有的格式，不用再费事查找安装解码包。

2. Downloads

You can find here packages for Windows and Linux:

https://www.smplayer.info/en/downloads
https://www.smplayer.info/zh/downloads

2.1. Packages for Ubuntu

To install SMPlayer, just run these commands in a terminal (Packages built with Qt 4):

sudo add-apt-repository ppa:rvm/smplayer 
sudo apt-get update 
sudo apt-get install smplayer smplayer-themes smplayer-skins 

strong@foreverstrong:~$ sudo add-apt-repository ppa:rvm/smplayer
[sudo] password for strong: Packages for SMPlayer.To install SMPlayer from this PPA, run these commands on a terminal:sudo add-apt-repository ppa:rvm/smplayer 
sudo apt-get update 
sudo apt-get install smplayer smtube smplayer-themes smplayer-skinsMore info: https://launchpad.net/~rvm/+archive/ubuntu/smplayer
Press [ENTER] to continue or ctrl-c to cancel adding it
......
strong@foreverstrong:~$ sudo apt-get update
strong@foreverstrong:~$ sudo apt-get install smplayer smplayer-themes smplayer-skins
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
......
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
......

References

[1] Yongqiang Cheng, https://yongqiang.blog.csdn.net/