centos7安装录屏软件simplescreenrecorder，安装VLC，用来观看，

干脆点：https://li.nux.ro/repos.html（教程）

yum -y install epel-release && rpm -Uvh http://li.nux.ro/download/nux/dextop/el7/x86_64/nux-dextop-release-0-5.el7.nux.noarch.rpm
解决

1.打开 http:/li.nux.ro/download/nux/dextop/el7/x86_64/nux-dextop-release-0-5.el7.nux.noarch.rpm，下

2.安装simplescreenrecorder sudo rpm -Uvh nux-dextop-release*rpm
3.sudo yum install simplescreenrecorder

在终端输入：simplescreenrecorder

问题
H.2.64 decoder is required to play the file

解决：
yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm

yum install -y https://download1.rpmfusion.org/free/el/rpmfusion-free-release-7.noarch.rpm

yum install -y vlc

yum install -y vlc-core (for minimal headless/server install)

yum install -y python-vlc npapi-vlc (optionals)
在终端输入：vlc