1. The installation methods of CentOS 6 and 7 are different, as follows:
Before installation, you need to install the epel extension source first
yum -y install epel-release
CentOS 6 is relatively simple, you can install it directly after installing the yum source:
su -c 'yum localinstall --nogpgcheck https://download1.rpmfusion.org/free/el/rpmfusion-free-release-6.noarch.rpm https://download1.rpmfusion.org/nonfree/el/rpmfusion-nonfree-release-6.noarch.rpm'
yum -y install ffmpeg ffmpeg-devel
And CentOS 7 needs to install additional extension sources:
su -c 'yum localinstall --nogpgcheck https://download1.rpmfusion.org/free/el/rpmfusion-free-release-7.noarch.rpm https://download1.rpmfusion.org/nonfree/el/rpmfusion-nonfree-release-7.noarch.rpm'
rpm --import http://li.nux.ro/download/nux/RPM-GPG-KEY-nux.ro
rpm -Uvh http://li.nux.ro/download/nux/dextop/el7/x86_64/nux-dextop-release-0-1.el7.nux.noarch.rpm
yum -y install ffmpeg ffmpeg-devel
2. Transfer to HLS
/usr/bin/ffmpeg -i 3.wmv -c:v libx264 -c:a aac -strict -2 -f hls -hls_list_size 0 -hls_time 5 3/3.m3u8
Move 3.wmv to the 3 directory (choose to create a directory), the index file name is 3.m3u8
4. Convert to mp4
/usr/bin/ffmpeg -i 3.wmv -c:v libx264 -c:a aac -s 720x480 -y -strict -2 3.mp4