一：ffmpeg 最新yum源

    cat /etc/yum.repo.d/atrpms.repo

    [atrpms]

    name=Red Hat Enterprise Linux $releasever - $basearch - ATrpms

    failovermethod=priority

    baseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable

    enabled=1

    gpgcheck=0

    gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-atrpms

    [163]

    name=163repo

    baseurl=http://mirrors.163.com/centos/6/os/x86_64/

    enabled=1

    gpgcheck=0

二：视频去除logo

    要根据源视频的分辨率大小，调整delogo的坐标。

    ffmpeg -i tuxiaobei001.mp4 -vf delogo=1150:660:170:60:4:0 -s 1920x1080 -strict -2 -vcodec libx264 -r 25 -b 500k  -acodec aac -ac 2 -ar 24000 -ab 125k test.mp4

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