How to Install FFmpeg in Linux ~The Easy Way~

Original Post

FFmpeg is so important if you are planning to run a video website with streaming with conversion of video files to different video formats. This tutorial is intended for Centos/Redhat versions of Linux where any novice user can install ffmpeg without compiling the source which is a more traditional way of installing the FFmpeg software on linux servers. In this tutorial i will show you the easy way to install ffmpeg and ffmpeg-php (php extension) with just yum rather than compiling ffmpeg from source files.

FFmpeg (http://ffmpeg.mplayerhq.hu)
Mplayer + Mencoder (http://www.mplayerhq.hu/design7/dload.html)
Flv2tool (http://inlet-media.de/flvtool2)
Libogg + Libvorbis (http://www.xiph.org/downloads)
LAME MP3 Encoder (http://lame.sourceforge.net)
FlowPlayer – A Free Flash Video Player – http://flowplayer.org/

Installing FFMpeg

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/usr/bin/ld: cannot find -lltdl
collect2: ld returned 1 exit status

What you need to do, is just follow the below steps.

1. Verify that the libtool and libtool-ltdl packages are installed.
2. Symlink libltdl.so to libltdl.so.x.x.x

If libtool and libtool-ltdl already exist, you may go to Step Two.
Step One

[root@banzaibill ~]# yum install libtool-ltdl libtool

Now you have libtool installed. To check it out, do:

[root@banzaibill ~]# yum info libtool*

Step Two

PHP looks for the libltdl library only at /usr/lib/libltdl.so

The symlink to this file is not included in the libtool packages. Do below commands:

[root@banzaibill ~]# cd /usr/lib
[root@banzaibill lib]# ln -s libltdl.so.3.1.4 libltdl.so

And that’s it. PHP should configure and compile without error.

I found good examples for this.

- Quick HOWTO (from LinuxHomeNetworking.com) – download

- Sample IPTABLES Configuration (RedHat/CentOS) – download

When you’re running REDHAT/CENTOS platform for your server, sometimes the RPM wont run normally or become stuck. This caused by the RPM database not properly builded or been corrupted.

Errors would be like :

rpmdb: Program version 4.3 doesn’t match environment version
error: db4 error(-30974) from dbenv->open: DB_VERSION_MISMATCH: Database environment version mismatch
error: cannot open Packages index using db3 – (-30974)
error: cannot open Packages database in /var/lib/rpm

rpmdb: Program version 4.3 doesn’t match environment version
error: db4 error(-30974) from dbenv->open: DB_VERSION_MISMATCH: Database environment version mismatch
error: cannot open Packages database in /var/lib/rpm

So, to solve those issues,
you can run these commands from ROOT access:

rm -f /var/lib/rpm/__db*
rpm -vv –rebuilddb

The ‘-vv’ parameter on rpm, will STDOUT.

To run it as background process, do:

rpm –rebuilddb &

Just put below on your top line of the scripts :

$ips = array(”127.0.0.1″,”aaa.bbb.ccc”,”xxx.yyy.zzz”);
$userip = $_SERVER['REMOTE_ADDR'];
foreach ($ips as $ip) {
if (!preg_match(”/$ip/i”, $userip)) {
echo “Access Denied!”;
exit;
}
}

Notes:
$ips is the allowed IP address range

Other way, you can use .htaccess to protect directories/files.