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

yum install ffmpeg ffmpeg-devel

If you get package not found, then you will need to add few lines in the yum repository for dag packages installation. Create a file named dag.repo in /etc/yum.repos.d with the following contents on it

[dag]
name=Dag RPM Repository for Red Hat Enterprise Linux
baseurl=http://apt.sw.be/redhat/el$releasever/en/$basearch/dag
gpgcheck=1
enabled=1

then

yum install ffmpeg ffmpeg-devel

If everything is fine, then the installation should proceed smoothly. If not you will get something like warning GPG public key missing .

Common Errors

To fix rpmforge GPG key warning:

rpm -Uhv http://apt.sw.be/redhat/el5/en/i386/rpmforge/RPMS/rpmforge-release-0.3.6-1.el5.rf.i386.rpm

For more information refer to this faq depending on Centos version

Missing Dependency Error:

If you get missing dependency error like shown below, in the middle of ffmpeg installation

Error: Missing Dependency: libc.so.6(GLIBC_2.4) is needed by package ffmpeg
Error: Missing Dependency: libtheora.so.0(libtheora.so.1.0) is needed by package ffmpeg
Error: Missing Dependency: rtld(GNU_HASH) is needed by package ffmpeg
Error: Missing Dependency: libc.so.6(GLIBC_2.4) is needed by package imlib2
Error: Missing Dependency: rtld(GNU_HASH) is needed by package a52dec
Error: Missing Dependency: rtld(GNU_HASH) is needed by package imlib2
Error: Missing Dependency: rtld(GNU_HASH) is needed by package gsm
Error: Missing Dependency: libc.so.6(GLIBC_2.4) is needed by package x264
Error: Missing Dependency: rtld(GNU_HASH) is needed by package xvidcore
Error: Missing Dependency: libc.so.6(GLIBC_2.4) is needed by package lame
Error: Missing Dependency: libc.so.6(GLIBC_2.4) is needed by package a52dec
Error: Missing Dependency: rtld(GNU_HASH) is needed by package faad2
Error: Missing Dependency: rtld(GNU_HASH) is needed by package x264
Error: Missing Dependency: rtld(GNU_HASH) is needed by package lame
Error: Missing Dependency: libc.so.6(GLIBC_2.4) is needed by package xvidcore
Error: Missing Dependency: libc.so.6(GLIBC_2.4) is needed by package faac
Error: Missing Dependency: libc.so.6(GLIBC_2.4) is needed by package faad2
Error: Missing Dependency: libgif.so.4 is needed by package imlib2
Error: Missing Dependency: rtld(GNU_HASH) is needed by package faac
Error: Missing Dependency: libc.so.6(GLIBC_2.4) is needed by package gsm
Error: Missing Dependency: libpng12.so.0(PNG12_0) is needed by package imlib2
Error: Missing Dependency: rtld(GNU_HASH) is needed by package libmp4v2
Error: Missing Dependency: libc.so.6(GLIBC_2.4) is needed by package libmp4v2

then most commonly you have GLIB 2.3 installed instead of GLIB 2.4 version. To check the current GLIB version installed on your server. just use

yum list glib*

and it should list the latest GLIB package version.

The reason i was getting this error was my rpmforge packages was pointed to centos 5 versions instead of centos 4.6.

To fix dependency error:

To fix this error, you might need to check your rpmforge packages compatible to the release of your existing CentOS version.
Check the file /etc/yum.repos.d/rpmforge.repo and it should look like for Centos 4.6(Final). If you have lines like http://apt.sw.be/redhat/el5/en/mirrors-rpmforge you might need to make changes to the rpmforge.repos like shown below

Note: Backup the original rpmforge.repo file before you edit its content.

[rpmforge]
name = Red Hat Enterprise $releasever – RPMforge.net – dag
#baseurl = http://apt.sw.be/redhat/el4/en/$basearch/dag
mirrorlist = http://apt.sw.be/redhat/el4/en/mirrors-rpmforge
#mirrorlist = file:///etc/yum.repos.d/mirrors-rpmforge
enabled = 1
protect = 0
gpgkey = file:///etc/pki/rpm-gpg/RPM-GPG-KEY-rpmforge-dag
gpgcheck = 1

To know what linux type and version you are running

cat /etc/redhat-release

Once this is done, do again yum install ffmpeg.

This trick resolved the problem in my linux box running Centos 4.6 and this is the only way i found to install ffmpeg using yum.

To check the FFmpeg working:

Finally, check the ffmpeg whether it is working or not.

> ffmpeg
> ffmpeg -formats
> ffmpeg –help
// This lists path of mpeg, its modules and other path information
ffmpeg -i Input.file Output.file

To check what audi/video formats are supported

ffmpeg -formats > ffmpeg-format.txt

Open the ffmpeg-formats.txt to see the ooutput

D means decode
E means encode
V means video
A means audio
T = Truncated

The middle section of the below .htaccess file switches to https if the request URI begins with /dev and works.

The last section of the file works as well but does not work properly with the https redirect.

I basically want to be able to type http://www.namhuy.org/dev/some_sub_dir/ and be redirected to https://www.namhuy.org/dev/some_sub_dir/ and prompted for the http auth username and password.

What currently happens is if I go to http://www.namhuy.org/dev/some_sub_dir/ I get prompted for a username and password over port 80, and then immediately get prompted again over port 443. So my credentials are being sent twice, once in the clear, and once encrypted. Making the whole https url rewrite a little pointless.

The reason for doing this is so that I won’t be able to accidentally submit my user/pass over http; https will always be used to access the /dev directory.

Create a file /etc/httpd/conf.d/test.conf with:

<Directory “/var/www/html/dev”>
#
# force HTTPS
#
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}
</Directory>

…and then adding the following inside /etc/httpd/conf.d/ssl.conf just above the </VirtualHost> tag:

<Directory “/var/www/html/dev”>
#
# require authentication
#
AuthType Basic
AuthName “Please Log In”
AuthUserFile /var/www/auth/passwords
Require valid-user
</Directory>

rpm -Uvh http://bit.ly/q7kHBq

NoteThe full link for the RHEL 6 EPEL package and the links for the lower versions of RHEL are provided below. The rpm command prior to RHEL 6 cannot handle http redirects so no bit.ly links have been provided.

http://download.fedora.redhat.com/pub/epel/6/i386/epel-release-6-5.noarch.rpm

http://download.fedora.redhat.com/pub/epel/5/i386/epel-release-5-4.noarch.rpm

http://download.fedora.redhat.com/pub/epel/4/i386/epel-release-4-10.noarch.rpm

yum repolist2. Verify the installation using the command below. You should see epel in the output.

yum repolist

install yum priorities3. Install the Yum priorities package using the command below.

yum install yum-priorities

edit epel.repo4. Edit the file /etc/yum.repos.d/epel.repo and add the line below under the [epel] section.

priority=10

yum check update5. Test your configuration using the command below. You should see a priority protections message in the output.

yum check-update

sudo apt-get install curl libcurl3 libcurl3-dev php5-curl

After installing libcurl you should restart the web server with following command,

sudo /etc/init.d/apache2 restart

If you don’t have LAMP functionality already installed, then please click on the following link to find out how install LAMP on Ubuntu Linux,

Install Time Zone
1 $sudo aptitude install tzdata
2 $dpkg-reconfigure tzdata
3 $sudo vim /etc/ntp.conf

Add NTP server
1 driftfile /var/lib/ntp/ntp.drift
2 server 0.pool.ntp.org
3 server 1.pool.ntp.org
4 server 2.pool.ntp.org
5 server pool.ntp.org

Manually update the time by “$sudo ntpdate pool.ntp.org”

SEVERE: Error initializing endpoint
java.net.BindException: Address already in use:8080

Means you will to change tomcat’s port, here is how to do, go to
$CATALINA_HOME/conf/server.xml

change

<connector port:8080

to

<connector port:8083

If you running in multiple catalina services, you should create new shell script and include different $CATALINE_HOME and $CATALINA_BASE into it

First, check on your $CATALINA_HOME/conf/server.xml

You’ll end up with a file called installed-software. Copy the file to a usb key and copy it to a location on your backtrack machine.
Run: “dpkg –set-selections < installed-software” in the directory where you copied the file installed-software.
Finally the “sudo apt-get dselect-upgrade” commands completes all of this. Be aware that is might take while until the installtion finishes.

If the above doesn’t work, you probably do not have dselect installed.
In that case, run “apt-get install deselect”
The above instructions also work on BackTrack 5

1. First download apache tomcat 7 linux version zipped file, then extract it.

2. now u place the tomcat wherever you like using following command

sudo mv apachetomcat /usr/local/tomcat

3. make *.sh file executable inside /usr/local/tomcat/bin folder

sudo chmod +x *.sh

make sure you are inside the /usr/local/tomcat/bin folder..

4. you can install open jdk and jre or sun jdk and jre.

define JAVA_HOME path in .bashrc file or /etc/environment file

export JAVA_HOME=/usr/lib/jvm/sun-java-jdk…in my case..check yours

5. now write the script to run the tomcat at startup..

by creating a file tomcat in /etc/init.d directory

sudo nano /etc/init.d/tomcat

after that

in tomcat script file..

write script to start stop and restart

case “$1″ in

start)

sh /etc/local/tomcat/bin/startup.sh

;;

stop)

sh /etc/local/tomcat/bin/shutdown.sh

;;

restart)

sh /etc/local/tomcat/bin/shutdown.sh

sh /etc/local/tomcat/bin/startup.sh

;;

esac

exit 0

6. to run this tomcat script at startup, you can run this script in rc.local script which runs at startup or rc0 which is run at rebooting or rc6 which runs at shutdown..

for automatic handling by ubuntu,you can run following command

sudo update-rc.d tomcat defaults

it may show some warning message like LSB ..but you can ignore it because it is just a comment to write in any script in standard pattern.

reboot you computer or just login logout, you are ready to run your apache tomcat 7..

issue:: http://localhost:8080

for manager and host manager application of tomcat 7, you need to write following code..

sudo nano /usr/local/tomcat/conf/tomcat-users.xml

That’s all done..

For check..some commands can be useful..

echo $JAVA_HOME

sudo update-alternatives –config java

sudo update-alternatives –config javac

To free pagecache:
echo 1 > /proc/sys/vm/drop_caches

To free dentries and inodes:
echo 2 > /proc/sys/vm/drop_caches

To free pagecache, dentries and inodes:
echo 3 > /proc/sys/vm/drop_caches

This and Windows Live Safety are my first choices for a kid computer. K9 is a free product offered by Blue Coat Systems which make content filtering solutions for businesses. Giving away a free home client isn’t where they make their money so it’s nice they offer something for home users that utilizes their corporate filtering technologies. From what I’ve seen it is a free download, you can set up a parental password to override a blocked site, select from predefined site categories to block, set up email to audit what was visited, password protect the installation so someone can’t remote the app without knowing the password you used to secure the installation. Essentially everything I’d expect in a paid product.

Windows Live Safety

A part of the Windows Live Essentials pack. Free content filtering from Microsoft. This is on my list for the same reasons as the K9 Web filtering software above and I could see this being something a mom would put on her child’s computer. It’s a nice solution because it hooks into Windows well by leveraging features of Windows that we users tend to ignore, such as Windows Parental controls and whatnot.

OpenDNS

Kicking it up a notch we get to solutions that can either be used on a per computer basis or blanket a whole home. DNS stands for Domain Name Services. DNS servers are what your computer and network use to translate internet addresses to domain names. Example: go to your favorite web browser and paste 74.125.47.103 into it and you’ll be directed to google.com. By default your Internet provider has dynamically set you up to use their DNS servers. Unless you live in China you’re service provider doesn’t regulate what sites you go to but for the purposes of content filtering you can use 3rd party DNS servers which categorize content for you for easy filtering. All of these solutions are doing this same filtering but OpenDNS is one of the services that doesn’t necessarily require a client software install but can also be used by configuring your home router to use OpenDNS servers instead of your ISP’s to resolve domain names. The way their site works is you sign up and set up your content filters. You’d then either set up your child’s computer to point to their DNS servers or just plug them into your router’s setup instead of your ISP’s. Pretty easy if you take a moment to figure it out and they have pretty good instructions on how to do it since it sounds confusing.

Untangle

Kicking it up the extra notch. If you’re a bit more savvy with a computer this would be my last free solution. This product is a Ubuntu-based distribution (Linux) which clicks you through setting up a computer as a security appliance gateway on your network. Definitely a higher skillset than any other solution as you have to understand a bit more about networks but in the end it’s a network security appliance that rivals products a company might pay a chunk of change for. I suppose I won’t go into much details but this product bundles open source web content filtering, virus scanning, intrusion detection, firewall, protocol filtering, ad filtering… etc. Consider this if you are a geek that likes free stuff. You’d need an old computer with 2 network cards in it you can dedicate to running this product. A big gain for me is adblocking. You don’t know what it’s like to go from having programs that block ads on web pages to using a computer that doesn’t block ads.

In all we have 4 solutions that perform the same function of content filtering. Some client-side and some for whole network filtering. Some do just content filtering and others are bundled with much more. Any of these could be combined and work just fine though going to a website and having it filtered 4 times would make browsing slower. If I was setting this up for a child I’d pick a client-side program. When I think of OpenDNS I consider that my ISP’s DNS servers are likely closer to my network and would likely be a little quicker on resolving domain names but for whole network protection it’d be the easiest to set up. If I can afford using an old computer as an appliance I’d use Untangle, though I have to know how to set it up.

Rest assured you could set up K9 or Windows Family Safety in a matter of minutes.