How to convert mp4 to AVI in Windows

I usually use Windows Movie Maker which is bundled with Microsoft Windows to edit video taken using digital camera. It supports quite a number of video formats like AVI, WMV and so on. However, MP4 is not support in it so far.

To converting MP4 file into AVI file, we may use Quick Media Converter.

According to Quick Media Converter introduction, it enables users to convert between most audio and video formats, including AVI, DVD, Quicktime, Flash, Xvid, DivX, MPEG, MP3, WMA, MP4, 3GP and many others. Users can convert multiple files (of different formats) in a single process and optionally customize the output settings in Expert Mode.

Port 443 occupied by VMWare Workstation 8

In VMWare workstation 8.0.0, vmware-hostd.exe appears to grab port 443. As port 443 is the default port for https SSL, this may prevent other web servers such as IIS or Apache to start on the system.

One solution for this problem is to change its default ports. With the Shared VMs Workstation preferences, we can disable/enable the server, assign a different port for connecting, and change the Shared VMs directory.

Frontaccounting: OpenSSL PHP extension have to be enabled to use extension repository system

During the installation of Frontaccounting system, your system may face the following warning

"OpenSSL PHP extension have to be enabled to use extension repository system"

To overcome this problem, simply added the following configuration into the php.ini file:

extension=php_openssl.dll

Hope help :)

OpenEMR installation notes

To ensure proper functioning of OpenEMR, following changes are required in php.ini configuration file:

1. "short_open_tag = On"
   
2. "display_errors = Off"
   
3. "register_globals = Off"
   
4. "magic_quotes_gpc = On"
   

OpenMRS "Save Concept" button missing in Add New Concept Page

In OpenMRS version 1.8.3, the "Save Concept" button is missing in Add New Concept Page.

In order to overcome this issue, create/add CATALINA_OPTS environment variable with the value: "-Dorg.apache.el.parser.SKIP_IDENTIFIER_CHECK=true" into your computer.

How to resolve xampp 1.7.7 Tomcat startup issue

When trying to start up tomcat service in xampp 1.7.7 or earlier, it may not be able to startup properly. Following are the message I noticed when trying to execute it:

C:\xampp>"Copy of catalina_start.bat"

[XAMPP]: Searching JDK HOME with reg query ...

Error: The system was unable to find the specified registry key or value
. [XAMPP]: Cannot find current JDK installation!
. [XAMPP]: Cannot set JAVA_HOME. Aborting ...
done.
Press any key to continue . . .

yum update Red Hat Linux / Fedora

Yum (Yellowdog Updater Modified) is a powerful automatic updater and package installer/remover on RPM-based Linux distributions like Red Hat / Fedora.

Yum automatically computes dependencies and figures out what things should occur to install packages. It makes it easier to maintain groups of machines without having to manually update each one using rpm.

The main Yum configuration file is /etc/yum.conf. Basic repository listings are located in the /etc/yum.repos.d/ directory. Unless you plan on adding other repositories or have a need to tweak certain configuration settings, these configuration files work as-is. Please refer to yum.conf manual page to find out the various options for this configuration file. You may like to take note about the keepcache option in this file. Set keepcache=1 if you want to keep the downloaded RPM files from erased after they are installed. However, make sure the cachedir directory has enough space to save the downloaded files.