Avi Alkalay » tech:yes

Eu, Drupal e a Arrebentação

Avi — Fri, 20 Nov 2009 03:14:58 +0000

Dediquei-me nos últimos meses a estudar o Drupal. Fiz isso nas horas vagas (tipo da meia noite às 6 da manhã) e foi uma longa curva de aprendizado.

Para quem não sabe, Drupal é um Sistema de Gerenciamento de Conteúdo (CMS) para a Web. Um fazedor de sites, em outras palavras. Quaisquer sites.

Umas semanas atrás ultrapassei [...]

How the iPhone 3GS records videos

Avi — Sat, 07 Nov 2009 17:51:27 +0000

Here are some technical details an analysis about the formats used by the Apple iPhone 3GS to record video.

This is an annotated screenshot of the excellent Mediainfo by Jerome Martinez.

Some notes:

Apple always uses MOV as the extension for standard MP4 files. The recorded video uses an MP4 container so it is capable of holding modern [...]

WhiteHouse.Gov migrou para Drupal

Avi — Sun, 25 Oct 2009 12:54:39 +0000

Drupal é um dos melhores gerenciadores de conteúdo que existem e é Open Source.

Há quem diga que é porque o governo Obama incentiva Open Source blablabla etc. Mas a verdade é que provavelmente a escolha foi pelo melhor: Drupal. No blog do Tim O’reilly, há também mais detalhes sobre a infraestrutura: Red Hat Linux como [...]

Organize fast and precisely your MP3 files with ID3v2 tags

Avi — Mon, 08 Jun 2009 00:32:37 +0000

This is a set of personal notes and a tutorial for everyone about how to correctly organize and tag MP3 files using the id3 command line tool.

General way to tag MP3 files:

id3 -M -2 [-v] [-t title] [-a artist] [-l album] [-n tracknr] [-y year] [-g genre] [-c comment] file.mp3

Recursively tag with ID3v2 a tree [...]

A Test with High Definition Video Conferencing

Avi — Mon, 28 Jul 2008 20:58:58 +0000

I just participated in very successful proof of technology with Siemens OpenScape video conferencing products.

We made a point-to-point SIP high definition video conference over a local area network. Another test used H.323 protocol. We also included my SIP-enabled Nokia E61i in the conference over the office WiFi network in a direct multipoint call simply calling [...]

Open Source Software inside the iPhone

Avi — Sun, 23 Mar 2008 04:49:42 +0000

Can Open Source Software be more ubiquitous than this ?

A few days ago I was playing extensively with Apple’s iPhone, investigating each sub-menu and little details. There is a section listing legal stuff and software being used with each license. GPL, LGPL, BSD and other Open Source licensed software rule the iPhone.

Some I have noted:

BSD [...]

How to Make High Quality DVD Rips

Avi — Sun, 02 Mar 2008 12:36:50 +0000

After a long study of months I found this method to be the best way to rip/encode or backup my DVDs. The resulting digital file uses the best standards and technologies (as H.264, MP4, Matroska, AC3 etc), looks practically lossless to human eyes and has reasonable good file size (about 1 to 1.4GB per [...]

Zeroconf your Network

Avi — Mon, 03 Dec 2007 17:16:03 +0000

I remember the days when I was configuring DNS and DHCP for a small home network with only 2 or 3 computers.

This is not needed anymore since the invention of Zeroconf. As Wikipedia says, “is a set of techniques that automatically create a usable IP network without configuration or special servers. This allows inexpert users [...]

New Laptop

Avi — Thu, 29 Nov 2007 15:07:30 +0000

I am sort of away this days because I got a new laptop. Check it out.

My previous laptop was a IBM Thinkpad T40, Pentium M, 512MB RAM, 1024×768 screen size, CD-RW, Cisco WiFi/b, no bluetooth. Served me well for 4 years.

The new one is a Lenovo Thinkpad T61, Intel Centrino Pro (dual [...]

Renumbering Categories in WordPress Blogs

Avi — Sat, 13 Oct 2007 09:56:01 +0000

There are some situations you may want to manually change (or hack) the category numbers of your WordPress.org blog. Here is how.

Supose you have posts category named “Wine” with ID 15 and you want it to become 1015. You probably already have some posts categorized as “Wine” too and you want to make the number [...]