Multimedia « Avi Alkalay

FaceTime do iPhone 4 é uma revolução para VoIP, não para video-chamada

Published: Thu, 17 Jun 2010 15:50:28 +0000 Updated: Thu, 17 Jun 2010 15:50:28 +0000 |

Horas depois do lançamento do iPhone 4, twitei sobre como seriam revolucionárias as novas capabilidades de VoIP do iPhone, batizado de FaceTime. Fiz questão de vasculhar a Internet para encontrar empatia naquela visão, mas aparentemente todos estavam facinados somente com o aspecto “videochamada” do aplicativo.

FaceTime é uma nova função integrada na aplicação de telefone do [...]

Community and Society ● Multimedia ● Web 2.0

Como será sua próxima TV

Published: Fri, 07 May 2010 03:41:15 +0000 Updated: Mon, 24 May 2010 18:13:09 +0000 |

2 comments

Antena ou “conversor” digital é bobagem para quem tem TV a cabo. Só serve pra quem precisa captar sinal digital do ar e por enquanto só serve para a cidade de São Paulo.

Sobre OLED vs LED vs LCD vs Plasma, é o tipo da coisa que você só sente a diferença de imagem na loja, [...]

Multimedia ● Web 2.0

The Flash versus Apple War

Published: Fri, 29 Jan 2010 12:29:52 +0000 Updated: Mon, 24 May 2010 18:04:14 +0000 |

1 comment

This is my reaction to The iPad provides the ultimate browsing experience? that appeared on the Flash Blog.

I’m not an Apple fan but I tend to disagree with that campaign of Flash support.

Clearly, this is another platform war. The Apple platform versus the Flash platform. It is very strategic for Apple to keep the attention [...]

Multimedia

Samsung LED TV with Medi@ 2.0 is not ready for me

Published: Thu, 28 Jan 2010 19:18:49 +0000 Updated: Mon, 24 May 2010 18:03:52 +0000 |

4 comments

Today I spent several hours testing the almost amazing Samsung LED TV on a local store. More specifically the UN40B7000 model.

The image quality is great and all but I was more interested in the digital multimedia features included in these new models, branded Medi@ 2.0 (or Media 2.0). You actually plug these TVs on your [...]

Mobility ● Multimedia

How the iPhone 3GS records videos

Published: Sat, 07 Nov 2009 15:51:27 +0000 Updated: Wed, 25 Nov 2009 10:56:35 +0000 |

comments

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 [...]

Linux & Open Source ● Multimedia

Organize fast and precisely your MP3 files with ID3v2 tags

Published: Sun, 07 Jun 2009 21:32:37 +0000 Updated: Thu, 17 Jun 2010 23:59:58 +0000 |

comments

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 [...]

Linux & Open Source ● Multimedia

A Media Center at Home

Published: Sat, 25 Apr 2009 11:39:38 +0000 Updated: Mon, 27 Apr 2009 09:08:28 +0000 |

2 comments

Since we got a 52″ Samsung LCD TV almost a year ago as a gift from relatives, I knew it was time to attach to it a dedicated computer and have a full digital media experience in the living room. I’ll tell you here my experiences building and running this thing that makes all my [...]

Metaphysics ● Multimedia

First Views of Our Baby

Published: Tue, 26 Aug 2008 17:40:40 +0000 Updated: Tue, 26 Aug 2008 18:19:16 +0000 |

12 comments

This is the 12 weeks plus 4 days ultrasound result of our baby.

We don’t know yet if its a boy or a girl. Stay tuned, it will be revealed in the next one.

He is growing fast and we are looking forward for his arrival in february.

Get the Flash Player to see this content.

var params = [...]

Info & Biz Technology ● Multimedia

Como Receber Conteúdo de Agências de Publicidade

Published: Fri, 08 Aug 2008 18:50:36 +0000 Updated: Wed, 21 Jan 2009 09:36:13 +0000 |

4 comments

Agências de Publicidade ou de Marketing são 100% digitais hoje em dia. Geram conteúdo digital em forma de videos, animações, documentos, imagens etc. Às vezes preciso interagir com essas agências e é importante que todo seu potencial criativo esteja materializado em formatos abertos para que seus clientes (nós) tenham máxima flexibilidade ao usar seus serviços.

Este [...]

Mobility ● Multimedia

A Test with High Definition Video Conferencing

Published: Mon, 28 Jul 2008 17:58:58 +0000 Updated: Mon, 28 Jul 2008 18:05:24 +0000 |

4 comments

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 [...]

Multimedia

How to Make High Quality DVD Rips

Published: Sun, 02 Mar 2008 09:36:50 +0000 Updated: Wed, 11 Mar 2009 09:48:50 +0000 |

47 comments

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 [...]

Multimedia ● Web 2.0

Flash Player now supports advanced MPEG-4 content

Published: Thu, 11 Oct 2007 14:06:12 +0000 Updated: Sun, 02 Mar 2008 09:58:22 +0000 |

10 comments

Adobe’s press release says it all: lab version of o Flash Player 9.0 supports latest and best multimedia technologies.

Thanks to YouTube and other online video services, the Adobe Flash Player browser plug in is probably the most popular video player in the world. But before this version, only the proprietary and now inefficient FLV format [...]

Mobility ● Multimedia

My New Cellphone

Published: Sat, 04 Aug 2007 20:12:39 +0000 Updated: Sun, 02 Mar 2008 09:59:51 +0000 |

22 comments

Its a Nokia E61i.

The Nokia E Series smartphones are currently the most advanced in the market. Some may say iPhone but there is no more than great usability and fancy-ness on it.

These are a few characteristics I like in E61i:

QWERTY keyboard. I’m tired of loosing stylus pens and even use them to point things.
WiFi with [...]

Linux & Open Source ● Multimedia

Fedora Post-installation Configurations

Published: Sun, 10 Jun 2007 17:31:03 +0000 Updated: Mon, 12 Jul 2010 18:29:52 +0000 |

27 comments

A short and practical guide on how to install proprietary technologies on Fedora Linux. Get MP3, DivX/Xvid, MP4, AVI, Flash, and fonts installed easily on Fedora [...]

Linux & Open Source ● Mobility ● Multimedia

Propagandas do iPhone para Linux

Published: Mon, 04 Jun 2007 11:26:37 +0000 Updated: Sun, 02 Mar 2008 09:58:56 +0000 |

1 comment

A Apple finalmente deu a data de lançamento do iPhone: 29 de junho.

Em seu site há 3 lindos videos mostrando a operação fácil do aparelho. Mas exige Quicktime e sem isso não funciona. Para um leigo.

Mas como já sabia que a Apple usa padrões ISO em seus videos, tipo MP4, H.264 e AAC, foi só [...]

Community and Society ● Linux & Open Source ● Multimedia

Suas Multas e Linux

Published: Wed, 09 May 2007 17:48:05 +0000 Updated: Sun, 02 Mar 2008 10:02:27 +0000 |

10 comments

Sabe aquela multa de radar que você recebeu? Foi enviada pelo [...]

Multimedia

Supra-sumo em Compressão de Video

Published: Wed, 09 May 2007 10:23:48 +0000 Updated: Sun, 02 Mar 2008 09:59:23 +0000 |

10 comments

Andei estudando tecnologias de compressão de vídeo e é um mundo fascinante. Tudo sobre Linux.

DivX e Xvid são compressores ainda bons mas de gerações anteriores. O mais moderno e avançado é o H.264 também conhecido por MPEG-4 AVC, padrão ISO. Uma das melhores implementações desse compressor é livre: o projeto x264.

E sobre containers, um dos [...]

Community and Society ● Essays ● Multimedia ● Music & Podcasts ● Web 2.0

Sobre Podcast

Published: Fri, 12 Jan 2007 08:11:50 +0000 Updated: Sun, 02 Mar 2008 10:01:25 +0000 |

3 comments

Uma vez perguntei a um amigo o que é um podcast, e ele disse que é um MP3. Bem, isso é tão minimalista quanto dizer que um Gaudí é um amontoado de tijolos, ou que a Internet é uma porção de bits dançantes.

Um podcast é um blog não-textual. Seu conteúdo pode ser audio e/ou vídeo, [...]