Category Archives: Analyse

Precision about HTTP streaming format in Adobe Media Server

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ams To begin this new year, I make this post on a subject which can introduce misunderstandings. Previously, Adobe named it streaming server : Flash Media Server (aka FMS) v4.5. In october 2012, Adobe release a new version and recalled the server: Adobe Media Server (aka AMS) v5.0.1. Some acronym used in FMS are the same in AMS, but this is not the same “products” (e.g. PHLS). In this post, I will give some input on live streaming format and especially about security applied on. Continue reading →

Mistserver – a new multimedia streaming server – First overview

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Mistserver is a open-source multimedia streaming server developed by DDVTech a company based in Netherlands. This server will support some technologies : HLS, HDS, Smooth Streaming, RTMP, …

For the moment, HDS, RTMP and progressive download are available. You can push too livestream via RMTP. The company have two others solutions : MistSteward, MistCenter.

DDVTech positions his solution in a competitive market with some actors : Adobe Media Server, Wowza, Red5, Apache, …

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Packaging adaptive bitrate VOD content on the fly

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The actual market on the OTT use Adaptive Bit Rate video format over HTTP (Smooth Streaming, HTTP Dynamic Streaming, HTTP Live Streaming and MPEG-DASH soon) to deliver the content. I make this analyse without integrate the DRMs system which is a big topic itself. Here is an overview of the different format available for each platform.

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The matrix is a kind complex; all this technologies are multibitrate, so for one asset, you need to transcode for each bitrate. Each technology is different and use his own specification :

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If I follow the specifications given by the manufacturers (HLS) or if I’m basing on 4 bitrates for the others formats (Smooth Streaming, HDS), I need to transcode more than 20 times the same asset.

There is an option to avoid and reduce significatively the number of transcoding tasks : the packaging on the fly. This article will only analyse the on-demand side, not the live. Continue reading →

[Tribune] La 3D est l’évolution logique du cinéma

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Je fais profiter de mon blog à Antoine Cabrera-Marchal (@3dproductionsfr) pour réaliser un article au sujet de la 3D. Personnellement, j’ai du mal avec la 3D peut être parce que j’ai du mal avec l’immersion. Je vous laisse cependant le parcourir.

Avant-propos

Alors, pour être très clair et très précis, on ne dit pas 3D mais relief ou stéréoscopie… La terminologie 3D étant un abus de langage pour désigner les films ou animations réalisés ou convertis en 3D stéréoscopique, permettant la restitution de l’image en relief, notre vision naturelle. Continue reading →