Thursday, May 25, 2006

You are currently browsing the daily archive for Thursday, May 25, 2006.

Serenity in H.264 glory

I am a big fan of Firefly and Serenity. So I chose the title scene at the beginning of Serenity to make sample bitstreams for my internship presentation. I realize I may be violating some copyright laws by posting these files, however they are short and the scene contains screen text for the various people who worked on Serenity. A fair trade, I say.

The source material is the Serenity widescreen DVD, title 3 of the main feature, which has a duration of 00:05:17.86. The MPEG-2 video elementary stream has a bit rate of approximately 5900 kbps and a resolution of 720 by 304 (2.53:1). The AC-3 audio elementary stream has a bit rate of approximately 340 kbps and 6 channels (5.1 layout).

The first file is a high-quality encode using the main profile. The characteristics are as follows:

Video
Bit rate: 2000 kbps (CBR mode)
Resolution: 720 x 304 (2.35:1)
Frames per second: 23.98 (NTSC FILM)
Encoder: x264
Coding tools: main profile, level 5,1, B slices (max one), CABAC, trellis, intra-picture 4×4 analysis, hexagon ME pattern, two pass

Audio
Bit rate: 192 kbps (CBR mode)
Channel layout: stereo
Sampling rate: 48000 Hz
Encoder: FAAC
Coding tools: low complexity profile

Download the Serenity high quality clip (82.31 MB).

The second file respects the DMB specification in terms of coding tools, bit rate and resolution. It gives a feel for what people may expect to see on their cell phones, PDAs and other mobile devices within a few years. The characteristics are as follows:

Video
Bit rate: 300 kbps (CBR mode)
Resolution: 320 x 128 (2.35:1)
Frames per second: 23.98 (NTSC FILM)
Encoder: x264
Coding tools: baseline profile, level 1,3, intra-picture 4×4 analysis, hexagon ME pattern, two pass

Audio
Bit rate: 96 kbps (CBR mode)
Channel layout: stereo
Sampling rate: 48000 Hz
Encoder: FAAC
Coding tools: low complexity profile (does not respect the DMB specification, but no free HE-AAC encoder is available on Mac OS X)

Serenity_dmb_300.mov (15.19 MB).

This entry is in French because it mainly concerns Université Laval people.

En plus de mon rapport de recherche, j’ai dû écrire un rapport de stage et une présentation orale pour l’Université Laval. Cette dernière c’est déroulée hier avec plus ou moins de succès. Disons que j’avais beaucoup de contenu… beaucoup trop. Mais bon, je n’étais pas certain du niveau technique adéquat auquel l’Université s’attendait, alors j’ai visé vers le haut.

Voici donc mon rapport de recherche en format PDF (signature électronique) et ma présentation orale en format PDF (signature électronique).