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Autres articles (95)
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Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
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Creating farms of unique websites
13 avril 2011, parMediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...) -
Other interesting software
13 avril 2011, parWe don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
We don’t know them, we didn’t try them, but you can take a peek.
Videopress
Website : http://videopress.com/
License : GNU/GPL v2
Source code : (...)
Sur d’autres sites (5003)
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Alias Artifacts
26 avril 2013, par Multimedia Mike — GeneralThroughout my own life, I have often observed that my own sense of nostalgia has a window that stretches about 10-15 years past from the current moment. Earlier this year, I discovered the show “Alias” and watched through the entire series thanks to Amazon Prime Instant Video (to be fair, I sort of skimmed the fifth and final season which I found to be horribly dull, or maybe franchise fatigue had set in). The show originally aired from 2001-2006 so I found that it fit well within the aforementioned nostalgia window.
But what was it, exactly, about the show that triggered nostalgia ? The computers, of course ! The show revolved around spies and espionage and cutting-edge technology necessarily played a role. The production designer for the series must have decided that Unix/Linux == awesome hacking and so many screenshots featured Linux.
Since this is still nominally a multimedia blog, I’ll start of the screenshot recon with an old multimedia player. Here is a vintage Mac OS desktop running an ancient web browser (probably Netscape) that’s playing a full-window video (probably QuickTime embedded directly into the browser).
Click for larger image
Let’s jump right into the Linux side of things. This screenshot makes me particularly sentimental since this is exactly what a stock Linux/KDE desktop looked like circa 2001-2003 and is more or less what I would have worked with on my home computer at the time :
Click for larger image
Studying that screenshot, we see that the user logs in as root, even to the desktop environment. Poor security practice ; I would expect better from a bunch of spooks.
Echelon
Look at the terminal output in the above screenshot– it’s building a program named Echelon, an omniscient spy tool inspired by a real-world surveillance network of the same name. In the show, Echelon is used to supply plot-convenient intelligence. At one point, some antagonists get their hands on the Echelon source code and seek to compile it. When they do, they will have access to the vast surveillance network. If you know anything about how computers work, don’t think about that too hard.Anyway, it’s interesting to note that Echelon is a properly autotool’d program– when the bad guys finally got Echelon, installation was just a ‘make install’ command away. The compilation was very user-friendly, though, as it would pop up a nice dialog box showing build progress :
Click for larger image
Examining the build lines in both that screenshot and the following lines, we can see that Echelon cares about files such as common/db_err.c and bt_curadj.c :
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A little googling reveals that these files both belong to the Berkeley DB library. That works ; I can imagine a program like this leveraging various database packages.
Computer Languages
The Echelon source code stuff comes from episode 2.11 : “A Higher Echelon”. While one faction had gotten a hold of the actual Echelon source code, a rival faction had abducted the show’s resident uber-nerd and, learning that they didn’t actually receive the Echelon code, force the nerd to re-write Echelon from scratch. Which he then proceeds to do…
Click for larger image
The code he’s examining there appears to be C code that has something to do with joystick programming (JS_X_0, JS_Y_1, etc.). An eagle-eyed IMDb user contributed the trivia that he is looking at the file /usr/include/Linux/joystick.h.
Getting back to the plot, how could the bad buys possibly expect him to re-write a hugely complex piece of software from scratch ? You might think this is the height of absurdity for a computer-oriented story. You’ll be pleased to know that the writers agreed with that assessment since, when the program was actually executed, it claimed to be Echelon, but that broke into a game of Pong (or some simple game). Suddenly, it makes perfect sense why the guy was looking at the joystick header file.
This is the first bit of computer-oriented fun that I captured when I was watching the series :
Click for larger image
This printout purports to be a “mainframe log summary”. After some plot-advancing text about a security issue, it proceeds to dump out some Java source code.
SSH
Secure Shell (SSH) frequently showed up. Here’s a screenshot in which a verbose ‘ssh -v’ connection has just been closed, while a telnet command has apparently just been launched (evidenced by “Escape character is ‘^]’.”) :
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This is followed by some good old Hollywood Hacking in which a free-form database command is entered through any available command line interface :
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I don’t remember the episode details, but I’m pretty sure the output made perfect sense to the character typing the command. Here’s another screenshot where the SSH client pops up an extra-large GUI dialog element to notify the user that it’s currently negotiating with the host :
Click for larger image
Now that I look at that screenshot a little more closely, it appears to be a Win95/98 program. I wonder if there was an SSH client that actually popped up that gaudy dialog.
There’s a lot of gibberish in this screenshot and I wish I had written down some details about what it represented according to the episode’s plot :
Click for larger image
It almost sounds like they were trying to break into a network computer. Analyzing MD5 structure… public key synthesized. To me, the funniest feature is the 7-digit public key. I’m a bit rusty on the math of the RSA cryptosystem, but intuitively, it seems that the public and private keys need to be of roughly equal lengths. I.e., the private key in this scenario would also be 7 digits long.
Gadgets
Various devices and gadgets were seen at various junctures in the show. Here’s a tablet computer from back when tablet computers seemed like fantastical (albeit stylus-requiring) devices– the Fujitsu Stylistic 2300 :
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Here’s a videophone from an episode that aired in 2005. The specific model is the Packet8 DV326 (MSRP of US$500). As you can see from the screenshot, it can do 384 kbps both down and up.
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I really regret not writing down the episode details surrounding this gadget. I just know that it was critical that the good guys get it and keep from falling into the hands of the bad guys.
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As you can see, the (presumably) deadly device contains a Samsung chip and a Lexar chip. I have to wonder what device the production crew salvaged this from (probably just an old cell phone).
Other Programs
The GIMP photo editor makes an appearance while scrubbing security camera footage, and serves as the magical Enhance Button (at least they slung around the term “gamma”) :
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I have no idea what MacOS-based audio editing program this is. Any ideas ?
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FTP shows up in episode 2.12, “The Getaway”. It’s described as a “secure channel” for communication, which is quite humorous to anyone versed in internet technology.
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FFMPEG : i need audio channels 7 & 8 to be the main audio track for a video
10 avril 2013, par lo_fyeI have a video with 8 channels of audio.
I need tracks 7 (Left Stereo) and 8 (Right Stereo) to be the audio for the video (which I'm converting to flv).
I've tried playing with
-filter_complexand thejoin,amix, andamergefilters, as well as the-mapparameter, but I can't seem to find the right combination of values :-/Output :
/usr/local/bin/ffmpeg-1.0/bin/ffmpeg -i '/folder/video_name.mov' -f 'flv' \
-s '320x240' -b '250k' -aspect '4:3' -ac 1 -ab '64k' -ar '22050' -y \
/folder/video_name.flv
ffmpeg version N-46241-g09ea482 Copyright (c) 2000-2012 the FFmpeg developers
built on Nov 5 2012 07:33:09 with gcc 4.1.2 (GCC) 20080704 (Red Hat 4.1.2-46)
configuration: --prefix=/usr/local/bin/ffmpeg-1.0
libavutil 52. 1.100 / 52. 1.100
libavcodec 54. 70.100 / 54. 70.100
libavformat 54. 35.100 / 54. 35.100
libavdevice 54. 3.100 / 54. 3.100
libavfilter 3. 21.105 / 3. 21.105
libswscale 2. 1.101 / 2. 1.101
libswresample 0. 16.100 / 0. 16.100
Guessed Channel Layout for Input Stream #0.1 : mono
Guessed Channel Layout for Input Stream #0.2 : mono
Guessed Channel Layout for Input Stream #0.3 : mono
Guessed Channel Layout for Input Stream #0.4 : mono
Guessed Channel Layout for Input Stream #0.5 : mono
Guessed Channel Layout for Input Stream #0.6 : mono
Guessed Channel Layout for Input Stream #0.7 : mono
Guessed Channel Layout for Input Stream #0.8 : mono
Guessed Channel Layout for Input Stream #0.9 : mono
Guessed Channel Layout for Input Stream #0.10 : mono
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/folder/video_name.mov':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
creation_time : 2013-04-03 19:45:26
Duration: 00:00:39.03, start: 0.000000, bitrate: 122149 kb/s
Stream #0:0(eng): Video: prores (apch / 0x68637061), yuv422p10le, 1920x1080, 110585 kb/s, SAR 1:1 DAR 16:9, 23.98 fps, 23.98 tbr, 23976 tbn, 23976 tbc
Metadata:
creation_time : 2013-04-03 19:45:26
handler_name : Apple Alias Data Handler
timecode : 00:59:53:00
Stream #0:1(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32, 1152 kb/s
Metadata:
creation_time : 2013-04-03 19:45:26
handler_name : Apple Alias Data Handler
Stream #0:2(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32, 1152 kb/s
Metadata:
creation_time : 2013-04-03 19:45:26
handler_name : Apple Alias Data Handler
Stream #0:3(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32, 1152 kb/s
Metadata:
creation_time : 2013-04-03 19:45:26
handler_name : Apple Alias Data Handler
Stream #0:4(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32, 1152 kb/s
Metadata:
creation_time : 2013-04-03 19:45:26
handler_name : Apple Alias Data Handler
Stream #0:5(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32, 1152 kb/s
Metadata:
creation_time : 2013-04-03 19:45:26
handler_name : Apple Alias Data Handler
Stream #0:6(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32, 1152 kb/s
Metadata:
creation_time : 2013-04-03 19:45:26
handler_name : Apple Alias Data Handler
Stream #0:7(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32, 1152 kb/s
Metadata:
creation_time : 2013-04-03 19:45:26
handler_name : Apple Alias Data Handler
Stream #0:8(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32, 1152 kb/s
Metadata:
creation_time : 2013-04-03 19:45:26
handler_name : Apple Alias Data Handler
Stream #0:9(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32, 1152 kb/s
Metadata:
creation_time : 2013-04-03 19:45:26
handler_name : Apple Alias Data Handler
Stream #0:10(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32, 1152 kb/s
Metadata:
creation_time : 2013-04-03 19:45:26
handler_name : Apple Alias Data Handler
Stream #0:11(eng): Data: none (tmcd / 0x64636D74)
Metadata:
creation_time : 2013-04-03 19:45:30
handler_name : Apple Alias Data Handler
timecode : 00:59:53:00
Please use -b:a or -b:v, -b is ambiguous
Output #0, flv, to '/folder/video_name.flv':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
encoder : Lavf54.35.100
Stream #0:0(eng): Video: flv1 ([2][0][0][0] / 0x0002), yuv420p, 320x240 [SAR 1:1 DAR 4:3], q=2-31, 250 kb/s, 1k tbn, 23.98 tbc
Metadata:
creation_time : 2013-04-03 19:45:26
handler_name : Apple Alias Data Handler
timecode : 00:59:53:00
Stream #0:1(eng): Audio: adpcm_swf ([1][0][0][0] / 0x0001), 22050 Hz, mono, s16, 88 kb/s
Metadata:
creation_time : 2013-04-03 19:45:26
handler_name : Apple Alias Data Handler
Stream mapping:
Stream #0:0 -> #0:0 (prores -> flv)
Stream #0:1 -> #0:1 (pcm_s24le -> adpcm_swf)
Press [q] to stop, [?] for help
frame= 33 fps=0.0 q=2.0 size= 108kB time=00:00:01.99 bitrate= 442.4kbits/s
frame= 66 fps= 65 q=2.0 size= 225kB time=00:00:02.97 bitrate= 619.0kbits/s
frame= 99 fps= 65 q=2.0 size= 341kB time=00:00:04.96 bitrate= 561.8kbits/s
frame= 136 fps= 67 q=2.0 size= 400kB time=00:00:05.99 bitrate= 547.5kbits/s
frame= 177 fps= 70 q=3.0 size= 482kB time=00:00:07.98 bitrate= 494.3kbits/s
frame= 210 fps= 69 q=3.7 size= 590kB time=00:00:08.96 bitrate= 539.7kbits/s
frame= 240 fps= 68 q=6.3 size= 660kB time=00:00:10.01 bitrate= 539.7kbits/s
frame= 264 fps= 65 q=6.7 size= 719kB time=00:00:11.01 bitrate= 535.2kbits/s
frame= 288 fps= 63 q=8.4 size= 772kB time=00:00:12.02 bitrate= 526.1kbits/s
frame= 312 fps= 62 q=15.4 size= 829kB time=00:00:13.65 bitrate= 497.4kbits/s
frame= 336 fps= 60 q=10.4 size= 875kB time=00:00:14.02 bitrate= 511.1kbits/s
frame= 360 fps= 59 q=10.6 size= 916kB time=00:00:15.01 bitrate= 499.9kbits/s
frame= 383 fps= 58 q=17.8 size= 957kB time=00:00:15.97 bitrate= 490.6kbits/s
frame= 411 fps= 58 q=6.5 size= 1008kB time=00:00:17.97 bitrate= 459.3kbits/s
frame= 437 fps= 57 q=9.7 size= 1046kB time=00:00:18.99 bitrate= 451.3kbits/s
frame= 460 fps= 57 q=7.7 size= 1086kB time=00:00:20.01 bitrate= 444.6kbits/s
frame= 489 fps= 57 q=11.3 size= 1144kB time=00:00:20.99 bitrate= 446.3kbits/s
frame= 512 fps= 56 q=10.3 size= 1182kB time=00:00:22.01 bitrate= 439.8kbits/s
frame= 535 fps= 55 q=21.5 size= 1225kB time=00:00:22.98 bitrate= 436.7kbits/s
frame= 564 fps= 55 q=18.3 size= 1280kB time=00:00:24.00 bitrate= 436.8kbits/s
frame= 587 fps= 55 q=8.5 size= 1311kB time=00:00:24.98 bitrate= 429.7kbits/s
frame= 610 fps= 54 q=11.9 size= 1349kB time=00:00:26.00 bitrate= 424.9kbits/s
frame= 636 fps= 54 q=7.5 size= 1383kB time=00:00:26.98 bitrate= 419.8kbits/s
frame= 659 fps= 54 q=9.6 size= 1421kB time=00:00:28.00 bitrate= 415.6kbits/s
frame= 683 fps= 54 q=20.0 size= 1471kB time=00:00:29.02 bitrate= 415.1kbits/s
frame= 711 fps= 54 q=6.4 size= 1518kB time=00:00:30.00 bitrate= 414.5kbits/s
frame= 742 fps= 54 q=6.2 size= 1558kB time=00:00:31.02 bitrate= 411.5kbits/s
frame= 774 fps= 54 q=2.5 size= 1601kB time=00:00:33.01 bitrate= 397.1kbits/s
frame= 816 fps= 55 q=2.0 size= 1632kB time=00:00:34.50 bitrate= 387.6kbits/s
frame= 861 fps= 56 q=2.0 size= 1670kB time=00:00:35.99 bitrate= 380.1kbits/s
frame= 905 fps= 57 q=2.0 size= 1706kB time=00:00:38.03 bitrate= 367.4kbits/s
frame= 936 fps= 58 q=2.0 Lsize= 1730kB time=00:00:39.05 bitrate= 362.8kbits/s
video:1278kB audio:423kB subtitle:0 global headers:0kB muxing overhead 1.654557% -
Anomalie #2676 : IE8 : les onchange et tests checked ont des comportements bizarres
26 mars 2013, par marcimat -Peut être pas si loin que ça. Chez jQuery ils disaient « jQuery 2.0 (early 2013, not long after 1.9) ». On était à la béta 2 le 1er mars dernier. Donc, ça risque d’être dans la 3.1 à ce train là :) [oups] Ce message était destiné à #2965[/oups]
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