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Revolution of Open-source and film making towards open film making
6 octobre 2011, par
Mis à jour : Juillet 2013
Langue : English
Type : Texte
Autres articles (49)
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Les autorisations surchargées par les plugins
27 avril 2010, parMediaspip core
autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs -
Publier sur MédiaSpip
13 juin 2013Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir -
Contribute to translation
13 avril 2011You can help us to improve the language used in the software interface to make MediaSPIP more accessible and user-friendly. You can also translate the interface into any language that allows it to spread to new linguistic communities.
To do this, we use the translation interface of SPIP where the all the language modules of MediaSPIP are available. Just subscribe to the mailing list and request further informantion on translation.
MediaSPIP is currently available in French and English (...)
Sur d’autres sites (9668)
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Anomalie #4128 (En cours) : Bug de génération de boucle avec les modèles Spip
11 avril 2018, par Julien PORIAUDans les modèles personnalisés Spip, les images (boucle documents ou logos) sont mal générées et provoque un bug d’encodage visible dans le front-end lors du passage dans une autre langue (balises multi).
Nous n’avons pas trouvé où était le souci dans Spip, mais les caractères qui remontent dans le code source, ressemblent aux octets qui composent le fichier binaire d’une image.
Voir en live ici : http://spip-dev.nidecker.com/probleme-de-langue.html?lang=ca.Pour essayer d’isoler cette anomalie, nous avons procédé de la sorte avec l’aide de mon développeur :
1. Nous sommes reparti d’un SPIP 3.1.7 entièrement neuf (minimal), avec deux modèles Spip, rien d’autre.
Le bug se reproduit, ce qui exclus un problème lié aux squelettes ou autres plugins.Nous n’avons pas réussi a déterminer précisément ce qui génère ce bug, à part que c’est dans un contexte où on appelle une langue pas définie dans le multi.
En fonction du contenu de l’article, du nombre de modèles dans l’article, en fonction des boucles dans les inclure, le bug n’arrive pas au même endroit...Le problème vient de la génération des logos ou documents : si on supprime les balises
#LOGO_*
ou si on renommeIMG
enIMG_
, plus d’erreur.
Même sans traitements, avec juste[(#LOGO_*)]
, rien à faire.2. Nous avons pensé que c’était peut être une image au mauvais format : On a alors tenté de passer
ImageOptim
sur tout le répertoire/IMG
, redimensionné tous les logos en vignettes png de 320x240, rien à faire...3. On a fini par passer ce site de test en 3.2, pas mieux.
4. Nous avons épluché les caches générés dans
/tmp/cache
et/tmp/cache/skel
, tout paraît normal de ce côté là..5. On a ensuite un peu avancé en enlevant dans
mes_options.php
la variable$GLOBALS['forcer_lang'] = true
".
Sur la version minimal, plus de bug. Mais sur le site de production, le problème réside toujours.
Mais en faisant des tests avec et sans (et en supprimant bien/tmp/cache/
à chaque fois), ça se confirme pour la version minimal.6. A partir d’une copie de la version production, nous avons désactivé tout les plugins, passer
ImageOptim
sur/IMG
et rien a faire.. Impossible de déterminé d’où vient le problème :(7. Nous avons essayé d’écrire comme ceci :
[<img src="http://core.spip.org/projects/spip/(#LOGO_MOT|image_reduire{50,*}|extraire_attribut{src})" alt="" style='max-width: 300px; max-height: 300px' />]
Cela fonctionne sur la version minimal mais pas sur la version production.8. Dans la version minimal, j’ai encore récemment testé une dernière chose. J’ai supprimé les documents non sollicités sur ma page de teste (spip.php ?article1441&lang=ca).
Avec la requête SQL suivante :DELETE FROM jones_documents WHERE id_document NOT IN (1948,1949,2534,2535,630,631,1783,1784,1785,1786,1787,1788,1781,1782)
Le bug n’apparait plus..Je sèche..
Vous trouverez ici en téléchargement une archive de la version minimal (Spip 3.1.7) : https://www.dropbox.com/s/dek0zg7jafl8uxe/jones.zip?dl=0] ( 20mo)
Pour reproduire le bug, il suffit de passer la variable "&lang=ca" dans l’article 1441 (localhost/spip.php ?article1441&lang=ca).Je donne volontiers un accès à la version production si besoin.
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Death of A Micro Center
21 septembre 2012, par Multimedia Mike — HistoryThe Micro Center computer store located in Santa Clara, CA, USA closed recently :
I liked Micro Center. I have liked Micro Center ever since I first visited their Denver, CO location 10 years ago. I would sometimes drive an hour in each direction just to visit that shop. I was excited to see that they had a location in the Bay Area when I moved here a few years ago (despite the preponderance of Fry’s stores).
Now this location is gone. I wonder how much of the “we couldn’t come to favorable terms on a lease” was true (vs. an excuse to close a retail store at a time when more business is moving online, particularly in the heart of Silicon Valley). But that’s not what I wanted to discuss. I came here to discuss…
The Micro Center Window Logos
The craziest part about shopping the Santa Clara Micro Center location was the logos they displayed on the window outside. Every time I saw it, it made me sentimental for a time when some of these logos were current, or when some of these companies were still in business. Some of the logos on their front window were for companies I’ve never heard of. It reminds me of the nearby 7-11 convenience stores when I was growing up– their walls were decorated with people sporting embarrassingly 1970s styles long after the 1970s had transpired.
I thought I would record what those front window logos were and try to pinpoint when the store launched exactly (assuming the logos have been their since the initial opening and never changed).
Click for larger image
Here we have Lotus, Hewlett Packard/HP, Corel, Fuji, Power Macintosh, NEC, and Fujitsu. Lotus was purchased by IBM in 1995 and still seems to be maintained as a separate brand. The Power Macintosh was introduced as a brand in 1994. Corel’s logo has seen a few mutations over the years but I don’t know when this one fell out of favor.
Fuji (vs. Fujitsu) appears to refer to Fujifilm, though this logo is also obsolete.
Click for larger image
Hayes– I specifically remember reading the Slashdot post accouncing that Hayes is dead (followed by many comments reminiscing about the Hayes command set). Here is the post, from early 1999.
From Googling, it doesn’t appear IBM still has a presence in the consumer computing space (though they do have something pertaining to software for consumer products). Then there’s the good old rainbow Apple logo, something that went away in 1997. I suspect 1997 was also the last hurrah of the name ‘Macintosh’ (though I remember mistakenly referring to Apple computer products as Macintoshes well into the mid-2000s and inadvertently angering some Apple enthusiasts).
Click for larger image
As for the next segment, obviously, both Sony and Toshiba are still very much alive. Iomega was acquired by EMC in 2008 but is still maintained as a separate brand. USRobotics is still around and making — what else ? — 56K modems (and their current logo is slightly different than the one seen here).
Targus seems to be a case maker (“Leading Provider of Cases, Bags and Accessories for Laptops and Tablets”). I wonder if that’s just their current business or if they had more areas long ago ? It seems strange that they would get brand billing like this.
Finally, searching for information about Practical Peripherals only produces sites about how they’re long dead (like this history lesson). It’s unclear when they died.
The interior of this store was also decorated with more technology company logos near the ceiling (I didn’t really register that fact until I had visited many times). Regrettably, I now won’t be able to see how up to date those logos were.
Based on the data points above, it’s safe to conclude that the store opened between 1995 or 1996 (again, assuming the logos were placed at opening and never changed).
Epilogue
Here’s one more curious item still visible from the outside :
“See the world’s fastest PC !” Featuring an Intel Core 2 Extreme ? That CPU dates back to 2007 and was succeeded by Nehalem in late 2008. So even that sign, which is presumably easier and cleaner to replace than the window logos, was absurdly out of date.
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UVC webcam with ffplay outputs only noise ?
1er mars 2024, par Abdulla Masud(My end goal is to use a UVC webcam with esp32 or raspberry pi. I was hoping to learn while doing some fun projects.)


I have an old UVC webcam (Creative model ct6840) but I can't seem to get it to work with
ffplay
. I have tried looking through the documentation and other questions here but nothing is working for me. So far I have only been able to achieve a noisy-jittery output.

Running
ffplay -f rawvideo -video_size 670x480 /dev/video1
, I get :



Can someone help me understand how to make the camera work with
ffplay
?

The following is the information of my webcam :


$ ffmpeg -f v4l2 -list_formats all -i /dev/video2


[video4linux2,v4l2 @ 0x17eb3c0] Compressed: Unsupported : GSPCA OV511 : 320x240 640x480



$ v4l-info /dev/video2


### v4l2 device info [/dev/video2] ###
general info
 VIDIOC_QUERYCAP
 driver : "ov519"
 card : "USB Camera (05a9:0511)"
 bus_info : "usb-0000:00:14.0-8.2"
 version : 6.1.79
 capabilities : 0x85200001 [VIDEO_CAPTURE,?,READWRITE,STREAMING,(null)]

standards

inputs
 VIDIOC_ENUMINPUT(0)
 index : 0
 name : "ov519"
 type : CAMERA
 audioset : 0
 tuner : 0
 std : 0x0 []
 status : 0x0 []

video capture
 VIDIOC_ENUM_FMT(0,VIDEO_CAPTURE)
 index : 0
 type : VIDEO_CAPTURE
 flags : 1
 description : "GSPCA OV511"
 pixelformat : 0x3131354f [O511]
 VIDIOC_G_FMT(VIDEO_CAPTURE)
 type : VIDEO_CAPTURE
 fmt.pix.width : 640
 fmt.pix.height : 480
 fmt.pix.pixelformat : 0x3131354f [O511]
 fmt.pix.field : NONE
 fmt.pix.bytesperline : 640
 fmt.pix.sizeimage : 614400
 fmt.pix.colorspace : JPEG
 fmt.pix.priv : 4276996862

controls
 VIDIOC_QUERYCTRL(BASE+0)
 id : 9963776
 type : INTEGER
 name : "Brightness"
 minimum : 0
 maximum : 255
 step : 1
 default_value : 127
 flags : 48
 VIDIOC_QUERYCTRL(BASE+1)
 id : 9963777
 type : INTEGER
 name : "Contrast"
 minimum : 0
 maximum : 255
 step : 1
 default_value : 127
 flags : 32
 VIDIOC_QUERYCTRL(BASE+2)
 id : 9963778
 type : INTEGER
 name : "Saturation"
 minimum : 0
 maximum : 255
 step : 1
 default_value : 127
 flags : 32
 VIDIOC_QUERYCTRL(BASE+24)
 id : 9963800
 type : MENU
 name : "Power Line Frequency"
 minimum : 0
 maximum : 2
 step : 1
 default_value : 0
 flags : 0
 VIDIOC_QUERYCTRL(BASE+32)
 id : 9963808
 type : BOOLEAN
 name : "Brightness, Automatic"
 minimum : 0
 maximum : 1
 step : 1
 default_value : 1
 flags : 8



Can someone guide me here please ? Any advice will be greatly appreciated


(P.S. the camera works perfectly with "guvcview" gtk application but since I want to use the camera with raspberry pi, I want it to work with ffplay...)