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Rennes Emotion Map 2010-11
19 octobre 2011, par
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (111)
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Problèmes fréquents
10 mars 2010, parPHP et safe_mode activé
Une des principales sources de problèmes relève de la configuration de PHP et notamment de l’activation du safe_mode
La solution consiterait à soit désactiver le safe_mode soit placer le script dans un répertoire accessible par apache pour le site -
Prérequis à l’installation
31 janvier 2010, parPréambule
Cet article n’a pas pour but de détailler les installations de ces logiciels mais plutôt de donner des informations sur leur configuration spécifique.
Avant toute chose SPIPMotion tout comme MediaSPIP est fait pour tourner sur des distributions Linux de type Debian ou dérivées (Ubuntu...). Les documentations de ce site se réfèrent donc à ces distributions. Il est également possible de l’utiliser sur d’autres distributions Linux mais aucune garantie de bon fonctionnement n’est possible.
Il (...) -
Déploiements possibles
31 janvier 2010, parDeux types de déploiements sont envisageable dépendant de deux aspects : La méthode d’installation envisagée (en standalone ou en ferme) ; Le nombre d’encodages journaliers et la fréquentation envisagés ;
L’encodage de vidéos est un processus lourd consommant énormément de ressources système (CPU et RAM), il est nécessaire de prendre tout cela en considération. Ce système n’est donc possible que sur un ou plusieurs serveurs dédiés.
Version mono serveur
La version mono serveur consiste à n’utiliser qu’une (...)
Sur d’autres sites (8733)
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VIVALDI FFMPEG H264 CODEC NVIDIA Mac OS X 10.12.5 ERROR HTML5 VIDEOS
30 septembre 2018, par Arthur MeloI’ve been suffering with the vivaldi browser when trying to run some videos, I believe they use codecs that vivaldi can not run using the architecture of my video card, or something of the genre.
The error does not manifest when using the Safari or Chrome or even Opera browsers.
Attached is the error
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usb capture device to "cast" stream
6 juin 2021, par cubesareneatim using a raspberry pi with a usb capture device (dmesg -w below)


[ 3825.105250] cx231xx 1-1.4:1.1: New device Geniatech Inc. Video Capture @ 480 Mbps (1f4d:0102) with 6 interfaces
[ 3825.105571] cx231xx 1-1.4:1.1: Identified as Geniatech OTG102 (card=17)
[ 3825.106698] i2c i2c-12: Added multiplexed i2c bus 14
[ 3825.106948] i2c i2c-12: Added multiplexed i2c bus 15
[ 3825.233031] cx25840 11-0044: cx23102 A/V decoder found @ 0x88 (cx231xx #0-0)
[ 3827.270228] cx25840 11-0044: loaded v4l-cx231xx-avcore-01.fw firmware (16382 bytes)
[ 3827.307022] cx231xx 1-1.4:1.1: v4l2 driver version 0.0.3
[ 3827.411911] cx231xx 1-1.4:1.1: Registered video device video0 [v4l2]
[ 3827.412183] cx231xx 1-1.4:1.1: Registered VBI device vbi0
[ 3827.418150] cx231xx 1-1.4:1.1: audio EndPoint Addr 0x83, Alternate settings: 3
[ 3827.418179] cx231xx 1-1.4:1.1: video EndPoint Addr 0x84, Alternate settings: 5
[ 3827.418203] cx231xx 1-1.4:1.1: VBI EndPoint Addr 0x85, Alternate settings: 2
[ 3827.418224] cx231xx 1-1.4:1.1: sliced CC EndPoint Addr 0x86, Alternate settings: 2



i want to stream the audio to "cast" dose this protocol have a more specific name ? its the one that Spotify and YouTube can send audio video to over local network ; little screen with a wifi signal in the bottom left corner.


i am thinking of going into ffmpeg or vlc to stream from usb to some cast program, dose anyone have any suggestions on where to start any key words so im not blindly googling ?
sorry this is so open ended, ill mark it solved with the best answer in like 5 days or when i finish this project ( turntable -> usb audio capture card on pi -> steam to cast protocol -> wifi speakers )


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How to grab voice and video in ffmpeg/mplayer/mencoder ? [closed]
4 février 2013, par Kill KillMy target is to grab voice and video via webcamera.
There are three ways to do :1.ffmpeg
ffmpeg -f oss -i /dev/dsp -f video4linux2 -r 25 -b 500000 -s 320x240 -i /dev/video0 out.mpg
WARNING: gnome-keyring:: couldn't connect to: /home/debian/.cache/keyring-4Hzs4r/pkcs11: No such file or directory
ffmpeg version 0.8.5-6:0.8.5-1, Copyright (c) 2000-2012 the Libav developers
built on Jan 13 2013 16:02:15 with gcc 4.7.2
*** THIS PROGRAM IS DEPRECATED ***
This program is only provided for compatibility and will be removed in a future release. Please use avconv instead.
[oss @ 0x9d63c60] /dev/dsp: No such file or directory
/dev/dsp: Input/output errorin my computer how to revise it ?
2.mplayer :
mplayer tv:// -tv driver=v4l2:input=0:width=640:height=480:fps=25 -vo x11
I can see the video when the command run, how can I save the output into a file and grab the voice ?
3.mencoder :
mencoder tv:// -tv driver=v4l2:width=800:height=600:device=/dev/video0:fps=30:outfmt=yuy2:forceaudio:alsa:adevice=hw.2,0 -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=1800 -ffourcc xvid -oac mp3lame -lameopts cbr=128 -o output.avi
MEncoder svn r34540 (Debian), built with gcc-4.7 (C) 2000-2012 MPlayer Team
success: format: 9 data: 0x0 - 0x0
TV file format detected.
Selected driver: v4l2
name: Video 4 Linux 2 input
author: Martin Olschewski
comment: first try, more to come
v4l2: your device driver does not support VIDIOC_G_STD ioctl, VIDIOC_G_PARM was used instead.
Selected device: PC Camera
Capabilities: video capture read/write streaming
supported norms:
inputs: 0 = zc3xx;
Current input: 0
Current format: unknown (0x4745504a)
tv.c: norm_from_string(pal): Bogus norm parameter, setting default.
v4l2: ioctl enum norm failed: Inappropriate ioctl for device
Error: Cannot set norm!
Selected input hasn't got a tuner!
ALSA lib pcm_hw.c:1401:(_snd_pcm_hw_open) Invalid value for card
Error opening audio: No such file or directory
ALSA lib pcm_hw.c:1401:(_snd_pcm_hw_open) Invalid value for card
Error opening audio: No such file or directory
ALSA lib pcm_hw.c:1401:(_snd_pcm_hw_open) Invalid value for card
Error opening audio: No such file or directory
v4l2: ioctl set mute failed: Invalid argument
v4l2: 0 frames successfully processed, 0 frames dropped.
============ Sorry, this file format is not recognized/supported =============
=== If this file is an AVI, ASF or MPEG stream, please contact the author! ===
Cannot open demuxer.
Exiting...