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Autres articles (19)
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Ajouter notes et légendes aux images
7 février 2011, parPour pouvoir ajouter notes et légendes aux images, la première étape est d’installer le plugin "Légendes".
Une fois le plugin activé, vous pouvez le configurer dans l’espace de configuration afin de modifier les droits de création / modification et de suppression des notes. Par défaut seuls les administrateurs du site peuvent ajouter des notes aux images.
Modification lors de l’ajout d’un média
Lors de l’ajout d’un média de type "image" un nouveau bouton apparait au dessus de la prévisualisation (...) -
ANNEXE : Les plugins utilisés spécifiquement pour la ferme
5 mars 2010, parLe site central/maître de la ferme a besoin d’utiliser plusieurs plugins supplémentaires vis à vis des canaux pour son bon fonctionnement. le plugin Gestion de la mutualisation ; le plugin inscription3 pour gérer les inscriptions et les demandes de création d’instance de mutualisation dès l’inscription des utilisateurs ; le plugin verifier qui fournit une API de vérification des champs (utilisé par inscription3) ; le plugin champs extras v2 nécessité par inscription3 (...)
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Selection of projects using MediaSPIP
2 mai 2011, parThe examples below are representative elements of MediaSPIP specific uses for specific projects.
MediaSPIP farm @ Infini
The non profit organizationInfini develops hospitality activities, internet access point, training, realizing innovative projects in the field of information and communication technologies and Communication, and hosting of websites. It plays a unique and prominent role in the Brest (France) area, at the national level, among the half-dozen such association. Its members (...)
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Encoded mp4 video won't play in Firefox v33
3 novembre 2014, par Michael HeubergerWhen this video is encoded with the following ffmpeg command, it cannot be played in Firefox v33 (a blank screen appears). But when I play it in the native VLC player, it works. So here the long ffmpeg command :
$ ffmpeg -r 15 -f image2 -i /home/(...)/frames/%d.jpg -i
/home/(...)/preview.wav -y -acodec libfdk_aac -b:a 128k
-vcodec libx264 -b:v 386k -preset ultrafast -profile:v baseline
-crf 6 -pix_fmt yuv420p -loglevel warning -movflags faststart
/home/(...)/preview.mp4As you can see, preview.mp4 is encoded by a sequence of jpg images with a given wav file.
The ffmpeg output is just this
[wav @ 0x35ff460] Estimating duration from bitrate, this may be inaccurate
Guessed Channel Layout for Input Stream #1.0 : mono
[swscaler @ 0x35f0d80] deprecated pixel format used, make sure you did set range correctlyAny clues why it won’t play on Firefox (and what the other ffpmeg warnings mean) ?
Thanks !!!
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FFMPEG Concat protocol does not combine video files
16 septembre 2015, par Michael ErwinSo I’ve tried using the following command to combine 2 video files with the same codec :
ffmpeg -i "concat:/home/mike/downloads/a1.mp4|/home/mike/downloads/a2.mp4" -c copy "/home/mike/downloads/output.mp4"
The the result :
output.mp4
only contains video froma1.mp4
. I also tried 2 or more file but the result is the same. What could be the possible cause for this ? Please helpMike
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Linker error while using parallel video encoding library
27 février 2015, par user3288346This might be a question very specific to the tool, however I would just like to know the general approach to solving this.
I am using this tool https://github.com/luvit/luvi to perform parallel video encoding. It uses ffmpeg under the hood to the encoding.
I have installed all the necessary libraries needed. However, i get a linker error during the build.
Following is the error :/tmp/ccZtNGZQ.o : In function
init_out':
/home/koustubh/video-transcoding/luvi/common.c:43: undefined reference toavformat_alloc_output_context2’
/home/koustubh/video-transcoding/luvi/common.c:149 : undefined reference toavcodec_get_name'
/tmp/ccZtNGZQ.o: In functioninit_in’ :
/home/koustubh/video-transcoding/luvi/common.c:195 : undefined reference toavcodec_get_name'
/tmp/ccZtNGZQ.o: In functioninit_ctx’ :
/home/koustubh/video-transcoding/luvi/common.c:248 : undefined reference toxdo_keysequence'
/tmp/ccZtNGZQ.o: In functiontranscode’ :
/home/koustubh/video-transcoding/luvi/common.c:464 : undefined reference to `xdo_keysequence’What is general approach I should follow to fix this problem.