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La conservation du net art au musée. Les stratégies à l’œuvre
26 mai 2011
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (103)
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MediaSPIP 0.1 Beta version
25 avril 2011, parMediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
The zip file provided here only contains the sources of MediaSPIP in its standalone version.
To get a working installation, you must manually install all-software dependencies on the server.
If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...) -
Multilang : améliorer l’interface pour les blocs multilingues
18 février 2011, parMultilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela. -
Personnaliser en ajoutant son logo, sa bannière ou son image de fond
5 septembre 2013, parCertains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;
Sur d’autres sites (12217)
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ffmpeg empty video with low frame rate
27 avril 2013, par Marco GagliardiI've just downloaded ffmpeg since it seems to perfectly match my needs (make a video from a set of pictures). I'm currently playing around with some examples just to get started and there's something weird happening that I can't explain.
I'm trying this command (provided in the official documentation) :ffmpeg -f image2 -pattern_type glob -i 'foo-*.jpeg' -r 12 -s WxH foo.avi
on a data set of 10 jpg pictures (of course I changed the pattern with '*.jpg'). The video seems to be encoded correctly but it's simply too fast to be sure about that (anyway it stops on the last frame that corresponds to the last picture). In order to get a longer video i thought to low the frame rate from 12 to 1 (one sec each picture) or 0.5 (2 sec each one) and so on.. no way ! with low rate values even if the video is played the pictures are simply not displayed. The player (VLC in my case) just shows a blank/empty video for a few seconds.
Am I making something wrong or have I misunderstood the -r parameter ? Is it something related to codecs involved ? Finally.. How can i get each picture displayed for 1 or 2 seconds ?
Thank you !
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OpenCV stream captured CAM with H264 (mp4) codec
28 août 2015, par user1200794I like to stream the web cam pictures wich are captured by opencv. I think about a solution with ffmpeg and live555 (poorly they are not document so well). My problems are :
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How can convert the captured images to a H264 format so the picures/second match. If it is in a loop I get more than 25 pictures/sekond and the video is to fast.
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How can i directly stream the converted H264 stream over the network via rtp / rtps or similar.
Thanks for your help !
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FFmpeg Slideshow + Audio + Watermark + Maintain Aspect Ratio
16 janvier 2016, par PamelaI’m trying to make a slideshow from some pictures along with an existing mp3 (copied). Picture dimensions differ, but I want the video output to be 16:9 aspect ratio and 3840x2160. I also want a watermark. It is important that pictures are not stretched.
I tried this code...
ffmpeg -y -framerate 1/1.5 -i "pics/%03d.jpg" -i audio.mp3 -c:v libx264 -r 24 -preset veryfast -tune stillimage -c:a copy -pix_fmt yuv420p -aspect 16:9 -filter_complex "scale=iw*min(3840/iw\,2160/ih):ih*min(3840/iw\,2160/ih),pad=3840:2160:(3840-iw)/2:(2160-ih)/2, movie=watermark.png [watermark]; [in][watermark] overlay=main_w-overlay_w-10:main_h-overlay_h-10 [out]" vid.mkv
But it is giving me this error :
[AVFilterGraph @ 0x2d21480] Too many inputs specified for the "movie"
filter. Error initializing complex filters. Invalid argumentI am able to successfully make a slideshow with pictures, audio, and watermark ; however, I am unable to factor in the aspect ratio without having pictures getting stretched.
If it makes a difference, the output video will be uploaded to YouTube.