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Médias (2)
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Rennes Emotion Map 2010-11
19 octobre 2011, par
Mis à jour : Juillet 2013
Langue : français
Type : Texte
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Carte de Schillerkiez
13 mai 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Texte
Autres articles (56)
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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 -
Emballe médias : à quoi cela sert ?
4 février 2011, parCe plugin vise à gérer des sites de mise en ligne de documents de tous types.
Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ; -
Keeping control of your media in your hands
13 avril 2011, parThe vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)
Sur d’autres sites (9289)
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Detection of virtual background on video using ffmpeg
28 juillet 2021, par Marcos GI am trying with ffmpeg to detect the use of a virtual background on a video, like the ones used in Google Meet. I got some ideas, but none seem to work :


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- Egde color : When using a chroma key you can get shades of green/blue on the outline of the subject. This is called spill, and can be detectable, but gets discarded by the fact that you dont need a chroma key to fake a background (example : Google Meet).
- Still image : Most of virtual backgrounds are a still image pasted behind the subject. The problem with detecting this is that most of the real backgrounds also are like still images, without much movement.
- Blur : When faking a background without a chroma key the outline of the subject becomes very blurry (this is more noticeable when the subject moves), but I can't find a way to detect it using ffmpeg.








How can I do this ? I'm open to trying other tecniques such as AI.


Thanks in advance.


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avcodec/vp8 : Do not use num_coeff_partitions in thread/buffer setup
30 septembre 2015, par Michael Niedermayeravcodec/vp8 : Do not use num_coeff_partitions in thread/buffer setup
The variable is not a constant and can lead to race conditions
Fixes : repro.webm (not reproducable with FFmpeg alone)
Found-by : Dale Curtis <dalecurtis@google.com>
Tested-by : Dale Curtis <dalecurtis@google.com>
Signed-off-by : Michael Niedermayer <michael@niedermayer.cc> -
prebuilt ffmpeg library for android
15 décembre 2014, par andruidoNice being here.
I researched a lot on the topic but now i am stuck.Currently i try to receive a udp stream within android, i am using the libraries from http://code.google.com/p/javacv/downloads/list, most of the things work fine. However if i try to use "avformat_network_init() ;" (thanks to this Receiving RTSP stream using FFMPEG library) i get the following error :
undefined reference to `avformat_network_init’
my guess is that the prebuilt library called "libavformat.so" does not contain the specific function, am i right ? if so, does anyone know where i can find the appropriate library ? I am developing on windows and failed already building it myself with cygwin and currently have not the option to install ubuntu or such.
thanks in advance.