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Autres articles (35)
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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 -
Encoding and processing into web-friendly formats
13 avril 2011, parMediaSPIP automatically converts uploaded files to internet-compatible formats.
Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
All uploaded files are stored online in their original format, so you can (...) -
Les formats acceptés
28 janvier 2010, parLes commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
ffmpeg -codecs ffmpeg -formats
Les format videos acceptés en entrée
Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
Les formats vidéos de sortie possibles
Dans un premier temps on (...)
Sur d’autres sites (6890)
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ffmpeg duplicates first frame
6 mars 2016, par user1605871When I create a video from series of images, it always duplicates the first frame several times, even when I choose a framerate, which is a multiple of the number of images. This is for a folder with 290 frames. Does anyone know how to fix this ? I’ve tried several things, for hours.
Command is like this :
$cmd5 = 'cat Folder/*.jpg | ffmpeg -f image2pipe -vcodec mjpeg -framerate 290/10 -i - -vcodec libx264 -vf \'scale=trunc(iw/2)*2:trunc(ih/2)*2\' Folder/out.mp4';
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Is there any way to concatinate multiple video and audio streams with offset ?
17 avril 2019, par Demchenko OlegI am sory for my english, it is not my mother language. My issue related to ffmpeg concatenation of audio and video streams. There are multiple audio and video streams which were recorded by online chat. All of them have start and end time points. If user turned off a micro or camera then audio and video streams wouldn’t be matched. How can I align all streams in one time series ? Can I add some white noise to separate the two videos ? Similar with audio.
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Revision 2584a5e5e5 : Add cheap show-buffer operation Adds the ability to have the decoder show one o
3 octobre 2012, par John KoleszarChanged Paths :
Modify /vp9/decoder/vp9_decodframe.c
Modify /vp9/encoder/vp9_bitstream.c
Add cheap show-buffer operationAdds the ability to have the decoder show one of the existing reference
frames directly, without having to code it indirectly as a series of
skip blocks.Change-Id : Ib6c26c5f6a8709863cf304ab890db8559687d25e