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Médias (1)
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Publier une image simplement
13 avril 2011, par ,
Mis à jour : Février 2012
Langue : français
Type : Video
Autres articles (69)
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Les autorisations surchargées par les plugins
27 avril 2010, parMediaspip core
autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs -
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 -
HTML5 audio and video support
13 avril 2011, parMediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
For older browsers the Flowplayer flash fallback is used.
MediaSPIP allows for media playback on major mobile platforms with the above (...)
Sur d’autres sites (8645)
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How to optimize video to animated GIF conversion using PHP + shell commands
15 mars 2012, par user1070798I have a web application that converts any video into an animated GIF. The app runs in PHP and the following steps are executed through php's shell_exec :
- Scale video to smaller dimensions, if they are large (ffmpeg -i $in -s 200x150 -an $out)
- Use ffmpeg to extract 1 jpeg every x seconds (ffmpeg -i $in -ss $ss -vframes 1 $out)
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Convert jpegs to animated GIF using imagick (convert -delay $delay -loop 0 $dir/* $out)
aside - the reason I don't use the ffmpeg gif89a output is because the quality sucks.
I want to be able to except any major image format, but the most common will probably be .flv (flash) and .avi/.mpg.
My application runs fine, but I am a perfectionist and it needs to be faster for scalability.
My web server has 16 cores and I would like to utilize them as much as possible, but .flv multi-threading appears to not be supported by ffmpeg, while .avi and some others are supported. Also, ffmpeg doesn't support multi-threading when outputting to jpegs.
Does anyone know of any other programs that support multi-threading for .flv and others ? Are there any more efficient methods to create an animated GIF from video, while maintaining relatively decent quality (aka not the 100-color palette that ffmpeg supports) ?
Also, if anyone knows which codecs might perform best for stages 1 and 2, particularly with flv, I'd love to know. I've done hours of testing, but there are just so many options I haven't come to any solid conclusions.
***Update : My online app is working well so far animated gif generator. I would still love to make it faster though, so if anyone has run into similar circumstances... let me know !
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fate : add test for the life video source.
25 février 2012, par Nicolas Georgefate : add test for the life video source.
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fate : add test for the unsharp video filter.
25 février 2012, par Nicolas Georgefate : add test for the unsharp video filter.