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Autres articles (89)
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Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
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Support de tous types de médias
10 avril 2011Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)
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Le profil des utilisateurs
12 avril 2011, parChaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
L’utilisateur a accès à la modification de profil depuis sa page auteur, un lien dans la navigation "Modifier votre profil" est (...)
Sur d’autres sites (10952)
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Segmentation Analytics : How to Leverage It on Your Site
27 octobre 2023, par Erin — Analytics Tips -
Uncaught ReferenceError : createFFmpeg is not defined
29 décembre 2023, par irankhostraviHow to create an FFMpeg video tag in HTML 5 ?


I get this error




Uncaught ReferenceError : createFFmpeg is not defined









 
 <code class="echappe-js"><script src="https://cdn.jsdelivr.net/npm/@ffmpeg/ffmpeg"></script>



HTML5 FFmpeg Example

 

<script>&#xA; const ffmpeg = createFFmpeg({ log: true });&#xA; const loadFFmpeg = async () => {&#xA; await ffmpeg.load();&#xA; console.log(&#x27;FFmpeg loaded&#x27;);&#xA; };&#xA; loadFFmpeg();&#xA; </script>









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ImageJ / Fiji shows wrong number of frames in video (FFMPEG import)
28 avril 2023, par locoric_polskaI am counting the number of animals in a an area using Fiji. I import the video through the FFMPEG plug-in (videos are mp4 with mpeg-4 codec). However, I noticed that when I import the videos Fiji uploads the wrong number of frames, and I cannot understand why and how.


An example. I have a video shot at 25fps which is 1582s long. If I do the calculations the video should have 39550 frames in total (1582*25). When I open it through a Computer vision package in R, I see that the video correctly contains 39550 frames. However, when loaded in Fiji, the shown number of frames is 49511. So Fiji is adding 9961 frames to the video. This is consistent across all videos that are recorded in 25fps, while it does not appear in videos shot at 24fps.


Curiously, I found that the ratio between the number of frames read by Fiji and the 'real' number of frames is consistent between 0.79 and 0.80. This makes me think that Fiji is expecting the video to be 30fps and (possibly) duplicating frames to adjust the video to this assumption.


Unfortunately, I discovered all this after finishing my analysis and while trying to merge this dataset with another obtained through CV. The number of frame does not match between datasets and I am not sure how to solve this.


Any help would be greatly appreciated !!


An idea is to multiply all the frame numbers by 0.8 to adjust them to the old assumption. This solution assumes that Fiji is duplicating frames throughout the video in a consistent way