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Autres articles (15)
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Installation en mode ferme
4 février 2011, parLe mode ferme permet d’héberger plusieurs sites de type MediaSPIP en n’installant qu’une seule fois son noyau fonctionnel.
C’est la méthode que nous utilisons sur cette même plateforme.
L’utilisation en mode ferme nécessite de connaïtre un peu le mécanisme de SPIP contrairement à la version standalone qui ne nécessite pas réellement de connaissances spécifique puisque l’espace privé habituel de SPIP n’est plus utilisé.
Dans un premier temps, vous devez avoir installé les mêmes fichiers que l’installation (...) -
Supporting all media types
13 avril 2011, parUnlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)
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Taille des images et des logos définissables
9 février 2011, parDans beaucoup d’endroits du site, logos et images sont redimensionnées pour correspondre aux emplacements définis par les thèmes. L’ensemble des ces tailles pouvant changer d’un thème à un autre peuvent être définies directement dans le thème et éviter ainsi à l’utilisateur de devoir les configurer manuellement après avoir changé l’apparence de son site.
Ces tailles d’images sont également disponibles dans la configuration spécifique de MediaSPIP Core. La taille maximale du logo du site en pixels, on permet (...)
Sur d’autres sites (4525)
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How to install youtube-to-gif in the Linux server ?
8 janvier 2016, par ChinuHi I am using Linux cloud server. I have successfully installed
ffmpeg
andnodeJS
by server support team. But I am unable to install youtube-to-gifMy nodeJS version is - 2.5.1
ffmpeg version is - 0.8.17-4:0.8.17-0ubuntu0.12.04.1I have tried to installed
youtube-to-gif
in following command$ sudo npm install youtube-to-gif -g
or
$ npm install youtube-to-gif -g
This two command not working. I saw
youtube-to-gif
installed in the node_modules directory but when i am typing$ youtube-to-gif -h
I got this error message-bash: youtube-to-gif: command not found
YouTube to GIF command
youtube-to-gif -u https://www.youtube.com/watch?v=NqxSgp385N0 -b 30 -d 5
SERVER
Local
Document - https://www.npmjs.com/package/youtube-to-gif
I am not sure this is perfectly installed or not. But
youtube-to-gif
command not working. Can you please help me. -
What is the point of encrypting HLS files ?
29 janvier 2016, par APITCI am currently working on a project of videos on demand where I convert videos to HLS using FFMPEG.
Videos are publicly hosted on AWS S3 and there is an API giving the URL of the HLS playlist.
Now, I was looking at encrypting HLS files with AES-128 so that people can’t download and watch the video offline.
I found the procedure which consists in hosting the key online and using that key while converting the video to encrypt the segments.The URL of the key is written in the HLS playlist, and the file is publicly available online.
So anyone has access to the encryption key.
I don’t understand what is the point of encrypting the segments if anyone has access to the key.
Can someone enlighten me ? I know I must be missing something. Thanks !
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images->video->web canvas : RGB/YUV issues
5 février 2016, par nrobWe’ve written an web app which :
- takes 3D, time dependent weather data
- tiles each 3D time point to make a 2D frame (written out as a png image)
- stitches these frames together into a video (using ffmpeg/avconv)
- streams this video into a web app
- polls the canvas for frames
- sends the frames to the GPU where they are converted back to 3D and ray traced
You can see the app here, code here and you can see the data video here
Currently the pngs are written as RGB images, the video codec is in YUV and getting frames from the canvas returns RGB. As such there is a significant loss of information due to the conversion between image spaces.
Does anyone have suggestions what is the best way round this ?
I’ve tried a bunch of RGB video codecs, but I can’t get any to work, and I don’t know if the web browser will support it anyway. Can anyone suggest a good RGB codec (both lossy and lossless would be great)
Also, is it possible to write to YUV images/read them from a video canvas in HTML5 ?
Ultimately, I don’t even want anything to do with images/videos, I’m just hacking the codecs to stream/compress large animated 3D data volumes