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Autres articles (68)
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Des sites réalisés avec MediaSPIP
2 mai 2011, parCette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page. -
Support audio et vidéo HTML5
10 avril 2011MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...) -
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 (3430)
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Creating a video stream that supports a dynamic replacement between a video file and an image file in FFMPEG
13 juillet 2017, par Michael YuzvinskyI want to be able to dynamically change in a stream between a specific video file and a specific image file in FFMPEG software. for example i would like to dynamically play the video for 10 seconds and then replace it for 5 seconds with the image and so on.
can someone please help methank =]
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How to merge mp3 and mp4 in python / Mute a mp4 file and add a mp3 file on it
14 septembre 2020, par MadarI want to merge an mp3 and an mp4 in python, if possible with the moviepy library.


But my mp4 video got some sound in it, so i want to delete this sound before.


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How to get animated webp file with transparent background padding after converting from mp4 file with ffmpeg ?
2 mars 2024, par isharth rastogiI need to convert mp4 video(1280×720) to webp file(512x512) such that the resulting webp file maintains aspect ratio and also gets entirely contained in 512x512 and the uncovered areas at the top and bottom should be transparent.


I tried the following ffmpeg command :


ffmpeg -i sample.mp4 
-vcodec libwebp -filter:v fps=fps=20 -lossless 1 -loop 0 -preset default -an -vsync 0 -vf 
scale=512:512:force_original_aspect_ratio=decrease,pad=512:512:-1:-1:color=#00000000 sample.webp



In the above command please note
pad=512:512:-1:-1:color=#00000000

I have given the alpha values 00 but it outputs black color only.

I also referred to this site https://ffmpeg.org/ffmpeg-utils.html#color-syntax It says




It can be the name of a color as defined below (case insensitive match) or a 0xRRGGBB[AA] sequence, possibly followed by @ and a string representing the alpha component.
The alpha component may be a string composed of "0x" followed by a hexadecimal number or a decimal number between 0.0 and 1.0, which represents the opacity value (‘0x00’ or ‘0.0’ means completely transparent, ‘0xff’ or ‘1.0’ completely opaque). If the alpha component is not specified then ‘0xff’ is assumed.




I tried both
color=0x000000@0x00
andcolor=0x000000@0.0
but the result was opaque black.