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Autres articles (111)
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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 -
Script d’installation automatique de MediaSPIP
25 avril 2011, parAfin de palier aux difficultés d’installation dues principalement aux dépendances logicielles coté serveur, un script d’installation "tout en un" en bash a été créé afin de faciliter cette étape sur un serveur doté d’une distribution Linux compatible.
Vous devez bénéficier d’un accès SSH à votre serveur et d’un compte "root" afin de l’utiliser, ce qui permettra d’installer les dépendances. Contactez votre hébergeur si vous ne disposez pas de cela.
La documentation de l’utilisation du script d’installation (...) -
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 (11405)
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Create video with size based on image and place a video somewhere with an offset
10 mars 2024, par NoKeyI am trying out FFMPEG and I am unsure how hard it is to do what I want. I have some device frames and I want to play a video inside the frame. For example, this is a device frame :




Now I want to play a video within the screen of the iPhone. I already got the exact X and Y offset where the video must be placed to show it correctly. I have the following challenges to make it work, and I want to make sure FFMPEG can do it before I spend to much time reinventing the wheel :


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The output of the video must be as big as the PNG. This is already a
confusing part for me. I have the width and height already available,
but the things I saw is that FFMPEG will take over the input of the
video as final size. The final output of the video should of course
be the length of the input video.


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The background must be transparant (so no black background, I want to
play the video on top of a website so it's nice if it's transparant and the corners are not black).


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The ability to place a video somewhere with a specified X and Y
offset inside the device frame.


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Not sure if it's possible in the same command, but maybe the video
needs to be resized to make it fit. I got the exact dimensions for
the video.












The things I struggle most is point 1 where the output video must have a transparant background and where the device frame is placed in. Does anybody got tips ?


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Converting video to .mp4 format after upload from local system does not show the video only hear sound
18 juillet 2012, par user850234I am using
fileuploader.js
to upload a video file. Now i want to convert the video format to.mp4
. I have usedffmpeg
andphp
to convert the video to.mp4
after upload. The sample segment i used is$converted = "uploads/".$uniqid.".mp4"; //$uniqid is the id for the video after upload
$cmd = "$ffmpeg -i $sourceUrl -f mp4 $converted"; //$sourceUrl is the path of the videoI have tried to convert
.flv
video file to.mp4
format and it does but the problem is i cannot see the video only hear the sound after converting. Is the conversion line used in$cmd
incorrect. Please help. -
Converting a color video to 8-bit (per frame) video via FFMPEG
25 mai 2020, par SilverSurferI wish to convert a color video file (AVI format) to grayscale video (i.e. 8 bits per frame) AVI video via FFMPEG. Any pointers ?



I have tried using
gray
andyuv420p
options inpix_fmt
but it they didn't help.


Thank you