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Médias (1)
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Somos millones 1
21 juillet 2014, par
Mis à jour : Juin 2015
Langue : français
Type : Video
Autres articles (50)
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MediaSPIP Core : La Configuration
9 novembre 2010, parMediaSPIP Core fournit par défaut trois pages différentes de configuration (ces pages utilisent le plugin de configuration CFG pour fonctionner) : une page spécifique à la configuration générale du squelettes ; une page spécifique à la configuration de la page d’accueil du site ; une page spécifique à la configuration des secteurs ;
Il fournit également une page supplémentaire qui n’apparait que lorsque certains plugins sont activés permettant de contrôler l’affichage et les fonctionnalités spécifiques (...) -
Demande de création d’un canal
12 mars 2010, parEn fonction de la configuration de la plateforme, l’utilisateur peu avoir à sa disposition deux méthodes différentes de demande de création de canal. La première est au moment de son inscription, la seconde, après son inscription en remplissant un formulaire de demande.
Les deux manières demandent les mêmes choses fonctionnent à peu près de la même manière, le futur utilisateur doit remplir une série de champ de formulaire permettant tout d’abord aux administrateurs d’avoir des informations quant à (...) -
Mediabox : ouvrir les images dans l’espace maximal pour l’utilisateur
8 février 2011, parLa visualisation des images est restreinte par la largeur accordée par le design du site (dépendant du thème utilisé). Elles sont donc visibles sous un format réduit. Afin de profiter de l’ensemble de la place disponible sur l’écran de l’utilisateur, il est possible d’ajouter une fonctionnalité d’affichage de l’image dans une boite multimedia apparaissant au dessus du reste du contenu.
Pour ce faire il est nécessaire d’installer le plugin "Mediabox".
Configuration de la boite multimédia
Dès (...)
Sur d’autres sites (3019)
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Data from Python to FFMpeg
3 mai 2016, par user2956849I’m using Python and FFMpeg under Windows OS.
The problem is to create a single video file from images and audio tracks, stored in memory as numpy array.
I have done it in 2 steps, but I think it can be done better and faster :
Firstly, i create video file (using pipe:0 to transfer data from python to FFMpeg)
ffmpeg -y -f rawvideo -vcodec rawvideo -s 1920x1080 -pix_fmt bgr24 -r 5.00 -i pipe:0 -an -vcodec libx264 -preset medium -pix_fmt yuv420p video.avi
Then from this file and audio track from pipe I create needed file :
ffmpeg -y -f s16le -acodec pcm_s16le -ar 44100 -ac 1 -i pipe:0 -i video.avi -c:v h264 -c:a ac3 videoANDaudio.avi
Is it possible to do it just in one FFMpeg call ? Can I use 2 pipe streams to transfer data ? I also tried named pipe, but I found nothing in Google.
PS. May be there is any better way to do this ?
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Live video streaming with Node js ,HTML5, MPEG-DASH, FFMPEG and IP camera/Raspberry Pi
12 mai 2016, par sparksI am a programmer but i am very new in live video streaming concepts.I need help
What i want to accomplish
I want to develop an online live video streaming system.The scenario is i would have a device or number of devices(raspberry pi & camera only OR ip camera only ...not sure yet) to capture the video and stream the video live in real time remotely to my web app.Multiple clients can connect to the web app and watch the video live.The key things to note here, is that these devices should be wireless(able to connect to internet and live stream the content) and also i want to eliminate the idea of manually configuring the ip adrress to local WIFI router.So simply i turn on the device and it start streaming right away to the web app.
Infrastructure, Platforms,Browsers, Streaming methods and formats
In the beginning i just want to stream though chrome web browser(that’s all i care about).But in the future i would build android and IOS mobile apps.So long term i would expect to be Chrome and mobile(Android & IOS platforms)
So based on my research i learned that the client should be HTML5, streaming method MPEG-DASH(In the future add HLS), the web app will be in Node Js.I also came across Dash.js for Html5.My understanding of streaming based on my research
I also came across things like FFMPEG,Dash encoder and wowza which i am not clear about.Now correct me if i am wrong, my understanding is that FFMPEG get hold of the device/camera and the content(i am not sure the format of the content at this point)and format it(i am not sure what this means in simple english) and then Dash encoder picks up and re-format the content to MPEG-DASH format, which produces MPD and then Dash.js client uses MPD to display the video to the browser.
QUESTIONS
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First correct me if i am wrong based on my understanding above or
clarify for me.Also I am not sure of where the wowza streaming
engine come into play. Do i even need it ? -
I am not sure of the devices to use between Raspberry pi with camera
module/ Or IP Wifi camera by itself.I know with raspberry pi
connected to internet you can set up all the necessary programs and
stream the video to web app directly(not sure about quality and
performance) but I am not sure about Wifi camera.Is it possible to
connect to the wifi camera remotely from the web app programatically
without opening the wifi router portal manually or i should stick
with Raspbery Pi ? -
For raspberry Pi would i be able to connect it with high quality
picture IP camera/web cam ? (The point here to get the best picture
through raspbery Pi)My expectations
Better performance and quality would be great.But i know live streaming is not easy so i am willing to compromise performance to a point but not quality.
Thank you in advance, Anything will be appreciated.I know this is a lot so take your time :)
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How to Split MP3 Files with FFmpeg ?
27 octobre 2022, par LucasHow to split mp3 files with FFmpeg into the small mp3 files make it easy to manage, share and transfer ?
For example , I do have test.mp3 file with 1MB and I want to split into test00(i).mp3 files with smaller size.


I've tried with windows tool but want to have script which is running with ffmpeg.