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Autres articles (24)
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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 (...) -
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 -
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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Curator of the Samples Archive
13 mai 2011, par Multimedia Mike — GeneralRemember how I mirrored the world-famous MPlayerHQ samples archive a few months ago ? Due to a series of events, the original archive is no longer online. However, me and the people who control the mplayerhq.hu domain figured out how to make samples.mplayerhq.hu point to samples.multimedia.cx.
That means... I’m the current owner and curator of our central multimedia samples repository. Such power ! This should probably be the fulfillment of a decade-long dream for me, having managed swaths of the archive, most notably the game formats section.
How This Came To Be
If you pay any attention to the open source multimedia scene, you might have noticed that there has been a smidge of turmoil. Heated words were exchanged, authority was questioned, some people probably said some things they didn’t mean, and the upshot is that, where once there was one project (FFmpeg), there are now 2 projects (also Libav). And to everyone who has wanted me to mention it on my blog— there, I finally broke my silence and formally acknowledged the schism.
For my part, I was just determined to ensure that the samples archive remained online, preferably at the original samples.mplayerhq.hu address. There are 10 years worth of web links out there pointing into the original repository.
Better Solution
I concede that it’s not entirely optimal to host the repository here at multimedia.cx. While I can offer a crazy amount of monthly bandwidth, I can’t offer rsync (invaluable for keeping mirrors in sync), nor can the server provide anonymous FTP or allow me to offer accounts to other admins who can manage the repository.
The samples archive is also mirrored at samples.libav.org/samples. I understand that service is provided by VideoLAN. Right now, both repositories are known to be static. I’m open to brainstorms about how to improve the situation.
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Module not found : Can't resolve './lib-cov/fluent-ffmpeg'
29 mars 2021, par anInputNameI created this project using
npx create-react-app, and I'm trying to useffmpeg-concat, but I get the error in the title. Node versionv14.15.1, npm version7.7.5. I haveffmpeginstalled and in my PATH.

Error :


./node_modules/fluent-ffmpeg/index.js
Module not found: Can't resolve './lib-cov/fluent-ffmpeg' in 'C:\Users\XXX\Desktop\test\node_modules\fluent-ffmpeg'


My code :


function App() {
 //this is taken from ffmpeg-concat documentation page
 const concat = require('ffmpeg-concat')
 await concat({
 output: 'test.mp4',
 videos: ["videos/a.mp4", "videos/b.mp4", "videos/c.mp4"],
 transition: {
 name: 'directionalWipe',
 duration: 500
 }
 })

 return (
 <div classname="App">
 <header classname="App-header">
 <video input="{"test.mp4"}"></video>
 </header>
 </div>
 );
}

class Video extends Component {
 render() {
 return (
 
 )
 }
}

export default App;


index.jsinnode_modules\fluent-ffmpeg\:

module.exports = process.env.FLUENTFFMPEG_COV ? require('./lib-cov/fluent-ffmpeg') : require('./lib/fluent-ffmpeg');


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ffmpeg piped to python and displayed with cv2.imshow slides rightward and changes colors
10 septembre 2021, par MichaelCode :


import cv2
import time
import subprocess
import numpy as np

w,h = 1920, 1080
fps = 15

def ffmpegGrab():
 """Generator to read frames from ffmpeg subprocess"""
 cmd = f'.\\Resources\\ffmpeg.exe -f gdigrab -framerate {fps} -offset_x 0 -offset_y 0 -video_size {w}x{h} -i desktop -pix_fmt bgr24 -vcodec rawvideo -an -sn -f image2pipe -' 

 proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, shell=True)
 while True:
 raw_frame = proc.stdout.read(w*h*3)
 frame = np.fromstring(raw_frame, np.uint8)
 frame = frame.reshape((h, w, 3))
 yield frame

# Get frame generator
gen = ffmpegGrab()

# Get start time
start = time.time()

# Read video frames from ffmpeg in loop
nFrames = 0
while True:
 # Read next frame from ffmpeg
 frame = next(gen)
 nFrames += 1

 frame = cv2.resize(frame, (w // 4, h // 4))

 cv2.imshow('screenshot', frame)

 if cv2.waitKey(1) == ord("q"):
 break

 fps = nFrames/(time.time()-start)
 print(f'FPS: {fps}')


cv2.destroyAllWindows()


The code does display the desktop capture however the color format seems to switch and the video scrolls rightward as if it is repeated. Am I going about this in the correct way ?


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