
Recherche avancée
Médias (1)
-
Video d’abeille en portrait
14 mai 2011, par
Mis à jour : Février 2012
Langue : français
Type : Video
Autres articles (97)
-
MediaSPIP 0.1 Beta version
25 avril 2011, parMediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
The zip file provided here only contains the sources of MediaSPIP in its standalone version.
To get a working installation, you must manually install all-software dependencies on the server.
If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...) -
Multilang : améliorer l’interface pour les blocs multilingues
18 février 2011, parMultilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela. -
Les tâches Cron régulières de la ferme
1er décembre 2010, parLa gestion de la ferme passe par l’exécution à intervalle régulier de plusieurs tâches répétitives dites Cron.
Le super Cron (gestion_mutu_super_cron)
Cette tâche, planifiée chaque minute, a pour simple effet d’appeler le Cron de l’ensemble des instances de la mutualisation régulièrement. Couplée avec un Cron système sur le site central de la mutualisation, cela permet de simplement générer des visites régulières sur les différents sites et éviter que les tâches des sites peu visités soient trop (...)
Sur d’autres sites (11256)
-
Setting up a video standard (PAL, NTSC) in ffmpeg, ffplay
5 mars 2015, par grzebykI have a PAL camera and a stk1160 based video grabber, which is correctly recognised as a /dev/videoN under linux. I am able to watch the feed with vlc after setting up the video standard as a PAL (see the image).
For the purpose of my project I am forced to use ffmpeg. In the default configuration ffmpeg seems to use NTSC standard - image is in greyscale and is flickering (see below image). How can I set the PAL video standard in ffmpeg ?
-
Using inotifywait with a FIFO
2 mai 2019, par diatrevoloI am using
inotifywait
to watch a folder and run a video transcode when a file is done copying or moved into a share folder from within an Ubuntu Docker container. It seems to work, but occasionally it stops responding and seems to ignore files from that point on. Seeing as this is my first time usingmkfifo
, andinotifywait
, from the script below, is there anything that looks odd that someone could point out ? Thanks !#!/bin/bash
mkfifo video_pipe
inotifywait -m /media/transcode_inbox -e close_write -e moved_to | while read path action file
do
echo "$file" >> video_pipe
done &
while read file
do
mv /media/$file /media/originals/
ffmpeg -nostdin -i /media/originals/$file -c:v hap -format hap_q media/hap_q/$file &
done < video_pipe -
How to encode HEVC HDR10 to SVT-AV1 HDR10 ?
28 octobre 2022, par Mario GratziI'm currently trying to find a way to re-encode a HEVC HDR10 clip to SVT-AV1 HDR10 using ffmpeg but for some reason, I don't get ffmpeg to forward the HDR metadata to the AV1 clip. So the re-encoded AV1 clip always has very cold color grading, which does not make fun to watch at all...


I then checked onto FastFlix, a similar tool to Handbrake which is basically a ffmpeg frontend. If I select SVT-AV1 as encoder here, and I check onto the raw ffmpeg command FastFlix generates, it seems that this also includes the grading information :


-svtav1-params "color-primaries=9:transfer-characteristics=16:matrix-coefficients=9:mastering-display=G(0.2650,0.6900)B(0.1500,0.0600)R(0.6800,0.3200)WP(0.3127,0.3290)L(4000.0000,0.0050):content-light=368,226:enable-hdr=1"



The problem for me is now, how do I get these grading information with my own ffmpeg command ?