Recherche avancée

Médias (2)

Mot : - Tags -/map

Autres articles (96)

  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 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 (...)

  • MediaSPIP Core : La Configuration

    9 novembre 2010, par

    MediaSPIP 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 (...)

  • ANNEXE : Les plugins utilisés spécifiquement pour la ferme

    5 mars 2010, par

    Le site central/maître de la ferme a besoin d’utiliser plusieurs plugins supplémentaires vis à vis des canaux pour son bon fonctionnement. le plugin Gestion de la mutualisation ; le plugin inscription3 pour gérer les inscriptions et les demandes de création d’instance de mutualisation dès l’inscription des utilisateurs ; le plugin verifier qui fournit une API de vérification des champs (utilisé par inscription3) ; le plugin champs extras v2 nécessité par inscription3 (...)

Sur d’autres sites (5847)

  • ffmpeg hevc h265 4k 10 bit

    14 juillet 2017, par Ali Jose

    I want to be able to encode 4k videos in TS files having video codec as HEVC at constant bitrate 20 Mbps, dolby audio (2 channel front L & R). This is the spec sheet as provided from my client http://159.8.5.10:3001/download/4k-specs.xlsx Im using this code :

    I used this code at first to produce a sample which conforms to their spec sheet, however the playback was not smooth neither on my side nor on their side :

    ffmpeg -i input.mov -pix_fmt yuv420p10le -c:v libx265  -b:v 19.5M -minrate 19.5M -maxrate 19.5M -muxrate 20M -x265-params "level=6.2" -r 50 -s 3840x2160 -c:a ac3 -b:a 384k -minrate 384k -maxrate 384k -channel_layout 3  output.ts

    the produced sample is found in the following link : http://159.8.5.10:3001/download/two_mns_sample.rar

    The client sent me this sample, he told me it is provided by another supplier and it is approved by their end (it matches their spec sheet and plays smoothly in their broadcast software), the sample is found under the following link : http://159.8.5.10:3001/download/approved-4k.rar

    Then the client sent me another sample, they also said that it is approved by their side (matched their specs and plays smoothly in their broadcast software) found under the following link : http://159.8.5.10:3001/download/approved-4k-2.rar

    When examining well the second approved sample, I noticed that it doesnt meet the spec sheet 100% but the differences are minor (level @ 5.1 instead of 6.2 and dolby 5.1 instead of dolby Stereo... so minor differences) but as they described, it played back smoothly in their broadcast playback. So we can understand from that that they are a bit flexible.

    My 4k source file is an mov Prores 4444, 23.97 fps, 10 bit depth, 444 chroma subsampling, variable bitrate (around 950 Mbps). To find out more info about the input file, please go to this link (MediaInfo txt export) : http://159.8.5.10:3001/download/4k-original.txt

    This is a 2mns sample trimmed clip from my original file (couldnt upload the whole source file since its 800 GB !) : http://159.8.5.10:3001/download/original-2-mns.mov

    I need an ffmpeg code that can generate a sample that complies to their specification sheet and can be played SMOOTHLY in their technical department, it was mentioned they are using 4k playbox technology (maybe airbox but it was not clear, but what we can assure is that they use good instrument for broadcast, they dont go for below average instrument/software), I need to send them samples that they later check and play on their playback system and get approved.

  • Anomalie #4721 (En cours) : cadre trop petit au moment d’une nouvelle installation, installation i...

    11 avril 2021, par Franck D

    Hello :)
    Juste pour dire qu’il y a eu un commit qui a eu comme effet de réduire le cadre de l’étape un quand une personne fait une nouvelle installation, voir copie d’écran (en bas)
    Résultat, impossible de faire un clique sur "suivant" et donc de faire une installation en partant de zéro :D
    SPIP 3.3.0-dev GIT [master : 2af193cb]

    Laragon avec :
    Php 8.0.3 (VS16 x64 Non Thread Safe) https://windows.php.net/download/
    Apache 2.4.46 Win64 avec mod_fcgid-2.3.10-win64-VS16 https://www.apachelounge.com/download/
    Mysql 8.0.23 (mysql-8.0.23-winx64.zip) https://dev.mysql.com/downloads/mysql/
    phpMyAdmin 5.1.0 https://www.phpmyadmin.net
    Firefox 87

    Pour info, Je n’ai pas fait d’essai avec d’autre navigateur, si besoin, faite signe :)

  • JPEG image quality problems

    2 mars 2020, par atokzz

    I have two different JPEG images captured by the same source (stream IP Boroscope MJPEG). I analyzed the bytes and the structure and, with my very little experience with image byte structures, I couldn’t tell the difference between the two. So, based on the image that has no defects, what makes JPEG 2 have quality problems ?

    PS. : Both of them has the correct SOI and EOI markers (FFD8 and FFD9)

    JPEG 1 : Image without quality problems download from here to see the bytes

    Image’s preview (do not download from here)

    JPEG 2 : Image with quality problems download from here to see the bytes

    Image’s preview (do not download from here)

    Online hex editor (online hex editor to see the binary of the image)

Navigation