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Autres articles (52)
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Ajouter notes et légendes aux images
7 février 2011, parPour pouvoir ajouter notes et légendes aux images, la première étape est d’installer le plugin "Légendes".
Une fois le plugin activé, vous pouvez le configurer dans l’espace de configuration afin de modifier les droits de création / modification et de suppression des notes. Par défaut seuls les administrateurs du site peuvent ajouter des notes aux images.
Modification lors de l’ajout d’un média
Lors de l’ajout d’un média de type "image" un nouveau bouton apparait au dessus de la prévisualisation (...) -
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 (...) -
De l’upload à la vidéo finale [version standalone]
31 janvier 2010, parLe chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
Upload et récupération d’informations de la vidéo source
Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)
Sur d’autres sites (5953)
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Why after rendering with ffmpeg, file size did not decrease ?
15 avril 2021, par ptrraPROBLEM : After rendering a certain video with
ffmpeg
file size increased from 4GB to 6GB.

ORIGINAL VIDEO : EE1.mkv

FFMPEG COMMAND :ffmpeg -i EE1.mkv -c:a copy -c:v libx264 -crf 23 -preset medium -profile:v high out.mp4

QUESTIONS : Why did the file size increase ? What am I doing wrong ?

!DETAILS !

After a few years I made about 30 gaming videos (130GB) and with the current covid-19 situation I started recording my online classes (about 40 videos or 150GB). Now because I'm lacking space on my 1TB external HDD I started getting intoffmpeg
. Before I was only usingobs-studio
and not good parameters for recording.

I was using
CBR
mode for recording, either 5000KB or 15000KB bit rate with varying x264 presets and profiles because I was also experimenting with them. Usually superfast preset with high profile. So I wanted to convert all those videos withffmpeg
usingCRF 23
, medium preset and high profile. A note that when I'm recording withobs-studio
it's set to record in matroska format (.mkv
).

When I was rendering my online classes videos with these settings I managed to achieve 10x better compression with the same quality. And when rendering my gaming videos I managed to achieve up to 3x better compression with the same quality. However there is this one video that when rendered with the same parameters the file size increases.


The EE1.mkv should be recorded with
CBR
15000KB bit rate, with superfast preset and high profile. Also the game that is recorded in this video isEmpire Earth
which needs around 8000KB for it to look good. Everything more than 8000KB is not needed.

Thank you all for your help.


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Why after rendering with ffmpeg, file size did not decrease ?
15 avril 2021, par ptrraPROBLEM : After rendering a certain video with
ffmpeg
file size increased from 4GB to 6GB.

ORIGINAL VIDEO : EE1.mkv

FFMPEG COMMAND :ffmpeg -i EE1.mkv -c:a copy -c:v libx264 -crf 23 -preset medium -profile:v high out.mp4

QUESTIONS : Why did the file size increase ? What am I doing wrong ?

!DETAILS !

After a few years I made about 30 gaming videos (130GB) and with the current covid-19 situation I started recording my online classes (about 40 videos or 150GB). Now because I'm lacking space on my 1TB external HDD I started getting intoffmpeg
. Before I was only usingobs-studio
and not good parameters for recording.

I was using
CBR
mode for recording, either 5000KB or 15000KB bit rate with varying x264 presets and profiles because I was also experimenting with them. Usually superfast preset with high profile. So I wanted to convert all those videos withffmpeg
usingCRF 23
, medium preset and high profile. A note that when I'm recording withobs-studio
it's set to record in matroska format (.mkv
).

When I was rendering my online classes videos with these settings I managed to achieve 10x better compression with the same quality. And when rendering my gaming videos I managed to achieve up to 3x better compression with the same quality. However there is this one video that when rendered with the same parameters the file size increases.


The EE1.mkv should be recorded with
CBR
15000KB bit rate, with superfast preset and high profile. Also the game that is recorded in this video isEmpire Earth
which needs around 8000KB for it to look good. Everything more than 8000KB is not needed.

Thank you all for your help.


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Where to put compiled FFmpeg files ?
25 octobre 2019, par SpikekynSo I’m attempting to build an android app that uses the
LUT3D
part of the FFMpeg libraries to edit video. I’m pretty new to this so I’m having difficulty understanding how to get it to function in Android Studio.I currently am using
WritingMinds
ffmpeg-android-java
to try and get it to work. But I’m pretty lost as what to even do with the files. Most of the stuff I’ve found has been pretty old so I’m not sure if it’s still valid. Any help would be appreciated.