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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 -
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 (...) -
ANNEXE : Les plugins utilisés spécifiquement pour la ferme
5 mars 2010, parLe 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 (...)
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avcodec : Remove libaacplus
24 janvier 2016, par Timothy Guavcodec : Remove libaacplus
TODO : bump minor
It’s inferior in quality to fdk-aac and has an arguably more problematic
license.As early as 2012, a HydrogenAudio user reported :
> It has however one huge advantage : much better quality at low bitrates than
> faac and libaacplus.I myself have made a few spectrograms for a comparison of the two
encoders as well. The FDK output is consistently better than the
libaacplus one, in all bitrates I tested.libaacplus license is 3GPP + LGPLv2. 3GPP copyright notice is completely
proprietory, as follows :> No part may be reproduced except as authorized by written permission.
>
> The copyright and the foregoing restriction extend to reproduction in
> all media.
>
> © 2008, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC).
>
> All rights reserved.(The latest 26410-d00 zip from 3GPP has the same notice, but the copyright
year is changed to 2015)The copyright part of the FDK AAC license (section 2) is a copyleft
license that permits redistribution under certain conditions (and
therefore the LGPL + libfdk-aac combination is not prohibited by
configure) :> Redistribution and use in source and binary forms, with or without
> modification, are permitted without payment of copyright license fees
> provided that you satisfy the following conditions :
>
> You must retain the complete text of this software license in
> redistributions of the FDK AAC Codec or your modifications thereto in
> source code form.
>
> You must retain the complete text of this software license in the
> documentation and/or other materials provided with redistributions of
> the FDK AAC Codec or your modifications thereto in binary form.
>
> You must make available free of charge copies of the complete source
> code of the FDK AAC Codec and your modifications thereto to recipients
> of copies in binary form.
>
> The name of Fraunhofer may not be used to endorse or promote products
> derived from this library without prior written permission.
>
> You may not charge copyright license fees for anyone to use, copy or
> distribute the FDK AAC Codec software or your modifications thereto.
>
> Your modified versions of the FDK AAC Codec must carry prominent
> notices stating that you changed the software and the date of any
> change. For modified versions of the FDK AAC Codec, the term
> "Fraunhofer FDK AAC Codec Library for Android" must be replaced by the
> term "Third-Party Modified Version of the Fraunhofer FDK AAC Codec
> Library for Android." -
Is there any way to edit just the metadata of an AVI file, like mkvpropedit does with MKV files ?
20 juillet 2016, par hmj6jmhI am trying to swap the order of 2 audio tracks of an AVI file using
ffmpeg.ffmpeg -i "infile.avi" -map 0:0 -map 0:2 -map 0:1 -c copy "outfile.avi"This works but the file is being re-encoded, not copied. It takes much longer than a straight copy to finish and the resulting file is larger than the original.
Is there any way to edit just the metadata of an AVI file, like mkvpropedit does with MKV files ? Command line tool preferred.
General
Complete name : infile.avi
Format : AVI
Format/Info : Audio Video Interleave
File size : 451 MiB
Duration : 43mn 11s
Overall bit rate : 1 460 Kbps
Writing application : VirtualDubMod 1.5.10.2 (build 2540/release)
Writing library : VirtualDubMod build 2540/release
Video
ID : 0
Format : MPEG-4 Visual
Format profile : Advanced Simple@L5
Format settings, BVOP : 3
Format settings, QPel : No
Format settings, GMC : No warppoints
Format settings, Matrix : Default (MPEG)
Muxing mode : Packed bitstream
Codec ID : XVID
Codec ID/Hint : XviD
Duration : 43mn 11s
Bit rate : 1 190 Kbps
Width : 656 pixels
Height : 368 pixels
Display aspect ratio : 16:9
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.206
Stream size : 367 MiB (82%)
Writing library : XviD 1.2.1 (UTC 2008-12-04)
Audio #1
ID : 1
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 3
Codec ID : 55
Codec ID/Hint : MP3
Duration : 43mn 11s
Bit rate mode : Constant
Bit rate : 128 Kbps
Channel count : 2 channels
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 39.5 MiB (9%)
Alignment : Aligned on interleaves
Interleave, duration : 42 ms (1.00 video frame)
Interleave, preload duration : 504 ms
Writing library : LAME3.98r
Encoding settings : -m s -V 4 -q 2 -lowpass 17 -b 128
Audio #2
ID : 2
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 3
Codec ID : 55
Codec ID/Hint : MP3
Duration : 43mn 11s
Bit rate mode : Constant
Bit rate : 128 Kbps
Channel count : 2 channels
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 39.5 MiB (9%)
Alignment : Aligned on interleaves
Interleave, duration : 42 ms (1.00 video frame)
Interleave, preload duration : 504 ms
Writing library : LAME3.98r
Encoding settings : -m s -V 4 -q 2 -lowpass 17 -b 128 -
FFmpeg get frames equally spaced out from video
2 décembre 2017, par TheOtherguyz4kjI am having some real problems with FFmpeg in my Android application. I am currently trying to take a video recorded from the device and extract frames from the video equally throughout the video. I used this blog post. The last formula :
ffmpeg -i input.avi -f image2 -ss 2 -r 0.05 frame-%05d.pngwith my own
-ssand own-rvalues.Now everything is fine. Like mentioned in the blog the first 2 frames are the same for some reason. So i delete one of the frames then I feel as though the frames accurately show the video. In the blog it also says to delete some of the last frames I dont do this because then i dont get frames going to the end of the whole video.
In the output the first two images should be discarded and the next 6 images (from 3rd til 8th) will be the ones we were looking for. Most probably there’ll be a 9th image as well which can be discarded too. You can also add the -vframes 8 option (where 8 is number_of_frames + 2) to skip the creation of the last image that you won’t need anyway.
How accurately are these frames captured ? Because I would like to add timestamps to each frame. (
FFProbeis not an option because I am using an Android application and dont want to have to build the binaries just for this).If for example I had a video of 14 seconds long and ffmpeg extracted 11 frames (I remove one of the first duplicate ones, so now 10 frames). If i then did
videoLength / number of frames * which frame I want to findhow accurate would this be ? So :14/10 * 1 = 1 so frame one goes from 0s - 1.4s
14/10 * 2 = 2.8 so frame two goes from 1.4s - 2.8s
14/10 * 3 = 4.2 so frame two goes from 2.8s - 4.2s
...
14/10 * 10 = 14 so frame two goes from 12.6s - 14sWould this accurate represent each frame ?
If not could someonne give me a better solution please thanks.
The idea is I have created a video cropper with a recyclerview so I will be able to "go over" each frame with a drag tool, calculate how much the frame has been covered and then find what range that frame represents and then set a time for the start and end crop times
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