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Autres articles (77)
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Supporting all media types
13 avril 2011, parUnlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)
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Le profil des utilisateurs
12 avril 2011, parChaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
L’utilisateur a accès à la modification de profil depuis sa page auteur, un lien dans la navigation "Modifier votre profil" est (...) -
Pas question de marché, de cloud etc...
10 avril 2011Le vocabulaire utilisé sur ce site essaie d’éviter toute référence à la mode qui fleurit allègrement
sur le web 2.0 et dans les entreprises qui en vivent.
Vous êtes donc invité à bannir l’utilisation des termes "Brand", "Cloud", "Marché" etc...
Notre motivation est avant tout de créer un outil simple, accessible à pour tout le monde, favorisant
le partage de créations sur Internet et permettant aux auteurs de garder une autonomie optimale.
Aucun "contrat Gold ou Premium" n’est donc prévu, aucun (...)
Sur d’autres sites (9139)
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Revision f7f0eaa581 : Add adaptation option for VBR. Allow min and maxQ to creep when the undershoot
13 octobre 2014, par Paul WilkinsChanged Paths :
Modify /vp9/encoder/vp9_firstpass.c
Modify /vp9/encoder/vp9_firstpass.h
Modify /vp9/encoder/vp9_ratectrl.c
Modify /vp9/encoder/vp9_ratectrl.h
Add adaptation option for VBR.Allow min and maxQ to creep when the undershoot
or overshoot exceeds thresholds controlled by the
command line under_shoot_pct and over_shoot_pct
values.Default is 100%,100% which disables adaptation.
Derf results for example undershoot% / overshoot% :-
Head :- Mean abs (%rate error) = 14.4%
This check in :-
25%/25% - Mean abs (%rate error) = 6.7%
PSNR hit -1% SSIM -0.1%5% / 5% - Mean abs (%rate error) = 2.2%
PSNR hit -3.3% SSIM - 1.1%Most of the remaining error and most of the quality hit is
at extreme data rates. The adaptation code still has an
exception for material that is in effect static so that we
don’t over adjust and over spend on YT slide show type
content.(Rebase of If25a2449a415449c150acff23df713e9598d64c9
to resolve a auto-merge error)Change-Id : Iec4e1613ef0d067454751d8220edb7058dfbd816
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Converting video in different directory ?
2 janvier 2013, par radiakuMaterial is
1. slide1.png, slide2.png, slide3.png ( in C :\wbay\allimages\ )
2. Using Windows XP
3. Using newest stable ffmpeg ( ffmpeg.org )tried with this :
ffmpeg -f image2 -r 1/7 -i C:\wbay\allimages\slide%1d.png -ar 22050 -s 640x388 -f flv -y testvaid.mp4
and this
ffmpeg -f image2 -r 1/7 -i C:/wbay/allimages/slide%1d.png -ar 22050 -s 640x388 -f flv -y testvaid.mp4
Tried what mentioned here, no working
got this error
[png @ 024946e0] Missing png signature
[image2 @ 024979c0] decoding for stream 0 failed
[image2 @ 024979c0] Could not find codec parameters for stream 0 (Video: png): u
nspecified size
Consider increasing the value for the 'analyzeduration' and 'probesize' options
C:/wbay/allimages/slide%1d.png: could not find codec parametersBut if I moving my file in same with ffmpeg, its success.
How to solve this thing ?
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Removing / Overlaying logo on mp4 video format with ffmpeg on linux
13 juillet 2016, par SilverShadowI’m trying to remove logo from an .mp4 video format with ffmpeg on linux machine without re-encoding (for preserving the same quality) with the following command :
ffmpeg -i input.mp4 -vf delogo=x=270:y=190:w=40:h=40 -c:a copy output.mp4
and it give me the following errors :
Unrecognized option 'vf'
then a new error came up :
Unable to find a suitable output format for 'delogo=x=270:y=190:w=40:h=40'
ffmpeg always updating and it seems that they change command line arguments alot so any material or tutorial i find online seems to get out-dated quickly
I review their website documentation but can’t get it to work, I think i’m missing something...?
so what is the correct command line in linux shell also, how to view or find out exactly the area coordinates to be removed before actually removing logo/overlaying it and keep testing every while
and how to overlay a solid color in certain area instead of removing logo transparently as well ?