
Recherche avancée
Médias (1)
-
La conservation du net art au musée. Les stratégies à l’œuvre
26 mai 2011
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (55)
-
XMP PHP
13 mai 2011, parDixit Wikipedia, XMP signifie :
Extensible Metadata Platform ou XMP est un format de métadonnées basé sur XML utilisé dans les applications PDF, de photographie et de graphisme. Il a été lancé par Adobe Systems en avril 2001 en étant intégré à la version 5.0 d’Adobe Acrobat.
Étant basé sur XML, il gère un ensemble de tags dynamiques pour l’utilisation dans le cadre du Web sémantique.
XMP permet d’enregistrer sous forme d’un document XML des informations relatives à un fichier : titre, auteur, historique (...) -
Use, discuss, criticize
13 avril 2011, parTalk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
A discussion list is available for all exchanges between users. -
Installation en mode ferme
4 février 2011, parLe mode ferme permet d’héberger plusieurs sites de type MediaSPIP en n’installant qu’une seule fois son noyau fonctionnel.
C’est la méthode que nous utilisons sur cette même plateforme.
L’utilisation en mode ferme nécessite de connaïtre un peu le mécanisme de SPIP contrairement à la version standalone qui ne nécessite pas réellement de connaissances spécifique puisque l’espace privé habituel de SPIP n’est plus utilisé.
Dans un premier temps, vous devez avoir installé les mêmes fichiers que l’installation (...)
Sur d’autres sites (4682)
-
FFmpeg for marking time video based on a reference date
3 août 2016, par Denio MarizI am trying to mark a timestamp in a video using Drawtext filter.
FFmpeg easily marks timestamps based on localtime, gmtime or even PTS. However, I want to assign a reference time (start time) for the timestamp in order to represent the time the video was recorded (not encoded).Reading the documentation, I found that option "basetime" can be used for this purpose. However it seems that is not working or I am missing something.
The command line I am using is :
ffmpeg -y -i input.mp4 -filter_complex drawtext="fontfile=/tmp/UbuntuMono-B.ttf: fontsize=36: fontcolor=yellow: box=1: boxcolor=black@0.4: text='Wall Clock Time\: %{gmtime\:%Y-%m-%d %T}': basetime=1456007118" output.mp4
By using basetime=1456007118", it was expected the start time was set to ’02/20/2016 20:25:18’ since 1456007118 is the UTC time for that time and date :
date -d '02/20/2016 20:25:18' +"%s" # format MM/DD/AAAA hh:mm:ss
1456007118However, no error is issued by FFMpeg and the video is marked with current GMT, ignoring "basetime" option.
Any hint ?
Thanks.Complete information about FFmpeg version and output is :
ffmpeg -y -i /home/denio/Videos/Interstellar_2014_Trailer_4_5.1-1080p-HDTN.mp4 -filter_complex drawtext="fontfile=/tmp/UbuntuMono-B.ttf: fontsize=36: fontcolor=yellow: box=1: boxcolor=black@0.4: text='Wall Clock Time\: %{gmtime\:%Y-%m-%d %T}': basetime=1470226363" /tmp/x.mp4
ffmpeg version 3.1.1 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 5.3.1 (Ubuntu 5.3.1-14ubuntu2.1) 20160413
configuration: --enable-libxavs --enable-bzlib --enable-libfaac --enable-libfreetype --enable-libfontconfig --enable-libmp3lame --enable-libschroedinger --enable-libspeex --enable-libvorbis --enable-libx264 --enable-libx265 --enable-libxvid --enable-zlib --enable-x11grab --enable-static --enable-pthreads --enable-gpl --enable-nonfree --enable-version3 --disable-ffserver --enable-libgsm --enable-librtmp --enable-libvpx --enable-libschroedinger --enable-libopencore-amrnb --enable-libopenjpeg
libavutil 55. 28.100 / 55. 28.100
libavcodec 57. 48.101 / 57. 48.101
libavformat 57. 41.100 / 57. 41.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 47.100 / 6. 47.100
libswscale 4. 1.100 / 4. 1.100
libswresample 2. 1.100 / 2. 1.100
libpostproc 54. 0.100 / 54. 0.100
...
... -
FFmpeg error - “at least one output file must be specified” windows version
30 juin 2016, par AComputertI’m having a little trouble, and I feel like the solution is probably starting me in the face.
How Can I extract mp4 from HTTP live streaming m3u8 file ? I Tried this command below :ffmpeg -i http://ms1.movieland.ir/marci6z9OSicn34CRRcin2y4nv6KRZvigAIBsBbBGlj2HUPZBeEOY1019Zxc6zlQrq3ZkYrW0PiM1WDbpVn2JQ2/vod/5787c62c-fb29-4ca4-a328-b7447bb83436/medialist.m3u8?rpt=%5C2016%5C6%5C5787c62c-fb29-4ca4-a328-b7447bb83436&pid=0 -c copy -bsf:a aac_adtstoasc f:\stream\dora.mp4
When run, this yells at me that "At least one output file must be specified". I’ve been knocking me head on the wall for hours now, what am I missing ?
-
ffmpeg difference between time and rtime, utime
15 janvier, par nojobWhen I execute a command with "-benchmark" I can get some information like
rtime, utime, stime which are real time, user time and system time respectively.
But I can't understand what are they exactly ?
Because as I know, the real time is the wall clock which means the time that the whole process needs.


And there is another time at the end of the command.


Like below :




What is the difference between them ?
time : 00:00:00.16
rtime : 0.197s