
Recherche avancée
Médias (1)
-
Revolution of Open-source and film making towards open film making
6 octobre 2011, par
Mis à jour : Juillet 2013
Langue : English
Type : Texte
Autres articles (58)
-
Participer à sa traduction
10 avril 2011Vous pouvez nous aider à améliorer les locutions utilisées dans le logiciel ou à traduire celui-ci dans n’importe qu’elle nouvelle langue permettant sa diffusion à de nouvelles communautés linguistiques.
Pour ce faire, on utilise l’interface de traduction de SPIP où l’ensemble des modules de langue de MediaSPIP sont à disposition. ll vous suffit de vous inscrire sur la liste de discussion des traducteurs pour demander plus d’informations.
Actuellement MediaSPIP n’est disponible qu’en français et (...) -
Personnaliser les catégories
21 juin 2013, parFormulaire de création d’une catégorie
Pour ceux qui connaissent bien SPIP, une catégorie peut être assimilée à une rubrique.
Dans le cas d’un document de type catégorie, les champs proposés par défaut sont : Texte
On peut modifier ce formulaire dans la partie :
Administration > Configuration des masques de formulaire.
Dans le cas d’un document de type média, les champs non affichés par défaut sont : Descriptif rapide
Par ailleurs, c’est dans cette partie configuration qu’on peut indiquer le (...) -
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 (...)
Sur d’autres sites (9323)
-
Why Matomo is a serious alternative to Google Analytics 360
12 décembre 2018, par Jake Thornton — Marketing -
Concatenate mp4 video files on iOS using Libavformat
3 mars 2017, par FelixI need to merge (i.e. concatenate) multiple video files (using H.264 codec) in an iOS application. The problem is I can’t use AVFoundation because it can’t handle the video format on iOS (no problem on MacOS). So I tried to use the FFmpeg library, specifically Libavformat for this task. I found C code that looks useful here : http://stackoverflow.com/a/16293046. But i can’t get it to work and don’t understand it completly. The output video file appears to play only black frames. I’m using the precompiled libraries from the FFmpeg CocoaPod.
I was able to convert a single test video (which has 1GB) using the command line tool on my Mac :
$ ffmpeg -i input.mp4 -vcodec copy output.mp4
ffmpeg version 3.2.4-tessus Copyright (c) 2000-2017 the FFmpeg developers
built with Apple LLVM version 8.0.0 (clang-800.0.42.1)
configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libass --enable-libbluray --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzmq --enable-version3 --disable-ffplay --disable-indev=qtkit --disable-indev=x11grab_xcb
libavutil 55. 34.101 / 55. 34.101
libavcodec 57. 64.101 / 57. 64.101
libavformat 57. 56.101 / 57. 56.101
libavdevice 57. 1.100 / 57. 1.100
libavfilter 6. 65.100 / 6. 65.100
libswscale 4. 2.100 / 4. 2.100
libswresample 2. 3.100 / 2. 3.100
libpostproc 54. 1.100 / 54. 1.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: mp42mp41isomiso2
creation_time : 2016-09-14T14:35:53.000000Z
Duration: 00:04:32.29, start: 0.000000, bitrate: 30013 kb/s
Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 29958 kb/s, 50 fps, 50 tbr, 5k tbn, 100 tbc (default)
Metadata:
creation_time : 2016-09-14T14:35:53.000000Z
handler_name : VideoHandler
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
Metadata:
creation_time : 2016-09-14T14:35:53.000000Z
handler_name : SoundHandler
Output #0, mp4, to 'output.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: mp42mp41isomiso2
encoder : Lavf57.56.101
Stream #0:0(eng): Video: h264 (Main) ([33][0][0][0] / 0x0021), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 29958 kb/s, 50 fps, 50 tbr, 10k tbn, 5k tbc (default)
Metadata:
creation_time : 2016-09-14T14:35:53.000000Z
handler_name : VideoHandler
Stream #0:1(eng): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 128 kb/s (default)
Metadata:
creation_time : 2016-09-14T14:35:53.000000Z
handler_name : SoundHandler
encoder : Lavc57.64.101 aac
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
frame=13577 fps=1280 q=-1.0 Lsize= 997604kB time=00:04:32.28 bitrate=30013.7kbits/s speed=25.7x
video:993034kB audio:4268kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.030246%
[aac @ 0x7fa849809e00] Qavg: 942.999This process is very fast (10 seconds) and I can play the resulting video on iOS using AVFoundation frameworks. If i could do the same for each input video using Libavformat in my iOS app i could solve my problem by merging the videos in a second step using
AVAssetExportSession
.Any help is appreciated.
-
Video files are not opening for sample applications in Info Sphere Streams
10 mars 2017, par Pavan KumarI am new to IBM Info Sphere Streams, I read an article which says IBM Info Sphere streams is capable of doing Image processing. After some research I got to know that, we have to install OpenCV and FFMpeg lybraries with its dependecies. I have installed all of them and tried sample applications. I can run applications which contains Images as input, but when it comes to processing with videos it’s not working. I am unable to use x11viewer operator as well. I am getting the following error while working with sample videos.
(Streams com.ibm.streamsx.opencv::X11Viewer operator:7889): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed
28 Feb 2017 14:00:34.672 [7889] ERROR #splapptrc,J[0],P[0],vid0,spl_pe M[PEImpl.cpp:process:1270] - CDISR5079E: An exception occurred during the processing of the processing element. The error is: Unable to open camera {0}.I did not install any GPU device drivers here but when I used the following commands I am getting results like below,
[streamsadmin@streamsqse output]$ lspci | grep VGA
00:0f.0 VGA compatible controller: VMware SVGA II Adapter
[streamsadmin@streamsqse output]$ find /dev -group video
/dev/fb0
/dev/dri/card0
/dev/dri/renderD128
/dev/dri/controlD64
/dev/agpgartand
glxinfo | grep -i vendor
server glx vendor string: SGI
client glx vendor string: Mesa Project and SGI
OpenGL vendor string: VMware, IncMy doubt here is, whether I have installed GPU Drivers properly or do I need to install them again ? Can anyone help me to resolve this issue.
And I am unable to open those videos by using any player as well.