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MediaSPIP 0.1 Beta version
25 avril 2011, parMediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
The zip file provided here only contains the sources of MediaSPIP in its standalone version.
To get a working installation, you must manually install all-software dependencies on the server.
If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...) -
MediaSPIP version 0.1 Beta
16 avril 2011, parMediaSPIP 0.1 beta est la première version de MediaSPIP décrétée comme "utilisable".
Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
Pour avoir une installation fonctionnelle, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...) -
Amélioration de la version de base
13 septembre 2013Jolie sélection multiple
Le plugin Chosen permet d’améliorer l’ergonomie des champs de sélection multiple. Voir les deux images suivantes pour comparer.
Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...)
Sur d’autres sites (13403)
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How do I alter my FFMPEG command to make my HTTP Live Streams more efficient ?
17 octobre 2014, par RobertI want to reduce the muxing overhead when creating .ts files using FFMPEG.
Im using FFMPEG to create a series of transport stream files used for HTTP live streaming.
./ffmpeg -i myInputFile.ismv \
-vcodec copy \
-acodec copy \
-bsf h264_mp4toannexb \
-map 0 \
-f segment \
-segment_time 10\
-segment_list_size 999999 \
-segment_list output/myVarientPlaylist.m3u8 \
-segment_format mpegts \
output/myAudioVideoFile-%04d.tsMy input is in ismv format and contains a video and audio stream :
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 320x240, 348 kb/s, 29.97 tbr, 10000k tbn, 59.94 tbc
Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 63 kb/sThere is an issues related to muxing that is causing a large amout of overhead to be added to the streams. This is how the issue was described to me for the audio :
So for a given aac stream, the overhead will be 88% (since 200 bytes will map to 2 x 188 byte packets).
For video, the iframe packets are quite large, so they translate nicely into .ts packets, however, the diffs can be as small as an audio packet, therefore they suffer from the same issue.
The solution is to combine several aac packets into one larger stream before packaging them into .ts. Is this possible out of the box with FFMPEG ?
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Revision 17292 : Update Skeleton/OggIndex support to Skeleton 4.0. ffmpeg2theora now ...
16 juin 2010, par j — LogUpdate Skeleton/OggIndex ? support to Skeleton 4.0.
ffmpeg2theora now writes Skeleton 4.0 with index by default.
Patch by Chris Pearce -
can't read mp4 in opencv3.2 (ubuntu, python3)
28 mars 2017, par lhkI’ve ran into a problem with my opencv installation, it is unable to open an mp4 video. My system is ubuntu 16.04, 64bit, opencv3.2 used from python 3.5.
VideoCapture.read
returnsFalse
andNone
.There are other questions with this problem, but they target different platforms or different opencv versions.
Apparently, I’m missing the proper codec.
So I ranmake uninstall
from my build directory, purgedopencv*
with apt and built from source again. This time making sure thatffmpeg
was installed before the compilation.Here are my steps :
- clone opencv and opencv_contrib
cd opencv/
mkdir build
cd build
cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D INSTALL_PYTHON_EXAMPLES=ON -D INSTALL_C_EXAMPLES=OFF -D OPENCV_EXTRA_MODULES_PATH=../../opencv_contrib/modules -D BUILD_EXAMPLES=ON ..
make -j 8
sudo make install
I checked the output of cmake, ffmpeg is there :
Video I/O:
-- DC1394 1.x: NO
-- DC1394 2.x: NO
-- FFMPEG: YES
-- avcodec: YES (ver 56.60.100)
-- avformat: YES (ver 56.40.101)
-- avutil: YES (ver 54.31.100)
-- swscale: YES (ver 3.1.101)
-- avresample: NO
-- GStreamer: NO
-- OpenNI: NO
-- OpenNI PrimeSensor Modules: NO
-- OpenNI2: NO
-- PvAPI: NO
-- GigEVisionSDK: NO
-- Aravis SDK: NO
-- UniCap: NO
-- UniCap ucil: NO
-- V4L/V4L2: NO/YES
-- XIMEA: NO
-- Xine: NO
-- gPhoto2: NOBut the problem persists. How can I fix this ?
UPDATE
I had to manually remove some .so files from /usr/local.
Then I installed all avi related codecs I could find.
https://wiki.ubuntuusers.de/Codecs/
plus libavcodec-extra and ffmpegThen I recompiled and now it works.