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  • Use, discuss, criticize

    13 avril 2011, par

    Talk 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.

  • Formulaire personnalisable

    21 juin 2013, par

    Cette page présente les champs disponibles dans le formulaire de publication d’un média et il indique les différents champs qu’on peut ajouter. Formulaire de création d’un Media
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    On peut modifier ce formulaire dans la partie :
    Administration > Configuration des masques de formulaire. (...)

  • Les tâches Cron régulières de la ferme

    1er décembre 2010, par

    La gestion de la ferme passe par l’exécution à intervalle régulier de plusieurs tâches répétitives dites Cron.
    Le super Cron (gestion_mutu_super_cron)
    Cette tâche, planifiée chaque minute, a pour simple effet d’appeler le Cron de l’ensemble des instances de la mutualisation régulièrement. Couplée avec un Cron système sur le site central de la mutualisation, cela permet de simplement générer des visites régulières sur les différents sites et éviter que les tâches des sites peu visités soient trop (...)

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  • How to install dense trajectory without sudoers permission

    7 février 2019, par Albe

    I’m stuck for a week trying to install iDT(https://github.com/chuckcho/iDT) in a server hosted by university in which I don’t have root permissions. (VERSION=12.04.5 LTS)

    I tried to install the 2 main libraries (opencv and ffmpeg) following part(different versions) of this tutorial : http://dridini.blogspot.com/

    I managed (I think) to install the libraries in local :

    ffmpeg -version
    
ffmpeg version N-93084-g835ab35 Copyright (c) 2000-2019 the FFmpeg developers
    
built with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
    
configuration: --prefix=/home/XXXXX/ffmpeg_build --extra-cflags=-I/home/XXXXX/ffmpeg_build/include --extra-ldflags=-L/home/XXXXX/ffmpeg_build/lib --bindir=/home/XXXXX/bin --enable-gpl --enable-nonfree --enable-libfdk-aac --enable-libmp3lame --enable-libvorbis --enable-libx264 --enable-pic --enable-shared
    
libavutil      56. 26.100 / 56. 26.100
    
libavcodec     58. 46.100 / 58. 46.100
    
libavformat    58. 26.100 / 58. 26.100
    
libavdevice    58.  6.101 / 58.  6.101
    
libavfilter     7. 48.100 /  7. 48.100
    
libswscale      5.  4.100 /  5.  4.100
    
libswresample   3.  4.100 /  3.  4.100
    
libpostproc    55.  4.100 / 55.  4.100 
    

    
pkg-config --modversion opencv
    
2.4.13.5

    I exported the LD_LIBRARY_PATH where all .so are.(I cannot perform ldconfig after)
    But when I try to make this is the result :

    g++ -L/home/chuck/opencv-2.4.11-cuda7.5/lib -L/opt/lib -pipe -Wall -O3 -ggdb -o release/DenseTrackStab  -lopencv_core -lopencv_highgui -lopencv_video -lopencv_imgproc -lopencv_calib3d -lopencv_features2d -lopencv_nonfree -lopencv_ocl -lavformat -lavdevice -lavutil -lavcodec -lswscale
    
/usr/bin/ld: cannot find -lopencv_core
    
/usr/bin/ld: cannot find -lopencv_highgui
    
/usr/bin/ld: cannot find -lopencv_video
    
/usr/bin/ld: cannot find -lopencv_imgproc
    
/usr/bin/ld: cannot find -lopencv_calib3d
    
/usr/bin/ld: cannot find -lopencv_features2d
    
/usr/bin/ld: cannot find -lopencv_nonfree
    
/usr/bin/ld: cannot find -lopencv_ocl
    
/usr/bin/ld: cannot find -lavformat
    
/usr/bin/ld: cannot find -lavdevice
    
/usr/bin/ld: cannot find -lavutil
    
/usr/bin/ld: cannot find -lavcodec
    
/usr/bin/ld: cannot find -lswscale
    
collect2: ld returned 1 exit status
    
make: *** [release/DenseTrackStab] Error 1

    I tried to modify the makeFile in order to add there the path or typing make with ldflag ( make "LDFLAGS=-L/$HOME/lib/opencv-2.4.13.5/lib/ -L/$HOME/ffmpeg_build/lib") giving me the same result :

    g++ -L/home/XXXXX/opencv-2.4.13.5/release/lib -L/opt/lib -pipe -Wall -O3 -ggdb -o release/DenseTrackStab  -lopencv_core -lopencv_highgui -lopencv_video -lopencv_imgproc -lopencv_calib3d -lopencv_features2d -lopencv_nonfree -lopencv_ocl -lavformat -lavdevice -lavutil -lavcodec -lswscale
    
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 0 has invalid symbol index 10
    
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 1 has invalid symbol index 11
    
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 2 has invalid symbol index 2
    
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 3 has invalid symbol index 2
    
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 4 has invalid symbol index 10
    
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 5 has invalid symbol index 12
    
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 6 has invalid symbol index 12
    
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 7 has invalid symbol index 12
    
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 8 has invalid symbol index 2
    
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 9 has invalid symbol index 2

    This is the original Makefile

    # custom opencv
    
OPENCV_INC := /home/chuck/opencv-2.4.11-cuda7.5/include
    
OPENCV_LIB := /home/chuck/opencv-2.4.11-cuda7.5/lib
    

    
# set the binaries that have to be built
    
TARGETS := DenseTrackStab Video
    

    
# set the build configuration set 
    
BUILD := release
    
#BUILD := debug
    

    
# set bin and build dirs
    
BUILDDIR := .build_$(BUILD)
    
BINDIR := $(BUILD)
    

    
# libraries 
    
LDLIBS = $(addprefix -l, $(LIBS) $(LIBS_$(notdir $*)))
    
LIBS := \
    
    opencv_core opencv_highgui opencv_video opencv_imgproc opencv_calib3d opencv_features2d opencv_nonfree \
    
    opencv_ocl \
    
    avformat avdevice avutil avcodec swscale
    

    
# set some flags and compiler/linker specific commands
    
CXXFLAGS = -pipe -D __STDC_CONSTANT_MACROS -D STD=std -Wall $(CXXFLAGS_$(BUILD)) -I. -I$(OPENCV_INC) -I/opt/include
    
CXXFLAGS_debug := -ggdb
    
CXXFLAGS_release := -O3 -DNDEBUG -ggdb
    
LDFLAGS = -L$(OPENCV_LIB) -L/opt/lib -pipe -Wall $(LDFLAGS_$(BUILD))
    
LDFLAGS_debug := -ggdb
    
LDFLAGS_release := -O3 -ggdb
    

    
include make/generic.mk

    Is it possible what I’m trying to do or I must give up ? Any better solution for using this software ?
    thank you

  • How to build dense trajectory without sudoers permission

    8 février 2019, par Albe

    I’m stuck for a week trying to install iDT(https://github.com/chuckcho/iDT) in a server hosted by university in which I don’t have root permissions. (VERSION=12.04.5 LTS)

    I tried to install the 2 main libraries (opencv and ffmpeg) following part(different versions) of this tutorial : http://dridini.blogspot.com/

    I managed (I think) to install the libraries in local :

    ffmpeg -version
    
ffmpeg version N-93084-g835ab35 Copyright (c) 2000-2019 the FFmpeg developers
    
built with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
    
configuration: --prefix=/home/XXXXX/ffmpeg_build --extra-cflags=-I/home/XXXXX/ffmpeg_build/include --extra-ldflags=-L/home/XXXXX/ffmpeg_build/lib --bindir=/home/XXXXX/bin --enable-gpl --enable-nonfree --enable-libfdk-aac --enable-libmp3lame --enable-libvorbis --enable-libx264 --enable-pic --enable-shared
    
libavutil      56. 26.100 / 56. 26.100
    
libavcodec     58. 46.100 / 58. 46.100
    
libavformat    58. 26.100 / 58. 26.100
    
libavdevice    58.  6.101 / 58.  6.101
    
libavfilter     7. 48.100 /  7. 48.100
    
libswscale      5.  4.100 /  5.  4.100
    
libswresample   3.  4.100 /  3.  4.100
    
libpostproc    55.  4.100 / 55.  4.100 
    

    
pkg-config --modversion opencv
    
2.4.13.5

    I exported the LD_LIBRARY_PATH where all .so are.(I cannot perform ldconfig after)
    But when I try to make this is the result :

    g++ -L/home/chuck/opencv-2.4.11-cuda7.5/lib -L/opt/lib -pipe -Wall -O3 -ggdb -o release/DenseTrackStab  -lopencv_core -lopencv_highgui -lopencv_video -lopencv_imgproc -lopencv_calib3d -lopencv_features2d -lopencv_nonfree -lopencv_ocl -lavformat -lavdevice -lavutil -lavcodec -lswscale
    
/usr/bin/ld: cannot find -lopencv_core
    
/usr/bin/ld: cannot find -lopencv_highgui
    
/usr/bin/ld: cannot find -lopencv_video
    
/usr/bin/ld: cannot find -lopencv_imgproc
    
/usr/bin/ld: cannot find -lopencv_calib3d
    
/usr/bin/ld: cannot find -lopencv_features2d
    
/usr/bin/ld: cannot find -lopencv_nonfree
    
/usr/bin/ld: cannot find -lopencv_ocl
    
/usr/bin/ld: cannot find -lavformat
    
/usr/bin/ld: cannot find -lavdevice
    
/usr/bin/ld: cannot find -lavutil
    
/usr/bin/ld: cannot find -lavcodec
    
/usr/bin/ld: cannot find -lswscale
    
collect2: ld returned 1 exit status
    
make: *** [release/DenseTrackStab] Error 1

    I tried to modify the makeFile in order to add there the path or typing make with ldflag ( make "LDFLAGS=-L/$HOME/lib/opencv-2.4.13.5/lib/ -L/$HOME/ffmpeg_build/lib") giving me the same result :

    g++ -L/home/XXXXX/opencv-2.4.13.5/release/lib -L/opt/lib -pipe -Wall -O3 -ggdb -o release/DenseTrackStab  -lopencv_core -lopencv_highgui -lopencv_video -lopencv_imgproc -lopencv_calib3d -lopencv_features2d -lopencv_nonfree -lopencv_ocl -lavformat -lavdevice -lavutil -lavcodec -lswscale
    
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 0 has invalid symbol index 10
    
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 1 has invalid symbol index 11
    
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 2 has invalid symbol index 2
    
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 3 has invalid symbol index 2
    
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 4 has invalid symbol index 10
    
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 5 has invalid symbol index 12
    
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 6 has invalid symbol index 12
    
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 7 has invalid symbol index 12
    
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 8 has invalid symbol index 2
    
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 9 has invalid symbol index 2

    This is the original Makefile

    # custom opencv
    
OPENCV_INC := /home/chuck/opencv-2.4.11-cuda7.5/include
    
OPENCV_LIB := /home/chuck/opencv-2.4.11-cuda7.5/lib
    

    
# set the binaries that have to be built
    
TARGETS := DenseTrackStab Video
    

    
# set the build configuration set 
    
BUILD := release
    
#BUILD := debug
    

    
# set bin and build dirs
    
BUILDDIR := .build_$(BUILD)
    
BINDIR := $(BUILD)
    

    
# libraries 
    
LDLIBS = $(addprefix -l, $(LIBS) $(LIBS_$(notdir $*)))
    
LIBS := \
    
    opencv_core opencv_highgui opencv_video opencv_imgproc opencv_calib3d opencv_features2d opencv_nonfree \
    
    opencv_ocl \
    
    avformat avdevice avutil avcodec swscale
    

    
# set some flags and compiler/linker specific commands
    
CXXFLAGS = -pipe -D __STDC_CONSTANT_MACROS -D STD=std -Wall $(CXXFLAGS_$(BUILD)) -I. -I$(OPENCV_INC) -I/opt/include
    
CXXFLAGS_debug := -ggdb
    
CXXFLAGS_release := -O3 -DNDEBUG -ggdb
    
LDFLAGS = -L$(OPENCV_LIB) -L/opt/lib -pipe -Wall $(LDFLAGS_$(BUILD))
    
LDFLAGS_debug := -ggdb
    
LDFLAGS_release := -O3 -ggdb
    

    
include make/generic.mk

    Is it possible what I’m trying to do or I must give up ? Any better solution for using this software ?
    thank you

  • ffmpeg, live MPEG-TS demux & decode

    8 mai 2017, par NadavRub

    Environment

    • Ubuntu-14
    • C++
    • ffmpeg

    Use-case

    • Live SPTS is received via UDP by a 3rd party module
    • TS Packets are received iteratively
    • The TS Video (ES) should be decoded in minimal latency

    Considered Implementation

    • Upon TS packet reception, immediately push it to the TS demux
    • Once enough packets are received the video format is resolvable, create the video codec
    • Push each video packet into the video decoder
    • Once enough video packets were processed the video codec result a valid output frame

    Problem at-hand

    Can this be done w/ ffmpeg ?!?!, … using “avformat_open_input” mandate a file to read from… I need a way where I can iteratively push packets to the TS demuxer ( w/ minimal latency )…

    Does ffmpeg support the above mentioned use-case ? How ?

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