Recherche avancée
Autres articles (109)
-
Gestion des droits de création et d’édition des objets
8 février 2011, parPar défaut, beaucoup de fonctionnalités sont limitées aux administrateurs mais restent configurables indépendamment pour modifier leur statut minimal d’utilisation notamment : la rédaction de contenus sur le site modifiables dans la gestion des templates de formulaires ; l’ajout de notes aux articles ; l’ajout de légendes et d’annotations sur les images ;
-
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 (...)
-
Dépôt de média et thèmes par FTP
31 mai 2013, parL’outil MédiaSPIP traite aussi les média transférés par la voie FTP. Si vous préférez déposer par cette voie, récupérez les identifiants d’accès vers votre site MédiaSPIP et utilisez votre client FTP favori.
Vous trouverez dès le départ les dossiers suivants dans votre espace FTP : config/ : dossier de configuration du site IMG/ : dossier des média déjà traités et en ligne sur le site local/ : répertoire cache du site web themes/ : les thèmes ou les feuilles de style personnalisées tmp/ : dossier de travail (...)
Sur d’autres sites (14068)
-
Building ffmpeg-kit for Android fails with arm-linux-androideabi-strip not found
8 juillet 2022, par dnzI am trying to build ffmpeg-kit for Android with "android.sh". The build.log ends with :


^~~~~~~~~~~~~~~~~~~~~
In file included from :370:
<command line="line">:13:9: warning: '__ANDROID_API__' macro redefined [-Wmacro-redefined]
#define __ANDROID_API__ 24
 ^
:363:9: note: previous definition is here
#define __ANDROID_API__ __ANDROID_MIN_SDK_VERSION__
 ^
6 warnings generated.
GEN libavdevice/libavdevice.pc
1 warning generated.
GEN libavfilter/libavfilter.pc
1 warning generated.
GEN libavformat/libavformat.pc
1 warning generated.
GEN libavcodec/libavcodec.pc
1 warning generated.
GEN libswresample/libswresample.pc
1 warning generated.
GEN libswscale/libswscale.pc
1 warning generated.
GEN libavutil/libavutil.pc
</command>

...


INSTALL doc/examples/scaling_video.c
INSTALL doc/examples/README
INSTALL doc/examples/Makefile
INSTALL libavdevice/libavdevice.so
STRIP install-libavdevice-shared
/bin/sh: 1: arm-linux-androideabi-strip: not found
make: *** [ffbuild/library.mak:104: install-libavdevice-shared] Error 127


I have no idea what goes wrong. I have cloned the github repository again, with the same result.


-
Errors while building customised ffmpeg4.1 with opencv
26 décembre 2019, par geo-freakI am trying to build my customised ffmpeg of version 4.1. As we know that ffmpeg4.1 needs libavcodec.so.58 and other related libraries(newest). I have some functions related to opencv in my code such as cvLoadImage and other. I updated the libopencv-highgui-dev, libopencv_core-dev and libopencv_imgproc-dev libraries. When I run the makefile I got the following errors,
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_free_packet@LIBAVCODEC_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_write_frame@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_frame_alloc@LIBAVUTIL_55'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avformat_free_context@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avformat_write_header@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_rescale_q@LIBAVUTIL_55'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_write_trailer@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `sws_getCachedContext@LIBSWSCALE_4'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avcodec_find_encoder@LIBAVCODEC_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_free@LIBAVUTIL_55'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avcodec_encode_video2@LIBAVCODEC_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_seek_frame@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_lockmgr_register@LIBAVCODEC_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avcodec_decode_video2@LIBAVCODEC_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avcodec_open2@LIBAVCODEC_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_malloc@LIBAVUTIL_55'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avio_close@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_init_packet@LIBAVCODEC_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_log_set_level@LIBAVUTIL_55'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avpicture_get_size@LIBAVCODEC_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avformat_get_riff_video_tags@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avformat_close_input@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avpicture_fill@LIBAVCODEC_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avformat_network_init@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avformat_find_stream_info@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avcodec_close@LIBAVCODEC_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_guess_codec@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avio_open@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_guess_format@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avformat_open_input@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_register_all@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `sws_getContext@LIBSWSCALE_4'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avformat_new_stream@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_frame_free@LIBAVUTIL_55'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_sub_q@LIBAVUTIL_55'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_freep@LIBAVUTIL_55'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avcodec_find_decoder@LIBAVCODEC_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `sws_freeContext@LIBSWSCALE_4'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `sws_scale@LIBSWSCALE_4'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avformat_alloc_context@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_read_frame@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `av_codec_get_id@LIBAVFORMAT_57'
/usr/lib/x86_64-linux-gnu/libopencv_highgui.so: undefined reference to `avcodec_flush_buffers@LIBAVCODEC_57'
collect2: error: ld returned 1 exit status
make: *** [new-ffmpeg] Error 1I have clearly linked the newest libraries and included them in my makefile. Errors list suggesting me that, libopencv-highgui.so is pointing to libavcodec.57 version api’s. Has opencv not upgraded to support libavXX.so.58 libs ? or am I doing anything wrong here.
Please help me with this, or any suggestions would be helpful.
-
Building ffmpeg libraries for third party usage
23 mars 2023, par mikeProgrammerI am trying to create bindings for FFmpeg in Elixir programming language and would love to handle FFmpeg binaries for users of my library.


The whole flow is as follows :


- 

- Write some function definition in Elixir
- Implement it in in C using ffmpeg libs
- Compile C code as shared library
- When running application, Erlang Virtual Machine will load my dynamic library










The question is how to compile and include ffmpeg libs in my shared lib so that users of my Elixir lib don't have to install any native dependencies.


Here is what I was trying :


- 

-
Compile ffmpeg libs as shared ones. When my Elixir lib is compiling, it downloads precompiled ffmpeg archive, extracts its content and links to it when compiling native functions. I realized that this still won't work as ffmpeg shared libs depend on other shared libs that user has to install on their own.


-
Compile ffmpeg libs as static ones and include them in my native shared library using —whole-archive linker option. Here I am getting








/usr/bin/ld : ffmpeg_build/lib/libavcodec.a(vp9lpf_16bpp.o) : warning : relocation against
ff_pw_1' in read-only section.text'
/usr/bin/ld : ffmpeg_build/lib/libavcodec.a(cavsdsp.o) : relocation R_X86_64_PC32 against symbol `ff_pw_5' can not be used when making a shared object ; recompile with -fPIC
/usr/bin/ld : final link failed : bad value
collect2 : error : ld returned 1 exit status

The command I am using


cc -fPIC -I/home/michal/.asdf/installs/erlang/25.1/erts-13.1/include -Iffmpeg_build/include -Ic_src/xav -shared -DXAV_DEBUG=1 c_src/xav/xav_nif.c c_src/xav/reader.c c_src/xav/utils.c -o /home/michal/Repos/xav/_build/test/lib/xav/priv/libxav.so -Lffmpeg_build/lib -Wl,--whole-archive -lavcodec -lswscale -lavutil -lavformat -Wl,--no-whole-archive


FFmpeg configuration


./configure \
--prefix="$PWD/ffmpeg_build" \
--extra-cflags="-fPIC -I$PWD/ffmpeg_build/include" \
--extra-ldflags="-L$PWD/ffmpeg_build/lib" \
--enable-pic
--disable-programs


Does anything that I am trying to do make sense to you ?


When I am installing ffmpeg-libs package on Fedora, it depends on other shared libs that are automatically downlaoded but what I would love to achieve is to provide self-contained ffmpeg build that can be used in other shared libraries.


Syndiquer tout le site
