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Autres articles (55)

  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

  • Selection of projects using MediaSPIP

    2 mai 2011, par

    The examples below are representative elements of MediaSPIP specific uses for specific projects.
    MediaSPIP farm @ Infini
    The non profit organizationInfini develops hospitality activities, internet access point, training, realizing innovative projects in the field of information and communication technologies and Communication, and hosting of websites. It plays a unique and prominent role in the Brest (France) area, at the national level, among the half-dozen such association. Its members (...)

  • Gestion générale des documents

    13 mai 2011, par

    MédiaSPIP ne modifie jamais le document original mis en ligne.
    Pour chaque document mis en ligne il effectue deux opérations successives : la création d’une version supplémentaire qui peut être facilement consultée en ligne tout en laissant l’original téléchargeable dans le cas où le document original ne peut être lu dans un navigateur Internet ; la récupération des métadonnées du document original pour illustrer textuellement le fichier ;
    Les tableaux ci-dessous expliquent ce que peut faire MédiaSPIP (...)

Sur d’autres sites (3656)

  • ffmpeg link error with CodeBlocks

    12 juillet 2016, par Yoohoo

    Hi，I am currently doing a real time video encoding c program using ffmpeg, initially I encountered a lot of "undefined reference" error, after I set the linker in build options, some error got disappeared, but still some error remains.

    ||=== Build: Debug in c_3rd party encoding (compiler: GNU GCC Compiler)     ===|
    
/home/yonghao/codeblocksfile/c_3rd party encoding/main.c||In function     ‘init_video_encode’:|
    
/home/yonghao/codeblocksfile/c_3rd party encoding/main.c|73|warning: ‘avcodec_alloc_frame’ is deprecated (declared at ../../ffmpeg_build/include/libavcodec/avcodec.h:3618) [-Wdeprecated-declarations]|
    
/home/yonghao/codeblocksfile/c_3rd party encoding/main.c||In function ‘cancle_encode’:|
    
/home/yonghao/codeblocksfile/c_3rd party encoding/main.c|134|warning: ‘avcodec_free_frame’ is deprecated (declared at ../../ffmpeg_build/include/libavcodec/avcodec.h:3643) [-Wdeprecated-declarations]|
    
/home/yonghao/codeblocksfile/c_3rd party encoding/main.c|21|warning: ‘endcode’ defined but not used [-Wunused-variable]|
    
../../ffmpeg_build/lib/libavcodec.a(libmp3lame.o)||In function `mp3lame_encode_frame':|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libmp3lame.c|211|undefined reference to `lame_encode_buffer_float'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libmp3lame.c|195|undefined reference to `lame_encode_buffer'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libmp3lame.c|198|undefined reference to `lame_encode_buffer_int'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libmp3lame.c|219|undefined reference to `lame_encode_flush'|
    
../../ffmpeg_build/lib/libavcodec.a(libmp3lame.o)||In function `mp3lame_encode_close':|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libmp3lame.c|86|undefined reference to `lame_close'|
    
../../ffmpeg_build/lib/libavcodec.a(libmp3lame.o)||In function `mp3lame_encode_init':|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libmp3lame.c|98|undefined reference to `lame_init'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libmp3lame.c|102|undefined reference to `lame_set_num_channels'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libmp3lame.c|103|undefined reference to `lame_set_mode'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libmp3lame.c|106|undefined reference to `lame_set_in_samplerate'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libmp3lame.c|107|undefined reference to `lame_set_out_samplerate'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libmp3lame.c|111|undefined reference to `lame_set_quality'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libmp3lame.c|115|undefined reference to `lame_set_VBR'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libmp3lame.c|116|undefined reference to `lame_set_VBR_quality'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libmp3lame.c|120|undefined reference to `lame_set_VBR'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libmp3lame.c|121|undefined reference to `lame_set_VBR_mean_bitrate_kbps'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libmp3lame.c|123|undefined reference to `lame_set_brate'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libmp3lame.c|128|undefined reference to `lame_set_bWriteVbrTag'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libmp3lame.c|131|undefined reference to `lame_set_disable_reservoir'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libmp3lame.c|134|undefined reference to `lame_init_params'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libmp3lame.c|140|undefined reference to `lame_get_encoder_delay'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libmp3lame.c|143|undefined reference to `lame_get_framesize'|
    
../../ffmpeg_build/lib/libavcodec.a(libopusdec.o)||In function `libopus_flush':|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusdec.c|178|undefined reference to `opus_multistream_decoder_ctl'|
    
../../ffmpeg_build/lib/libavcodec.a(libopusdec.o)||In function `libopus_decode':|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusdec.c|143|undefined reference to `opus_multistream_decode_float'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusdec.c|139|undefined reference to `opus_multistream_decode'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusdec.c|148|undefined reference to `opus_strerror'|
    
../../ffmpeg_build/lib/libavcodec.a(libopusdec.o)||In function `libopus_decode_close':|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusdec.c|121|undefined reference to `opus_multistream_decoder_destroy'|
    
../../ffmpeg_build/lib/libavcodec.a(libopusdec.o)||In function `libopus_decode_init':|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusdec.c|87|undefined reference to `opus_multistream_decoder_create'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusdec.c|91|undefined reference to `opus_strerror'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusdec.c|97|undefined reference to `opus_multistream_decoder_ctl'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusdec.c|99|undefined reference to `opus_strerror'|
    
../../ffmpeg_build/lib/libavcodec.a(libopusenc.o)||In function `libopus_encode':|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusenc.c|346|undefined reference to `opus_multistream_encode'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusenc.c|342|undefined reference to `opus_multistream_encode_float'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusenc.c|351|undefined reference to `opus_strerror'|
    
../../ffmpeg_build/lib/libavcodec.a(libopusenc.o)||In function `libopus_encode_close':|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusenc.c|389|undefined reference to `opus_multistream_encoder_destroy'|
    
../../ffmpeg_build/lib/libavcodec.a(libopusenc.o)||In function `libopus_encode_init':|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusenc.c|254|undefined reference to `opus_multistream_encoder_create'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusenc.c|260|undefined reference to `opus_strerror'|
    
../../ffmpeg_build/lib/libavcodec.a(libopusenc.o)||In function `libopus_configure_encoder':|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusenc.c|117|undefined reference to `opus_multistream_encoder_ctl'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusenc.c|119|undefined reference to `opus_strerror'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusenc.c|124|undefined reference to `opus_multistream_encoder_ctl'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusenc.c|127|undefined reference to `opus_strerror'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusenc.c|130|undefined reference to `opus_multistream_encoder_ctl'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusenc.c|132|undefined reference to `opus_strerror'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusenc.c|135|undefined reference to `opus_multistream_encoder_ctl'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusenc.c|138|undefined reference to `opus_strerror'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusenc.c|141|undefined reference to `opus_multistream_encoder_ctl'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusenc.c|144|undefined reference to `opus_strerror'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusenc.c|149|undefined reference to `opus_multistream_encoder_ctl'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusenc.c|152|undefined reference to `opus_strerror'|
    
../../ffmpeg_build/lib/libavcodec.a(libopusenc.o)||In function `libopus_encode_init':|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusenc.c|288|undefined reference to `opus_multistream_encoder_ctl'|
    
/home/yonghao/ffmpeg_sources/ffmpeg/libavcodec/libopusenc.c|290|undefined reference to `opus_strerror'|
    
||More errors follow but not being shown.|
    
||Edit the max errors limit in compiler options...|
    
||=== Build failed: 50 error(s), 3 warning(s) (0 minute(s), 3 second(s)) ===|

    Here are my screen shot of the CodeBlock linker setting.

    ffmpeg_build/lib/libvpx.a
    
ffmpeg_build/lib/libswscale.a
    
ffmpeg_build/lib/libwresample.a
    
ffmpeg_build/lib/libpostproc.a
    
ffmpeg_build/lib/libfdk-aac.a
    
ffmpeg_build/lib/libvutil.a
    
ffmpeg_build/lib/libvformat.a
    
ffmpeg_build/lib/libavfilter.a
    
ffmpeg_build/lib/libavdevice.a
    
ffmpeg_build/lib/libavcodec.a

    Totally 10 libs.

    My Questions :

    1. Are these errors caused by lacking libs or libs not linked.
    2. What libs I missing or what libs should I add to linker.

  • mix two audio files fmpeg Android

    21 mars 2016, par Adroid Freak

    I’m using ffmpeg for android and I’m trying to mix two audio files but I’m getting the following error

     [NULL @ 0xb60c8c00] Unable to find a suitable output format for ' -filter_complex amerge -c:a libmp3lame -q:a 4 '
    
-filter_complex amerge -c:a libmp3lame -q:a 4 : Invalid argument

    This is the ffmpeg library details when

    ffmpeg version n2.4.2 Copyright (c) 2000-2014 the FFmpeg developers
    
built on Dec 22 2014 21:35:30 with gcc 4.8 (GCC)
    
configuration: --target-os=linux --cross-prefix=/home/android/Downloads/ffmpeg-android-pie/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/android/Downloads/ffmpeg-android-pie/toolchain-android/sysroot --enable-decoders --enable-encoders --enable-filters --disable-indevs --enable-indev=lavfi --disable-outdevs --enable-hwaccels --enable-ffmpeg --enable-pic --enable-libx264 --enable-version3 --disable-debug --disable-ffserver --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/android/Downloads/ffmpeg-android-pie/ffmpeg-pkg-config --prefix=/home/android/Downloads/ffmpeg-android-pie/build/armeabi-v7a --extra-cflags='-I/home/android/Downloads/ffmpeg-android-pie/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/android/Downloads/ffmpeg-android-pie/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
    
libavutil      54.  7.100 / 54.  7.100
    
libavcodec     56.  1.100 / 56.  1.100
    
libavformat    56.  4.101 / 56.  4.101
    
libavdevice    56.  0.100 / 56.  0.100
    
libavfilter     5.  1.100 /  5.  1.100
    
libswscale      3.  0.100 /  3.  0.100
    
libswresample   1.  1.100 /  1.  1.100
    
libpostproc    53.  0.100 / 53.  0.100

    My function is this

    public Clip mixTwoAudioFiles (String audio1, String audio2, Clip out, ShellCallback sc) throws Exception
    
{
    
    ArrayList<string> cmd = new ArrayList<string>();
    

    
    cmd.add(mFfmpegBin);
    
    cmd.add("-y");
    

    
    cmd.add("-i");
    
    cmd.add(audio1);
    

    
    cmd.add("-i");
    
    cmd.add(audio2);
    
//  cmd.add("-strict");
    
//  cmd.add("-2");//experimental
    

    
    cmd.add(" -filter_complex amerge -c:a libmp3lame -q:a 4 ");   
    
    File fileOut = new File(out.path);
    
    cmd.add(fileOut.getCanonicalPath());    
    
    execFFMPEG(cmd, sc); 
    
    return out;
    

    
}
    
</string></string>

    and the output command is this

    ffmpeg -y -i /storage/emulated/0/audio1.mp3 -i /storage/emulated/0/audio2.3gp -strict -2  -filter_complex amerge -c:a libmp3lame -q:a 4  /storage/emulated/0/out.mp4

    Now as you can see above I don’t have libmp3lame enabled but it looks like the error above is not related to that, correct ?

    I tried many other filter variations but all are failing with the same error, the questions I have are as follow :

    1- Since I don't have libmp3lame, what is the next option? please note that mp3 is not mandatory here.
    
2- If it is possible can you please show me how?

  • Evolution #4628 : Intégrer la fonction slugify

    13 janvier 2021

    Oui on se demande un peu d’où sort ce terme qui semble n’avoir aucun rapport avec son utilisation dans un contexte informatique : un court terme pour identifier une ressource = une limace ???
    Il y a une explication un peu détaillée quant à son étymologie sur stack : https://stackoverflow.com/questions/4230846/what-is-the-etymology-of-slug
    Il semble être apparu de façon assez informelle et organique dans le milieu de l’édition, mais ça dit pas pourquoi ce terme a été choisi précisément.
    Bref maintenant il est utilisé tel quel « parceque c’est comme ça ».

    Pour franciser, je pense pas qu’il soit pertinent de faire une traduction littérale, l’autre option serait de trouver un nom qui traduise bien le sens du terme, à savoir selon wikipedia : « un court texte utilisable [...] pour décrire et identifier une ressource. ». Mais je vois pas trop.

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