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Autres articles (12)

  • Emballe médias : à quoi cela sert ?

    4 février 2011, par

    Ce plugin vise à gérer des sites de mise en ligne de documents de tous types.
    Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ;

  • Contribute to a better visual interface

    13 avril 2011

    MediaSPIP is based on a system of themes and templates. Templates define the placement of information on the page, and can be adapted to a wide range of uses. Themes define the overall graphic appearance of the site.
    Anyone can submit a new graphic theme or template and make it available to the MediaSPIP community.

  • Support audio et vidéo HTML5

    10 avril 2011

    MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
    Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
    Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
    Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...)

Sur d’autres sites (3068)

  • Using ffmpeg, extract small part of .m4a audio file and set extract file duration correctly

    30 août 2015, par Kes

    I have Linux mint 17.1.

    When I use ffmpeg to cut out a section of a 4 hour long .m4a audio file as follows :

    ffmpeg -ss 0:10:00 -i in_file.m4a -vn -c copy -t 0:40:00 out_file.m4a

    the correct position and duration of extract is extracted and the file plays just fine, but the audio duration meta-tag in the playback player is incorrectly shown as 4 hours.

    How can I set the actual extract duration so it is correct, in this case 30mins, or even better get ffmpeg to calculate it and set it properly ?

    Thank you

  • configure.ac : Pass -fno-inline-small-functions when using GCC 4.7

    8 juin 2015, par Mario Sanchez Prada
    configure.ac : Pass -fno-inline-small-functions when using GCC 4.7

    For some reason, the build fails when using GCC 4.7 due to the implicit

    - finline-functions option passed to the compiler when -O3 is enabled,
    
which does not happen in newer versions of GCC, probably due to some of
    
the "General Optimizer Improvements" included in 4.8 (see [1]).
    

    Fortunately, we don’t need to disable -finline-functions completely but
    
just do it for "small functions", which is what this patch does.
    

    [1] https://gcc.gnu.org/gcc-4.8/changes.html
    

    Closes : https://sourceforge.net/p/flac/bugs/429/
    
Signed-off-by : Erik de Castro Lopo <erikd@mega-nerd.com>
    • [DH] configure.ac

  • Shotdetect : compiling error ("undefined reference")

    8 juillet 2015, par Voprosnik

    I am using Cygwin and I trying to install the program Shotdetect. I downloaded the source with git and also downloaded, compiled and installed ffmpeg through git.

    Installation of shotdetect doesn’t follow the ./configure && make && make install routine, but a cmake system of which I have no experience. Nonetheless there is a script that automates compiling and installation.

    Near the final stages of the compiling, I get a long series of errors concerning some ffmpeg modules :

    Linking CXX executable shotdetect-cmd.exe
    
/usr/local/lib/libavformat.a(matroskadec.o): In function `matroska_decode_buffer':
    
/git/ffmpeg/libavformat/matroskadec.c:1321: undefined reference to `BZ2_bzDecompressInit'
    
/git/ffmpeg/libavformat/matroskadec.c:1336: undefined reference to `BZ2_bzDecompress'
    
/git/ffmpeg/libavformat/matroskadec.c:1329: undefined reference to `BZ2_bzDecompressEnd'
    
/git/ffmpeg/libavformat/matroskadec.c:1339: undefined reference to `BZ2_bzDecompressEnd'
    
/usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_subpacket':
    
/git/ffmpeg/libavcodec/opusdec.c:374: undefined reference to `swr_is_initialized'
    
/usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_frame':
    
/git/ffmpeg/libavcodec/opusdec.c:220: undefined reference to `swr_is_initialized'
    
/usr/local/lib/libavcodec.a(opusdec.o): In function `opus_init_resample':
    
/git/ffmpeg/libavcodec/opusdec.c:161: undefined reference to `swr_init'
    
/git/ffmpeg/libavcodec/opusdec.c:167: undefined reference to `swr_convert'
    
/usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_frame':
    
/git/ffmpeg/libavcodec/opusdec.c:234: undefined reference to `swr_convert'
    
/usr/local/lib/libavcodec.a(opusdec.o): In function `opus_flush_resample':
    
/git/ffmpeg/libavcodec/opusdec.c:115: undefined reference to `swr_convert'
    
/usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_subpacket':
    
/git/ffmpeg/libavcodec/opusdec.c:406: undefined reference to `swr_close'
    
/usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_flush':
    
/git/ffmpeg/libavcodec/opusdec.c:567: undefined reference to `swr_close'
    
/usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_close':
    
/git/ffmpeg/libavcodec/opusdec.c:589: undefined reference to `swr_free'
    
/usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_init':
    
/git/ffmpeg/libavcodec/opusdec.c:642: undefined reference to `swr_alloc'
    
/usr/local/lib/libavcodec.a(tiff.o): In function `tiff_uncompress_lzma':
    
/git/ffmpeg/libavcodec/tiff.c:396: undefined reference to `lzma_stream_decoder'
    
/git/ffmpeg/libavcodec/tiff.c:401: undefined reference to `lzma_code'
    
/git/ffmpeg/libavcodec/tiff.c:402: undefined reference to `lzma_end'
    
/usr/local/lib/libavcodec.a(utils.o): In function `recode_subtitle':
    
/git/ffmpeg/libavcodec/utils.c:2672: undefined reference to `libiconv_open'
    
/git/ffmpeg/libavcodec/utils.c:2707: undefined reference to `libiconv_close'
    
/git/ffmpeg/libavcodec/utils.c:2693: undefined reference to `libiconv'
    
/git/ffmpeg/libavcodec/utils.c:2694: undefined reference to `libiconv'
    
/git/ffmpeg/libavcodec/utils.c:2707: undefined reference to `libiconv_close'
    
/git/ffmpeg/libavcodec/utils.c:2707: undefined reference to `libiconv_close'
    
/git/ffmpeg/libavcodec/utils.c:2707: undefined reference to `libiconv_close'
    
/usr/local/lib/libavcodec.a(utils.o): In function `avcodec_open2':
    
/git/ffmpeg/libavcodec/utils.c:1698: undefined reference to `libiconv_open'
    
/git/ffmpeg/libavcodec/utils.c:1705: undefined reference to `libiconv_close'
    
collect2: error: ld returned 1 exit status
    
clang: error: linker (via gcc) command failed with exit code 1 (use -v to see invocation)
    
CMakeFiles/shotdetect-cmd.dir/build.make:122: recipe for target 'shotdetect-cmd.exe' failed
    
make[2]: *** [shotdetect-cmd.exe] Error 1
    
CMakeFiles/Makefile2:95: recipe for target 'CMakeFiles/shotdetect-cmd.dir/all' failed
    
make[1]: *** [CMakeFiles/shotdetect-cmd.dir/all] Error 2
    
Makefile:117: recipe for target 'all' failed
    
make: *** [all] Error 2

    Searching online for similar errors, I found the following proposed solutions

    1) fix pkg-config setup so configure will find out all dependencies ;

    2) build ffmpeg (libavcodec) without external dependencies ;

    3) add external dependencies manually with configure —extra-ldflags

    I guess the problem lies on how i compiled ffmpeg (just configure with no options) but other than that have no idea what to do with either of the above suggestions. Should I recompile ffmpeg with different options ?

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