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Médias (91)

Autres articles (81)

  • Support de tous types de médias

    10 avril 2011

    Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)

  • List of compatible distributions

    26 avril 2011, par

    The table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
    If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...)

  • Automated installation script of MediaSPIP

    25 avril 2011, par

    To overcome the difficulties mainly due to the installation of server side software dependencies, an "all-in-one" installation script written in bash was created to facilitate this step on a server with a compatible Linux distribution.
    You must have access to your server via SSH and a root account to use it, which will install the dependencies. Contact your provider if you do not have that.
    The documentation of the use of this installation script is available here.
    The code of this (...)

Sur d’autres sites (11947)

  • fluent-ffmpeg throwing SIGSEGV in nodejs

    22 mars 2023, par C G

    I am using fluent-ffmpeg to resize a video, split into frames, etc.
Here's my code :

    


    ffmpeg("./uploads/video.mp4")
    .output("./uploads/small-video.mp4")
    .noAudio()
    .size('320x?')
    .on('end', function() {
        extractVideoFrames("./uploads/small-video.mp4")
    })
    .run()


    


    I am getting a SIGSEGV error, which I suspect might be because of some weird memory issue ?
Here's the error :

    


    Error: ffmpeg was killed with signal SIGSEGV&#xA;    at ChildProcess.<anonymous> (/home/admin/superformweb/node_modules/fluent-ffmpeg/lib/processor.js:180:22)&#xA;    at ChildProcess.emit (node:events:513:28)&#xA;    at ChildProcess._handle.onexit (node:internal/child_process:291:12)&#xA;Emitted &#x27;error&#x27; event on FfmpegCommand instance at:&#xA;    at emitEnd (/home/admin/superformweb/node_modules/fluent-ffmpeg/lib/processor.js:424:16)&#xA;    at /home/admin/superformweb/node_modules/fluent-ffmpeg/lib/processor.js:433:16&#xA;    at wrapper (/home/admin/superformweb/node_modules/async/dist/async.js:271:20)&#xA;    at next (/home/admin/superformweb/node_modules/async/dist/async.js:5795:24)&#xA;    at /home/admin/superformweb/node_modules/async/dist/async.js:327:20&#xA;    at wrapper (/home/admin/superformweb/node_modules/async/dist/async.js:271:20)&#xA;    at next (/home/admin/superformweb/node_modules/async/dist/async.js:5795:24)&#xA;    at /home/admin/superformweb/node_modules/async/dist/async.js:327:20&#xA;    at /home/admin/superformweb/node_modules/fluent-ffmpeg/lib/capabilities.js:519:16&#xA;    at handleExit (/home/admin/superformweb/node_modules/fluent-ffmpeg/lib/processor.js:170:11)&#xA;&#xA;</anonymous>

    &#xA;

    I have installed ffmpeg first : sudo apt-get install ffmpeg&#xA;Then I installed node packages :

    &#xA;

    npm install ffmpeg&#xA;npm install fluent-ffmpeg&#xA;

    &#xA;

  • how to combine multiple ffmpeg commands into one command ?

    22 juin 2023, par sonam

    Right now, I am running separate commands to reduce volume, add fade in at start and fade out audio at end, add silence to start and end of audio. How do I combine all these single command into one ?

    &#xA;

    ffmpeg -y -i /home/music/memories.mp3 -filter:a "volume=0.5" -write_xing 0 /home/music/memories-volume.mp3&#xA;ffmpeg -y -i /home/music/memories-volume.mp3 -af "afade=in:st=0:d=5,afade=t=out:st=5:d=5" -write_xing 0 /home/music/memories-fade.mp3&#xA;ffmpeg -y -i /home/music/memories-fade.mp3 -af areverse,apad=pad_dur=5s,areverse -write_xing 0 /home/music/memories-silence-front.mp3&#xA;ffmpeg -y -i /home/music/memories-silence-front.mp3  -af apad=pad_dur=5s -write_xing 0 /home/music/memories-silence-end.mp3&#xA;

    &#xA;

  • libswresample/swresamplec : Err num(negative-size) was used as a function parameter

    8 décembre 2021, par Yu Yang
    libswresample/swresamplec : Err num(negative-size) was used as a function parameter

    If memory allocation fails, ERROR(ENOMEM) '-12' will be returned.
    
When resample() is done first, the negative size param would cause buffer-overflow and SEGV in swri_rematrix().
    
When swri_rematrix() is run first, resample() would not cause an error but Err num as a wrong parameter passing.
    
Err num should be returned immediately. And remove an unneeded term from an assert.
    

    coredump info :
    
    #0 0x499517 in posix_memalign (/home/r1/ffmpeg/ffmpeg_4.4.1+0x499517)
    
    #1 0x6c1f0b4 in av_malloc /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libavutil/mem.c:86:9
    
    #2 0x6c208fe in av_mallocz /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libavutil/mem.c:239:17
    
    #3 0x6c207ad in av_mallocz_array /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libavutil/mem.c:195:12
    
    #4 0x654b2e5 in swri_realloc_audio /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libswresample/swresample.c:418:14
    
    #5 0x654f9a1 in swr_convert_internal /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libswresample/swresample.c:601:17
    
    #6 0x654d2c0 in swr_convert /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libswresample/swresample.c:766:19
    
    #7 0x186cf56 in flush_frame /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libavfilter/af_aresample.c:251:13
    
    #8 0x186a454 in request_frame /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libavfilter/af_aresample.c:288:20
    
    #9 0x787d9c in ff_request_frame_to_filter /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libavfilter/avfilter.c:459:15
    
    #10 0x7877f1 in forward_status_change /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libavfilter/avfilter.c:1257:19
    
    #11 0x77ed7e in ff_filter_activate_default /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libavfilter/avfilter.c:1288:20
    
    #12 0x77e4e1 in ff_filter_activate /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libavfilter/avfilter.c:1441:11
    
    #13 0x793b3f in ff_filter_graph_run_once /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libavfilter/avfiltergraph.c:1403:12
    
    #14 0x7a7bee in get_frame_internal /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libavfilter/buffersink.c:131:19
    
    #15 0x7a7287 in av_buffersink_get_frame_flags /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libavfilter/buffersink.c:142:12
    
    #16 0x792888 in avfilter_graph_request_oldest /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libavfilter/avfiltergraph.c:1356:17
    
    #17 0x5d07df in transcode_from_filter /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/fftools/ffmpeg.c:4639:11
    
    #18 0x59e557 in transcode_step /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/fftools/ffmpeg.c:4729:20
    
    #19 0x593970 in transcode /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/fftools/ffmpeg.c:4805:15
    
    #20 0x58f7a4 in main /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/fftools/ffmpeg.c:5010:9
    
    #21 0x7f6fd2dee0b2 in __libc_start_main /build/glibc-eX1tMB/glibc-2.31/csu/../csu/libc-start.c:308:16
    

    SUMMARY : AddressSanitizer : negative-size-param (/home/r1/ffmpeg/ffmpeg_4.4.1+0x497e67) in __asan_memcpy
    

    Reported-by : TOTE Robot <oslab@tsinghua.edu.cn>
    
Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
    • [DH] libswresample/swresample.c

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