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Autres articles (8)

  • Installation en mode ferme

    4 février 2011, par

    Le mode ferme permet d’héberger plusieurs sites de type MediaSPIP en n’installant qu’une seule fois son noyau fonctionnel.
    C’est la méthode que nous utilisons sur cette même plateforme.
    L’utilisation en mode ferme nécessite de connaïtre un peu le mécanisme de SPIP contrairement à la version standalone qui ne nécessite pas réellement de connaissances spécifique puisque l’espace privé habituel de SPIP n’est plus utilisé.
    Dans un premier temps, vous devez avoir installé les mêmes fichiers que l’installation (...)

  • 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" ;

  • Configuration spécifique d’Apache

    4 février 2011, par

    Modules spécifiques
    Pour la configuration d’Apache, il est conseillé d’activer certains modules non spécifiques à MediaSPIP, mais permettant d’améliorer les performances : mod_deflate et mod_headers pour compresser automatiquement via Apache les pages. Cf ce tutoriel ; mode_expires pour gérer correctement l’expiration des hits. Cf ce tutoriel ;
    Il est également conseillé d’ajouter la prise en charge par apache du mime-type pour les fichiers WebM comme indiqué dans ce tutoriel.
    Création d’un (...)

Sur d’autres sites (1880)

  • How can we achieve textAlign="center" within box in case of multiline text using ffmpeg drawtext ? [closed]

    13 septembre 2024, par Ata MuhiUlDin

    When working with drawtext in ffmpeg, it allows to enable box to show behind the text, and also allows to assign some background color to it.

    


    But when it comes to multiline text, let's say there are three lines as shown in picture as current result :

    


    current results

    


    It never align text to center. But I want results like shown below :

    


    Required Output

    


    This time am using following ffmpeg command to draw text :

    


    -vf "drawtext=text='${text}': x=((w*${x})/${DIMENSIONS.width}): y=((h*${y})/${DIMENSIONS.height}):fontsize=36:fontcolor=yellow@0.9: box=1: boxcolor=black@0.6:boxborderw=20" -c:a copy

    


  • FFMPEG concat videos

    10 juin 2015, par Maverick

    I am unable to concat two videos using FFMPEG. The command fails on the two special videos.

    Video 1 :
    First video is generated from the image using the following command :

    ffmpeg -loop 1 -i 20150608_162807.jpg -c:v libx264 -t 3 -pix_fmt yuv420p out.mp4

    I tried to concat the above video but it did not work so, I thought to add an audio to check if it will work.

    ffmpeg -f lavfi -i aevalsrc=0 -i out.mp4 -shortest -c:v copy -c:a aac -strict experimental silent.mp4

    but even with that it did not work.

    Video 2 :
    Second video is captured from the device camera.

    Both of these videos can be downloaded from here.

    06-09 11:05:56.238  29771-30715/﹕ ffmpeg -i concat:/storage/emulated/0/DCIM/Camera/20150603_142209.mp4|/storage/emulated/0/DCIM/Camera/silent.mp4 -c copy /storage/emulated/0/DCIM/test/MIU-2015-06-09 11-05-56.mp4
    
06-09 11:05:56.268  29771-30739/﹕ WARNING: linker: ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.
    
06-09 11:05:56.278  29771-30739/﹕ ffmpeg version n2.4.2 Copyright (c) 2000-2014 the FFmpeg developers
    
06-09 11:05:56.278  29771-30739/﹕ built on Apr  8 2015 11:29:21 with gcc 4.8 (GCC)
    
06-09 11:05:56.278  29771-30739/﹕ configuration: --target-os=linux --cross-prefix=/ilovevideo/jobs/ffmpeg-android-build-publisher/workspace/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/ilovevideo/jobs/ffmpeg-android-build-publisher/workspace/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/ilovevideo/jobs/ffmpeg-android-build-publisher/workspace/ffmpeg-android/ffmpeg-pkg-config --prefix=/ilovevideo/jobs/ffmpeg-android-build-publisher/workspace/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/ilovevideo/jobs/ffmpeg-android-build-publisher/workspace/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/ilovevideo/jobs/ffmpeg-android-build-publisher/workspace/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
    
06-09 11:05:56.278  29771-30739/﹕ libavutil      54.  7.100 / 54.  7.100
    
06-09 11:05:56.278  29771-30739/﹕ libavcodec     56.  1.100 / 56.  1.100
    
06-09 11:05:56.288  29771-30739/﹕ libavformat    56.  4.101 / 56.  4.101
    
06-09 11:05:56.288  29771-30739/﹕ libavdevice    56.  0.100 / 56.  0.100
    
06-09 11:05:56.288  29771-30739/﹕ libavfilter     5.  1.100 /  5.  1.100
    
06-09 11:05:56.288  29771-30739/﹕ libswscale      3.  0.100 /  3.  0.100
    
06-09 11:05:56.288  29771-30739/﹕ libswresample   1.  1.100 /  1.  1.100
    
06-09 11:05:56.288  29771-30739/﹕ libpostproc    53.  0.100 / 53.  0.100
    
06-09 11:05:56.308  29771-30739/﹕ [mov,mp4,m4a,3gp,3g2,mj2 @ 0xb5e5a400] Found duplicated MOOV Atom. Skipped it
    
06-09 11:05:56.398  29771-30739/﹕ Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'concat:/storage/emulated/0/DCIM/Camera/20150603_142209.mp4|/storage/emulated/0/DCIM/Camera/silent.mp4':
    
06-09 11:05:56.398  29771-30739/﹕ Metadata:
    
06-09 11:05:56.398  29771-30739/﹕ creation_time   : 2015-06-03 12:22:15
    
06-09 11:05:56.398  29771-30739/﹕ major_brand     : isom
    
06-09 11:05:56.398  29771-30739/﹕ minor_version   : 512
    
06-09 11:05:56.398  29771-30739/﹕ compatible_brands: isomiso2avc1mp41
    
06-09 11:05:56.398  29771-30739/﹕ Duration: 00:00:04.80, start: 0.000000, bitrate: 13040 kb/s
    
06-09 11:05:56.398  29771-30739/﹕ Stream #0:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 1280x720, 12008 kb/s, 29.88 fps, 29.92 tbr, 90k tbn, 180k tbc (default)
    
06-09 11:05:56.398  29771-30739/﹕ Metadata:
    
06-09 11:05:56.398  29771-30739/﹕ creation_time   : 2015-06-03 12:22:15
    
06-09 11:05:56.398  29771-30739/﹕ handler_name    : VideoHandle
    
06-09 11:05:56.408  29771-30739/﹕ Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 256 kb/s (default)
    
06-09 11:05:56.408  29771-30739/﹕ Metadata:
    
06-09 11:05:56.408  29771-30739/﹕ creation_time   : 2015-06-03 12:22:15
    
06-09 11:05:56.408  29771-30739/﹕ handler_name    : SoundHandle
    
06-09 11:05:56.408  29771-30739/﹕ Output #0, mp4, to '/storage/emulated/0/DCIM/iLoveVideo/MIU-2015-06-09 11-05-56.mp4':
    
06-09 11:05:56.408  29771-30739/﹕ Metadata:
    
06-09 11:05:56.408  29771-30739/﹕ compatible_brands: isomiso2avc1mp41
    
06-09 11:05:56.408  29771-30739/﹕ major_brand     : isom
    
06-09 11:05:56.408  29771-30739/﹕ minor_version   : 512
    
06-09 11:05:56.408  29771-30739/﹕ encoder         : Lavf56.4.101
    
06-09 11:05:56.418  29771-30739/﹕ Stream #0:0(eng): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1280x720, q=2-31, 12008 kb/s, 29.88 fps, 90k tbn, 90k tbc (default)
    
06-09 11:05:56.418  29771-30739/﹕ Metadata:
    
06-09 11:05:56.418  29771-30739/﹕ creation_time   : 2015-06-03 12:22:15
    
06-09 11:05:56.418  29771-30739/﹕ handler_name    : VideoHandle
    
06-09 11:05:56.418  29771-30739/﹕ Stream #0:1(eng): Audio: aac ([64][0][0][0] / 0x0040), 48000 Hz, stereo, 256 kb/s (default)
    
06-09 11:05:56.418  29771-30739/﹕ Metadata:
    
06-09 11:05:56.418  29771-30739/﹕ creation_time   : 2015-06-03 12:22:15
    
06-09 11:05:56.418  29771-30739/﹕ handler_name    : SoundHandle
    
06-09 11:05:56.418  29771-30739/﹕ Stream mapping:
    
06-09 11:05:56.418  29771-30739/﹕ Stream #0:0 -> #0:0 (copy)
    
06-09 11:05:56.418  29771-30739/﹕ Stream #0:1 -> #0:1 (copy)
    
06-09 11:05:56.418  29771-30739/﹕ Press [q] to stop, [?] for help
    
06-09 11:05:56.548  29771-30739/﹕ frame=  142 fps=0.0 q=-1.0 Lsize=    7121kB time=00:00:04.80 bitrate=12153.1kbits/s
    
06-09 11:05:56.558  29771-30739/﹕ video:6965kB audio:150kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.078725%

    Update 1 :
    The concat protocol doesn’t work with mp4s. So, I tried the other approaches.

    ffmpeg -i input1.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate1.ts
    
ffmpeg -i input2.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate2.ts 
    
ffmpeg -i "concat:intermediate1.ts|intermediate2.ts" -c copy -bsf:a aac_adtstoasc output.mp4

    but still it didn’t work.

    Update 2 :
    I have also used concat demuxer approach but it did not work as well.

  • We are hiring engineers to build an awesome product and platform used by millions of people

    16 février 2016, par Piwik Core Team — Uncategorized

    Are you ready for a new challenge ? Or maybe you know someone who is looking for a change ? We have some exciting problems to solve and are looking for senior developers to work with us and our community on our open source Piwik Analytics platform. Piwik is used by more than one million websites all over the world. It is deployed on more than 300.000 servers and some users track more than 1 billion actions per month.

    What is it like to work on Piwik ?

    We develop this software using modern PHP, MySQL, Redis, AngularJS and more. We provide several kind of APIs and a plugin architecture to allow developers to extend and change Piwik to their needs. However, we would not be Piwik if we stopped at this point ! We want to turn Piwik into an even more awesome product and platform.
    You can imagine there is a lot to do and many challenges to face !

    While one part is to always make Piwik scale better and to improve UI and UX, we also want to provide simple APIs to make the life of developers as pleasant as possible. We aim to solve things the right way and our thousands of unit, integration, system, JavaScript and screenshot tests help us to innovate and to not be afraid of change. We like clean code and constant improvements.

    The Piwik team lives in New Zealand and Europe (Germany). We do the vast majority of our collaboration online. Our values include being open, transparent and sharing knowledge. For this we use tools like GitHub and Slack to communicate and Quake servers to take our minds off complex challenges. We are a small, flexible team, so when you come aboard, you will play an integral part in engineering and have a big impact on the product loved by so many people. You’ll help to create a welcoming environment for new contributors and set an example with your development practices and communications skills.

    Apply now, or spread the word !

    If you have strong skills in PHP send us an email with your CV and tell us a little about yourself and your experience in engineering complex applications.

    Apply for a job here http://piwik.org/jobs/ and if you’re maybe not the right candidate, contribute to the project by sharing this blog post and by sending it to your friends !

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