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  • Librairies et binaires spécifiques au traitement vidéo et sonore

    31 janvier 2010, par

    Les logiciels et librairies suivantes sont utilisées par SPIPmotion d’une manière ou d’une autre.
    Binaires obligatoires FFMpeg : encodeur principal, permet de transcoder presque tous les types de fichiers vidéo et sonores dans les formats lisibles sur Internet. CF ce tutoriel pour son installation ; Oggz-tools : outils d’inspection de fichiers ogg ; Mediainfo : récupération d’informations depuis la plupart des formats vidéos et sonores ;
    Binaires complémentaires et facultatifs flvtool2 : (...)

  • 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 (...)

  • De l’upload à la vidéo finale [version standalone]

    31 janvier 2010, par

    Le chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
    Upload et récupération d’informations de la vidéo source
    Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
    Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)

Sur d’autres sites (6449)

  • Merging two audio files in Android using FFMPEG

    1er juillet 2021, par Jeremy

    I'm working on an application that takes two audio files, and merges them into the respected channels. The way they are being equalized are not as good as I had hoped, So I want to adjust the volume of each file during the mixing phase. I've seen a couple of examples online, like this, this, and [this][3].. but none of them are working for me. Can someone direct me in the right direction with this ? Much appreciation !

    



    I am using this library to execute : https://github.com/WritingMinds/ffmpeg-android-java

    



    Here is my code (EDIT)

    



    String files = "-i " + mVoiceFile.getAbsolutePath() + " -i " + mBeatFile.getAbsolutePath();
String filter = "-filter_complex [0:a]volume=0.99[a1];[1:a]volume=0.3[a2][a1][a2]amerge=inputs=2,volume=1.3,pan=stereo|c0

    



    enter code here

    



    and here are my errors from running.

    



    04-06 12:17:34.079 30975-30975/me.rapchat.rapchat E/Studio Process: WARNING: linker: /data/user/0/me.rapchat.rapchat/files/ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.
04-06 12:17:34.306 30975-30975/me.rapchat.rapchat E/Studio Process: ffmpeg version n2.4.2 Copyright (c) 2000-2014 the FFmpeg developers
04-06 12:17:34.306 30975-30975/me.rapchat.rapchat E/Studio Process:   built on Oct  7 2014 15:08:46 with gcc 4.8 (GCC)
04-06 12:17:34.306 30975-30975/me.rapchat.rapchat E/Studio Process:   configuration: --target-os=linux --cross-prefix=/home/sb/Source-Code/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/sb/Source-Code/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=/home/sb/Source-Code/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/sb/Source-Code/ffmpeg-android/build/armeabi-v7a-neon --extra-cflags='-I/home/sb/Source-Code/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all -mfpu=neon' --extra-ldflags='-L/home/sb/Source-Code/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
04-06 12:17:34.307 30975-30975/me.rapchat.rapchat E/Studio Process:   libavutil      54.  7.100 / 54.  7.100
04-06 12:17:34.307 30975-30975/me.rapchat.rapchat E/Studio Process:   libavcodec     56.  1.100 / 56.  1.100
04-06 12:17:34.307 30975-30975/me.rapchat.rapchat E/Studio Process:   libavformat    56.  4.101 / 56.  4.101
04-06 12:17:34.307 30975-30975/me.rapchat.rapchat E/Studio Process:   libavdevice    56.  0.100 / 56.  0.100
04-06 12:17:34.308 30975-30975/me.rapchat.rapchat E/Studio Process:   libavfilter     5.  1.100 /  5.  1.100
04-06 12:17:34.308 30975-30975/me.rapchat.rapchat E/Studio Process:   libswscale      3.  0.100 /  3.  0.100
04-06 12:17:34.308 30975-30975/me.rapchat.rapchat E/Studio Process:   libswresample   1.  1.100 /  1.  1.100
04-06 12:17:34.308 30975-30975/me.rapchat.rapchat E/Studio Process:   libpostproc    53.  0.100 / 53.  0.100
04-06 12:17:34.372 30975-30975/me.rapchat.rapchat E/Studio Process: Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/data/user/0/me.rapchat.rapchat/cache/recording.m4a':
04-06 12:17:34.373 30975-30975/me.rapchat.rapchat E/Studio Process:   Metadata:
04-06 12:17:34.373 30975-30975/me.rapchat.rapchat E/Studio Process:     major_brand     : mp42
04-06 12:17:34.373 30975-30975/me.rapchat.rapchat E/Studio Process:     minor_version   : 0
04-06 12:17:34.374 30975-30975/me.rapchat.rapchat E/Studio Process:     compatible_brands: isommp42
04-06 12:17:34.374 30975-30975/me.rapchat.rapchat E/Studio Process:     creation_time   : 2016-04-06 19:17:33
04-06 12:17:34.374 30975-30975/me.rapchat.rapchat E/Studio Process:   Duration: 00:00:01.56, start: 0.000000, bitrate: 144 kb/s
04-06 12:17:34.375 30975-30975/me.rapchat.rapchat E/Studio Process:     Stream #0:0(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 128 kb/s (default)
04-06 12:17:34.375 30975-30975/me.rapchat.rapchat E/Studio Process:     Metadata:
04-06 12:17:34.375 30975-30975/me.rapchat.rapchat E/Studio Process:       creation_time   : 2016-04-06 19:17:33
04-06 12:17:34.375 30975-30975/me.rapchat.rapchat E/Studio Process:       handler_name    : SoundHandle
04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio Process: Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '/data/user/0/me.rapchat.rapchat/cache/beats/d3c37d60-ed50-4c00-b454-4e399a7858ff.m4a':
04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio Process:   Metadata:
04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio Process:     major_brand     : mp42
04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio Process:     minor_version   : 0
04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio Process:     compatible_brands: mp42isom
04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio Process:     creation_time   : 1993-11-24 14:46:42
04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio Process:     encoder         : Max 0.9.1
04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio Process:     iTunSMPB        : 00000000 00000840 000003c0 000000000035dc00 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio Process:     date            : 2015
04-06 12:17:34.401 30975-30975/me.rapchat.rapchat E/Studio Process:   Duration: 00:01:20.04, start: 0.047891, bitrate: 129 kb/s
04-06 12:17:34.402 30975-30975/me.rapchat.rapchat E/Studio Process:     Stream #1:0(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)
04-06 12:17:34.402 30975-30975/me.rapchat.rapchat E/Studio Process:     Metadata:
04-06 12:17:34.402 30975-30975/me.rapchat.rapchat E/Studio Process:       creation_time   : 1993-11-24 14:46:42
04-06 12:17:34.404 30975-30975/me.rapchat.rapchat E/Studio Process: [NULL @ 0xb5e4fc00] Unable to find a suitable output format for '[a1][a2]amerge,pan=stereo|c0me.rapchat.rapchat E/Studio Process: [a1][a2]amerge,pan=stereo|c0me.rapchat.rapchat E/Studio Status Failed: WARNING: linker: /data/user/0/me.rapchat.rapchat/files/ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.
                                                                          ffmpeg version n2.4.2 Copyright (c) 2000-2014 the FFmpeg developers
                                                                            built on Oct  7 2014 15:08:46 with gcc 4.8 (GCC)
                                                                            configuration: --target-os=linux --cross-prefix=/home/sb/Source-Code/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/sb/Source-Code/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=/home/sb/Source-Code/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/sb/Source-Code/ffmpeg-android/build/armeabi-v7a-neon --extra-cflags='-I/home/sb/Source-Code/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all -mfpu=neon' --extra-ldflags='-L/home/sb/Source-Code/ffmpeg-android/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
                                                                          Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/data/user/0/me.rapchat.rapchat/cache/recording.m4a':
                                                                            Metadata:
                                                                              major_brand     : mp42
                                                                              minor_version   : 0
                                                                              compatible_brands: isommp42
                                                                              creation_time   : 2016-04-06 19:17:33
                                                                            Duration: 00:00:01.56, start: 0.000000, bitrate: 144 kb/s
                                                                              Stream #0:0(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 128 kb/s (default)
                                                                              Metadata:
                                                                                creation_time   : 2016-04-06 19:17:33
                                                                                handler_name    : SoundHandle
                                                                          Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '/data/user/0/me.rapchat.rapchat/cache/beats/d3c37d60-ed50-4c00-b454-4e399a7858ff.m4a':
                                                                            Metadata:
                                                                              major_brand     : mp42
                                                                              minor_version   : 0
                                                                              compatible_brands: mp42isom
                                                                              creation_time   : 1993-11-24 14:46:42
                                                                              encoder         : Max 0.9.1
                                                                              iTunSMPB        : 00000000 00000840 000003c0 000000000035dc00 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
                                                                              date            : 2015
                                                                            Duration: 00:01:20.04, start: 0.047891, bitrate: 129 kb/s
                                                                              Stream #1:0(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)
                                                                              Metadata:
                                                                                creation_time   : 1993-11-24 14:46:42
                                                                          [NULL @ 0xb5e4fc00] Unable to find a suitable output format for '[a1][a2]amerge,pan=stereo|c0code>

    


  • OpenCV no longer working after Homebrew install

    28 mars 2014, par Tom smith

    I have have been running OpenCV from QT creator on Mac OSX.
    I was having trouble getting VideoWriter to work so it was suggested I try installing ffmpeg with opencv.
    Using brew I executed this command

    brew install homebrew/science/opencv --with-ffmpeg

    However, during this process I received the following error

    Warning: Could not link opencv. Unlinking...
    
Error: The `brew link` step did not complete successfully
    
The formula built, but is not symlinked into /usr/local
    
You can try again using `brew link opencv'

    The "possible conflicting files were mostly from "/usr/local/include/opencv2/"

    I tried the command brew suggested but this gave me a permission denied warning so I found a fix to execute before the command, both of which are below.

    sudo chown -R `whoami` /usr/local
    
brew link --overwrite opencv

    This appeared to execute correctly giving me the following response

    Linking /usr/local/Cellar/opencv/2.4.8.2... 251 symlinks created

    The problem is this now seems to have broken my working project. When I try to run the project now I get the following errors
    Unfortunately after trying to rebuild the project I cannot get the error below to show up in the terminal again but it said the following error, was expected in /usr/local/include but not found in the build directory (afraid I cannot be sure of the exact wording)

    dyld: lazy symbol binding failed:

    In QT creator however, when trying to build the project it says

    error: symbol(s) not found for architecture x86_64
    
error: linker command failed with exit code 1 (use -v to see invocation)

    Any suggestions for a fix, and also how I can get VideoWriter to work with opencv on Mac OSX after I have my project working again ?

  • Screen Transfer [on hold]

    9 décembre 2013, par sanalism

    I need to develop a program that transfers a users screen and sound to another user over internet. The scenario can be visualized like this :

    There is a teacher in front of his computer and writes some code on his computer (ex:visual studio). He has a microphone. There is two students watching teacher's screen and listening his voice from their own computers.

    There are a few alternatives to get screen capture of a user and transfer it like ffmpeg, aforge or self coded screen capture program by c# (over udp). Tried all alternatives.

    However, the problem is all of them are so slow, or creates bad resolution of video. There should be an alternative way, because some programs reaches a high quality. For example teamviewer, windows remote desktop, logmein can send the screen with a high quality. More over, teamviewer can send sound also.

    Where should I begin to overcome this mission ? Which platform, language, protocol is useful ?

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