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  • Other interesting software

    13 April 2011, by

    We don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
    The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
    We don’t know them, we didn’t try them, but you can take a peek.
    Videopress
    Website: http://videopress.com/
    License: GNU/GPL v2
    Source code: (...)

  • Emballe Médias : Mettre en ligne simplement des documents

    29 October 2010, by

    Le plugin emballe médias a été développé principalement pour la distribution mediaSPIP mais est également utilisé dans d’autres projets proches comme géodiversité par exemple. Plugins nécessaires et compatibles
    Pour fonctionner ce plugin nécessite que d’autres plugins soient installés : CFG Saisies SPIP Bonux Diogène swfupload jqueryui
    D’autres plugins peuvent être utilisés en complément afin d’améliorer ses capacités : Ancres douces Légendes photo_infos spipmotion (...)

  • Librairies et logiciels spécifiques aux médias

    10 December 2010, by

    Pour un fonctionnement correct et optimal, plusieurs choses sont à prendre en considération.
    Il est important, après avoir installé apache2, mysql et php5, d’installer d’autres logiciels nécessaires dont les installations sont décrites dans les liens afférants. Un ensemble de librairies multimedias (x264, libtheora, libvpx) utilisées pour l’encodage et le décodage des vidéos et sons afin de supporter le plus grand nombre de fichiers possibles. Cf. : ce tutoriel; FFMpeg avec le maximum de décodeurs et (...)

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  • FFMpeg - add background music

    22 August 2018, by jacky brown

    here is what i have:
    input1.avi - video that contain sounds.
    input2.avi - video that doesn’t contain sounds.
    music.mp3 - audio file.

    i want to add background music(music.mp3 file) to the video.

    C:\input1.avi -i C:\music.mp3 -shortest -c:v copy -c:a copy C:\output1.avi

    then output1.avi is the same as input1 - movie with sounds but without the background music (music.mp3)

    when i try to use the other file (video without sounds):

    C:\input2.avi -i C:\music.mp3 -shortest -c:v copy -c:a copy C:\output2.avi

    then output2.avi is the same as input2 + it have the background music.

    so why input1 does not contain the background music???
    and how can i decrease or increase the volume of music.mp3 file?

    thanks.

    console output:

    C:\motionbee\ffmpeg\bin>ffmpeg -i C:\input.avi
    
-i C:\music.mp3 -shortest -c:v copy -filter_
    
complex "[0:a]aformat=fltp:44100:stereo[0a];[1]aformat=fltp:44100:stereo,volume=
    
1.5[1a];[0a][1a]amix[a]" -map 0:v -map "[a]" -ac 2 C:\output1.avi
    
ffmpeg version N-78949-g6f5048f Copyright (c) 2000-2016 the FFmpeg developers
    
  built with gcc 5.3.0 (GCC)
    
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
    
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
    
le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
    
enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-l
    
ibilbc --enable-libmodplug --enable-libmfx --enable-libmp3lame --enable-libopenc
    
ore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --ena
    
ble-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable
    
-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --ena
    
ble-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx
    
264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable
    
-lzma --enable-decklink --enable-zlib
    
  libavutil      55. 19.100 / 55. 19.100
    
  libavcodec     57. 27.101 / 57. 27.101
    
  libavformat    57. 28.100 / 57. 28.100
    
  libavdevice    57.  0.101 / 57.  0.101
    
  libavfilter     6. 39.100 /  6. 39.100
    
  libswscale      4.  0.100 /  4.  0.100
    
  libswresample   2.  0.101 /  2.  0.101
    
  libpostproc    54.  0.100 / 54.  0.100
    
Input #0, avi, from 'C:\input.avi':
    
  Metadata:
    
    encoder         : Lavf57.28.100
    
  Duration: 00:02:05.76, start: 0.000000, bitrate: 450 kb/s
    
    Stream #0:0: Video: mpeg4 (Simple Profile) (XVID / 0x44495658), yuv420p, 720
    
x480 [SAR 1:1 DAR 3:2], 440 kb/s, 25 fps, 25 tbr, 25 tbn, 25 tbc
    
    Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 44100 Hz, stereo, s16p, 128 k
    
b/s
    
[mp3 @ 00000000005c8020] Skipping 0 bytes of junk at 32370.
    
Input #1, mp3, from 'C:\music.mp3':
    
  Metadata:
    
    title           : Broadcast News Package - News Intro
    
    artist          : After Effects News Template
    
  Duration: 00:01:57.89, start: 0.025057, bitrate: 194 kb/s
    
    Stream #1:0: Audio: mp3, 44100 Hz, stereo, s16p, 192 kb/s
    
    Metadata:
    
      encoder         : Lavc56.26
    
File 'C:\output1.avi' already exists. Overwrite
    
? [y/N] y
    
Output #0, avi, to 'C:\output1.avi':
    
  Metadata:
    
    ISFT            : Lavf57.28.100
    
    Stream #0:0: Video: mpeg4 (XVID / 0x44495658), yuv420p, 720x480 [SAR 1:1 DAR
    
 3:2], q=2-31, 440 kb/s, 25 fps, 25 tbr, 25 tbn, 25 tbc
    
    Stream #0:1: Audio: mp3 (libmp3lame) (U[0][0][0] / 0x0055), 44100 Hz, stereo
    
, fltp (default)
    
    Metadata:
    
      encoder         : Lavc57.27.101 libmp3lame
    
Stream mapping:
    
  Stream #0:1 (mp3) -> aformat
    
  Stream #1:0 (mp3) -> aformat
    
  Stream #0:0 -> #0:0 (copy)
    
  amix -> Stream #0:1 (libmp3lame)
    
Press [q] to stop, [?] for help
    
frame= 3118 fps=0.0 q=-1.0 Lsize=    6917kB time=00:02:05.76 bitrate= 450.6kbits
    
/s speed= 867x
    
video:6754kB audio:74kB subtitle:0kB other streams:0kB global headers:0kB muxing
    
 overhead: 1.307944%

  • ffmpeg decoding m4a to strange values, +/- 2.93864e38, zeros, nan, etc

    3 March 2017, by Eric Zhang

    i’m using pre-compiled binaries for ffmpeg, and it’s decoding m4a AAC to strange values, thus it sounds a bit noisy, would expect values between -1 and 1

    upper lower limits: 2.93864e38
    NAN
    zeros

  • How to convert stereo sound to mono with FFmpeg?

    16 September 2016, by Meugiwara

    I use the FFmpeg library for a personnal project and I need help about one thing. I have a music file in stereo sound and I want to convert this stereo sound to mono sound ? Is it possible with this library ? Is there a function inside to do this job ? My project is in C/C++.

    I searched on the Doxygen documentation on the FFmpeg website and on this forum but I didn’t find something interesting.

    Thanks for reading !

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