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  • Utilisation et configuration du script

    19 janvier 2011, par

    Informations spécifiques à la distribution Debian
    Si vous utilisez cette distribution, vous devrez activer les dépôts "debian-multimedia" comme expliqué ici :
    Depuis la version 0.3.1 du script, le dépôt peut être automatiquement activé à la suite d’une question.
    Récupération du script
    Le script d’installation peut être récupéré de deux manières différentes.
    Via svn en utilisant la commande pour récupérer le code source à jour :
    svn co (...)

  • Publier sur MédiaSpip

    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
    Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir

  • 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) (...)

Sur d’autres sites (4738)

  • how to combine an image stream and an audio stream together with transcoding

    11 novembre 2020, par SolskGaer

    I tried the method mentioned in this link to capture audio stream from an iPhone, and want to combine the audio stream with an image stream(10 fps) which can be acquired via http. But the output I got has messed up audio and the video speed is way faster than the input, here is the command I used to generate the video ffmpeg -f avfoundation -i ":4" -f mjpeg -i http://127.0.0.1:8888 -c:a aac -c:v libx264 out.mp4, how do I fix the problem ? By the way, when I transcoding audio/video only, it worked exactually as expected.

    


  • FFmpeg works out mp3 duration with file input, but fails with pipe ?

    16 août 2012, par user1599160

    I am trying to get PCM data from mp3's using ffmpeg, but the files are stored on a database, gridfs, so I am trying to use pipes to give ffmpeg the data with some sucess, however there is one file which ffmpeg handles correctlt if fed the filename as an input, and incorrectly when given the file as a pipe :( any idea why ?

    ffmpeg -i - -f s16le -acodec pcm_s16le output.raw < testMp3s/test-corrupt.mp3

    gives

    ffmpeg version 0.11.1 Copyright (c) 2000-2012 the FFmpeg developers
    
built on Jun  9 2012 13:50:13 with gcc 4.7.0 20120505 (prerelease)
    
configuration: --prefix=/usr --enable-libmp3lame --enable-libvorbis --enable-libxvid --        enable-libx264 --enable-libvpx --enable-libtheora --enable-libgsm --enable-libspeex -- enable-postproc --enable-shared --enable-x11grab --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libschroedinger --enable-libopenjpeg --enable-librtmp --enable-libpulse --enable-libv4l2 --enable-gpl --enable-version3 --enable-runtime-cpudetect --  disable-debug --disable-static
    
libavutil      51. 54.100 / 51. 54.100
    
libavcodec     54. 23.100 / 54. 23.100
    
libavformat    54.  6.100 / 54.  6.100
    
libavdevice    54.  0.100 / 54.  0.100
    
libavfilter     2. 77.100 /  2. 77.100
    
libswscale      2.  1.100 /  2.  1.100
    
libswresample   0. 15.100 /  0. 15.100
    
libpostproc    52.  0.100 / 52.  0.100
    
[mp3 @ 0x16d7100] Unknown attached picture mimetype: JPG, skipping.
    
[mp3 @ 0x16d7100] max_analyze_duration 5000000 reached at 5015510
    
[mp3 @ 0x16d7100] Estimating duration from bitrate, this may be inaccurate
    
Input #0, mp3, from 'pipe:':
    
Metadata:
    
album           : FreshNewMusik.Com
    
encoded_by      : iTunes 10.6.3
    
title           : No Lie (Freestyle)
    
artist          : Lil Wayne
    
album_artist    : Lil Wayne
    
genre           : Hip-Hop/Rap
    
TT3             : twitter.com/jakejarvis
    
date            : 2012
    
Duration: N/A, start: 0.000000, bitrate: 320 kb/s
    
Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16, 320 kb/s

    Yet

    ffmpeg -i testMp3s/test-corrupt.mp3 -f s16le -acodec pcm_s16le output.raw

    gives

    ffmpeg version 0.11.1 Copyright (c) 2000-2012 the FFmpeg developers
    
built on Jun  9 2012 13:50:13 with gcc 4.7.0 20120505 (prerelease)
    
configuration: --prefix=/usr --enable-libmp3lame --enable-libvorbis --enable-libxvid --    enable-libx264 --enable-libvpx --enable-libtheora --enable-libgsm --enable-libspeex --enable-postproc --enable-shared --enable-x11grab --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libschroedinger --enable-libopenjpeg --enable-librtmp --enable-libpulse --enable-libv4l2 --enable-gpl --enable-version3 --enable-runtime-cpudetect --disable-debug --disable-static
    
libavutil      51. 54.100 / 51. 54.100
    
libavcodec     54. 23.100 / 54. 23.100
    
libavformat    54.  6.100 / 54.  6.100
    
libavdevice    54.  0.100 / 54.  0.100
    
libavfilter     2. 77.100 /  2. 77.100
    
libswscale      2.  1.100 /  2.  1.100
    
libswresample   0. 15.100 /  0. 15.100
    
libpostproc    52.  0.100 / 52.  0.100
    
[mp3 @ 0xf33100] Unknown attached picture mimetype: JPG, skipping.
    
[mp3 @ 0xf33100] max_analyze_duration 5000000 reached at 5015510
    
[mp3 @ 0xf33100] Estimating duration from bitrate, this may be inaccurate
    
Input #0, mp3, from 'testMp3s/test-corrupt.mp3':
    
Metadata:
    
album           : FreshNewMusik.Com
    
encoded_by      : iTunes 10.6.3
    
title           : No Lie (Freestyle)
    
artist          : Lil Wayne
    
album_artist    : Lil Wayne
    
genre           : Hip-Hop/Rap
    
TT3             : twitter.com/jakejarvis
    
date            : 2012
    
Duration: 00:02:33.86, start: 0.000000, bitrate: 320 kb/s
    
Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16, 320 kb/s

    How do I get the duration with the pipe ? (the data is available on memory in a python app)

  • Extract image from video in Python using ffmpeg and subprocess

    13 juin 2021, par Mevon

    Me and a friend are currently working on a twitter bot which uploads images taken from randomly chosen video files.
    
We are using ffmpeg, with subprocess.call(), to get out.jpg from a video file,
    
which is working fine when the subtitles are hardcoded into the video.
    
We've also made it burn the subtitles into the out.jpg outside of python, but when trying it inside pyhton with subprocess.call() it won't work and it will say :

    


    Output /file/path/to/file.mkv same as Input #0 - exiting
FFmpeg cannot edit existing files in-place.


    


    This is the code for harcoded subtitles.

    


    subprocess.call(
        ['ffmpeg', '-y', '-ss', str(randomTime), '-i', filepath, '-vframes', '1', '-vf', 'scale=1920:1080', '-q:v', '1',
         '-qmin', '1', tmpfilename])


    


    And this the code for non hardcoded subtitles.

    


    subprocess.call(
        ['ffmpeg', '-y', '-ss', str(randomTime), '-copyts', '-i', filepath, '-vf', 'subtitles', filepath, '-vframes', '1', '-vf', 'scale=1920:1080',
         '-vf', '-q:v', '1', '-qmin', '1', '-frames:v', '1', tmpfilename])


    


    Also both me and my friend are not so sure if calling ffmpeg using subprocess.call() is the right way to do it in python.
    
Any kind of help is welcome and please ask me for more code or more details if needed.

    


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