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  • Participer à sa traduction

    10 avril 2011

    Vous pouvez nous aider à améliorer les locutions utilisées dans le logiciel ou à traduire celui-ci dans n’importe qu’elle nouvelle langue permettant sa diffusion à de nouvelles communautés linguistiques.
    Pour ce faire, on utilise l’interface de traduction de SPIP où l’ensemble des modules de langue de MediaSPIP sont à disposition. ll vous suffit de vous inscrire sur la liste de discussion des traducteurs pour demander plus d’informations.
    Actuellement MediaSPIP n’est disponible qu’en français et (...)

  • Menus personnalisés

    14 novembre 2010, par

    MediaSPIP utilise le plugin Menus pour gérer plusieurs menus configurables pour la navigation.
    Cela permet de laisser aux administrateurs de canaux la possibilité de configurer finement ces menus.
    Menus créés à l’initialisation du site
    Par défaut trois menus sont créés automatiquement à l’initialisation du site : Le menu principal ; Identifiant : barrenav ; Ce menu s’insère en général en haut de la page après le bloc d’entête, son identifiant le rend compatible avec les squelettes basés sur Zpip ; (...)

  • 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 (8422)

  • FFMPEG Image to video zoompan starting position

    4 août 2018, par lchn

    In creating mp4 slideshows out of images, I’ve taken some examples online for zoompan, but I still haven’t quite grasped how to make them start from a certain location in an image. Here’s the typical command :

    ffmpeg -i image-000.jpg -filter_complex "color=c=black:r=60:s=1920x1080[demo] ;[0:v]format=pix_fmts=yuva420p,scale=8000 :-1,zoompan=z=’min(zoom+0.0005,1.2)’:s=2000x1333:d=360:x=’if(gte(zoom,0.9),x,x+1/a)’:y=’if(gte(zoom,0.9),y,y+1)’,fade=in:0:25:alpha=1,setpts=PTS-STARTPTS+0.0/TB[v0] ;[demo][v0]overlay=format=yuv420"
    - t 6 -c:v libx264 -y out000.mp4

    Photos I use are typically 3x2 or 4x3 in aspect ratio, so I get that they’d have to be cut off somewhere in a 16x9 video. The thing with the above code (and many other "Ken Burns effect" samples) is that they start with the bottom portion of the images cut off, then either zoom in more or zoom out, never showing the bottom.

    How do I get the animation to start further down on the image ? Nothing I do in the y=’...’ section affects it. Not even putting in constant numbers between 0 and 100000 instead of adjusting values in that formula y=’if(gte(zoom,0.9),y,y+1)’.

    Note : I’ve had some success using crop or pad for the original image, but I’d rather understand how to better position zoompan inside of the image.

  • How to convert mp4 to h264 adding AUDs using FFMPEG

    16 mars 2021, par syntheticgio

    I am trying to convert an mp4 clip to h264 bytestream format using FFMPEG. I have successfully compiled FFMPEG from source with access to libx264.

    



    Looking at the documentation for FFMPEG (version 3.2.2) under libx264 there is a bool flag -aud. In the online documentation it gives the example

    



    ffmpeg -i input.flac -id3v2_version 3 out.mp3


    



    Using this format, the following command works, but doesn't produce the desired AUDs in the output file :

    



    ffmpeg -i input.mp4 -codec:v libx264 -aud 1 output.h264


    



    I've also tried different variants with this including :

    



    ffmpeg -i input.mp4 -vcodec libx264 -aud 1 output.h264
ffmpeg -i input.mp4 -aud 1 output.h264


    



    etc.

    



    I assume there is something I'm misunderstanding about performing this operation. I basically want to take a h264 movie in an mp4 container and dump it as an h264 stream with AUDs added to it. Any idea why this isn't working ?

    



    (I've also tried using x264 with the -aud flag, also ran fine but didn't produce the desired output).

    


  • How to convert mp4 to h264 adding AUDs using FFMPEG

    30 décembre 2016, par SyntheticGio

    I am trying to convert an mp4 clip to h264 bytestream format using FFMPEG. I have successfully compiled FFMPEG from source with access to libx264.

    Looking at the documentation for FFMPEG (version 3.2.2) under libx264 there is a bool flag -aud. In the online documentation it gives the example

    ffmpeg -i input.flac -id3v2_version 3 out.mp3

    Using this format, the following command works, but doesn’t produce the desired AUDs in the output file :

    ffmpeg -i input.mp4 -codec:v libx264 -aud 1 output.h264

    I’ve also tried different variants with this including :

    ffmpeg -i input.mp4 -vcodec libx264 -aud 1 output.h264
    
ffmpeg -i input.mp4 -aud 1 output.h264

    etc.

    I assume there is something I’m misunderstanding about performing this operation. I basically want to take a h264 movie in an mp4 container and dump it as an h264 stream with AUDs added to it. Any idea why this isn’t working ?

    (I’ve also tried using x264 with the -aud flag, also ran fine but didn’t produce the desired output).

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