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Autres articles (35)

  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

  • Les images

    15 mai 2013

  • Taille des images et des logos définissables

    9 février 2011, par

    Dans beaucoup d’endroits du site, logos et images sont redimensionnées pour correspondre aux emplacements définis par les thèmes. L’ensemble des ces tailles pouvant changer d’un thème à un autre peuvent être définies directement dans le thème et éviter ainsi à l’utilisateur de devoir les configurer manuellement après avoir changé l’apparence de son site.
    Ces tailles d’images sont également disponibles dans la configuration spécifique de MediaSPIP Core. La taille maximale du logo du site en pixels, on permet (...)

Sur d’autres sites (2324)

  • Record and preview webcamera stream at the same time

    11 juin 2019, par Vlad Popov

    I’m using ffmpeg and Windows 7/10 OS and going to save webcamera stream to file and preview it at the same time (from time to time, not constantly).
    I can solve each of these tasks separately :

    1. Saving webcamera stream to 1-minute files :

    $ffmpeg_exe = "C:\ffmpeg.exe"

    $video_source = "USB Video Device"

    Start-Process $ffmpeg_exe -ArgumentList @("-y -hide_banner -f dshow -rtbufsize 100M -i video=``"$video_source``" -preset ultrafast -strftime 1 -f segment -segment_time 00:01:00 ``"$out_folder\%Y_%m_%d_%H_%M_%S.mp4``"") -Wait -NoNewWindow

    1. Preview webcamera using ffplay :

    $ffplay_exe = "C:\ffplay.exe"

    Start-Process $ffplay_exe -ArgumentList @("-hide_banner -f dshow -i video=``"$video_source``" -preset ultrafast") -Wait -NoNewWindow

    Is there a way to do it using single command ? I think I have to use ffmpeg within named pipes but I don’t understand how to create/operate them. Maybe someone have already working Windows command which will 1) save webcamera video to file 2) also send it to named pipe for another applications like ffplay or VLC ?

    Thanks for your answers,

    —Vlad

  • FFMPEG merge multiple audio into video in specific time [closed]

    19 avril 2024, par Umar

    Right now i have :

    


      

    • 1 - video (.mp4)

      • 


    • N - audio with its timestamp start and end (.wav)

      • 


    


    I want to merge those audio to the video based on that time with still preserving the original video audio

    


    So that the final illustration will looks like this :

    


    audio       ----aud1------aud2------aud3--------aud4---------audn------->
video+audio ------------------------------------------------------------>


    


    the audio position will be based on the time, i already have this data

    


    start=00:00:12.040,end=00:00:16.640 aud1
start=00:00:16.640,end=00:00:21.520 aud2
...


    


    How to achieve this using ffmpeg

    


    thankyou

    


  • avformat/utils : function to get the formatted ntp time

    7 mai 2018, par Vishwanath Dixit
    avformat/utils : function to get the formatted ntp time

    This utility function creates 64-bit NTP time format as per the RFC
    
5905.
    
A simple explaination of 64-bit NTP time format is here
    
http://www.beaglesoft.com/Manual/page53.htm
    • [DH] libavformat/internal.h
    • [DH] libavformat/utils.c

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