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  • Les formats acceptés

    28 janvier 2010, par

    Les commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
    ffmpeg -codecs ffmpeg -formats
    Les format videos acceptés en entrée
    Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
    Les formats vidéos de sortie possibles
    Dans un premier temps on (...)

  • Contribute to documentation

    13 avril 2011

    Documentation is vital to the development of improved technical capabilities.
    MediaSPIP welcomes documentation by users as well as developers - including : critique of existing features and functions articles contributed by developers, administrators, content producers and editors screenshots to illustrate the above translations of existing documentation into other languages
    To contribute, register to the project users’ mailing (...)

  • Ajouter notes et légendes aux images

    7 février 2011, par

    Pour pouvoir ajouter notes et légendes aux images, la première étape est d’installer le plugin "Légendes".
    Une fois le plugin activé, vous pouvez le configurer dans l’espace de configuration afin de modifier les droits de création / modification et de suppression des notes. Par défaut seuls les administrateurs du site peuvent ajouter des notes aux images.
    Modification lors de l’ajout d’un média
    Lors de l’ajout d’un média de type "image" un nouveau bouton apparait au dessus de la prévisualisation (...)

Sur d’autres sites (6461)

  • ffmpeg - 'No such file or directory' though the file exists

    23 mai 2021, par Md Yeamin

    I am running following command to extract audio from videos and merge them into a single file :

    


    -y -hide_banner -i /storage/emulated/0/Videos/video_4.mp4 -i /storage/emulated/0/WhatsApp/Media/WhatsApp Video/VID-20210430-WA0010.mp4 -i /storage/emulated/0/WhatsApp/Media/WhatsApp Video/VID-20210430-WA0052.mp4 -filter_complex [0:a]atrim=duration=1119.028,volume=1[a_0];[1:a]atrim=duration=84.057,volume=1[a_1];[2:a]atrim=duration=278.029,volume=1[a_2];[a_0][a_1][a_2]concat=n=3:v=0:a=1[audio] -map [audio] -acodec aac -vn /storage/emulated/0/Videos/audio.aac 


    


    But ffmpeg says

    


    /storage/emulated/0/Videos/video_4.mp4: No such file or directory


    


    I can ensure that the file exist on that specified path. What might cause the issue ?

    


    Note : The same error occures for some other comands too, but in all the cases the video file exist in the specified path.

    


  • How to merge video file with audio file and maintain creation time ?

    19 janvier 2021, par madprogramer

    I was finicking around with youtube-dl and ended up downloading a video that youtube-dl wasn't able to merge the generated audio and video. After some investigation, I found that there was an issue in my ffmpeg config.

    


    Normally, if you actually run youtube-dl a second time after fixing ffmpeg, it will automatically merge the files for you. But as fate would have it, the online video has since been deleted so youtube-dl freaks out.

    


    Fortunately ffmpeg itself can also merge audio and video files, but loses a very nice feature youtube-dl's implementation has, keeping the creation time of the files (i.e. creation rather than download or publication time).

    


    Is there any way to merge an audio and video file and keep the creation/last modified date ?

    


  • Re-encoding vlc-created mpeg2 .ts file results in 20 second file

    14 novembre 2016, par insaner

    I was recording something with vlc off v4l2 (in case that makes a difference), and I just selected the first format that worked, being mpeg2 using TS container. File resulted in .ts extension, as automatically selected by vlc. When I then tried to put the video file in my video editor, it said the video was 19,884 hours long, when it should be about 6 minutes (it is 80mb in size). When I try to play it in xine, it correctly shows the duration (vlc doesn’t), and when I use ffprobe :

    [mpegts @ 0x9b2c0a0] max_analyze_duration 5000000 reached at 5000000
    
Input #0, mpegts, from 'loopbacktestcap.ts':   Duration: N/A, start:
    
17978.139456, bitrate: N/A   Program 1 
    
     Stream #0:0[0x44](): Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p, 640x480 [SAR 1:1 DAR 4:3], 104857 kb/s, 30 fps, 30
    
tbr, 90k tbn, 60 tbc
    
     Stream #0:1[0x46](): Video: mpeg2video ([2][0][0][0] / 0x0002), 90k tbn

    Notice especially this line :

       Duration: N/A, start: 17978.139456, bitrate: N/A   Program 1

    I looked it up and it seems the lack of duration has to do with the container. But I have tried a few things to reencode (I tried -vcodec copy, mpeg2, libx264...) and all I can get is 20 second files of 1.1mb - 1.8mb.

    So how can I reencode this file so the duration appears, and I get the full 6 minutes, instead of just the first 20 seconds ?

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