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  • 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

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

  • 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 (...)

Sur d’autres sites (9737)

  • concatenate mp4 videos with ffmpeg concat demuxer in android

    6 mai 2016, par Ara Badalyan

    I want to concatenate mp4 videos with ffmpeg, the problem is when I want to merge videos taken with Iphone and Android it throws problem

    " Non-monotonous DTS in output stream 0:1 ; previous : 150528, current : 139268 ; changing to 150529. This may result in incorrect timestamps in the output file."

    This is my code

    merge.txt

    file 'iphone.mp4'
    
file 'android.mp4'

    ffmpeg command

    ffmpeg -f concat -i marge.txt -c copy -y merge.mp4

    If I can’t merge this videos how can i make them with same parameters (frame rate, bitrate...) and merge them ?

    P.S I use ffmpeg version 2.4.2 , because I can’t find android ffmpeg library higher then 2.4.2.

  • vp9 : enable multi-thread decoding when refreshctx is equal to 0

    11 octobre 2014, par Di Wu
    vp9 : enable multi-thread decoding when refreshctx is equal to 0

    In vp9_decode_frame function, ff_thread_finish_setup is not called
    
when refreshctx is equal to 0, and the next decoding thread can not
    
start work until the cunrrent frame has been decoded completely. So
    
ff_thread_finish_setup needs to be called to enable Multi-thread
    
decoding in this condition.
    

    Signed-off-by : Di Wu <di1028.wu@samsung.com>
    
Signed-off-by : Reynaldo H. Verdejo Pinochet <reynaldo@osg.samsung.com>
    • [DH] libavcodec/vp9.c

  • Video codec not supported error when adding audio to mp4

    18 février 2019, par WPMed

    I work on an application which you can use to make still photos move. It’s basically a png sequence to mp4 converter.
    Recently we introduced a feature where users can add sound effects to the video.
    Since we released this feature, some users experience problems with the exported video. When they save the file and try to play it, they get a "Video codec not supported" error message. All they get is a black screen, and the audio playing in the background. I use FFmpeg to add audio (in mp3 format) to the mp4 video.
    Here’s an example video, which plays fine on my Mac and on my Samsung Galaxy S6 and S8, but buggy on Samsung SM-A310F (Android 7.0). This is how it looks like on the device.
    I tried to re-encode this video with all the FFmpeg commands I could find, but none of them seemed to work. Can someone spot something that’s not compatible with Android by analyzing the video I linked ?

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