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  • La sauvegarde automatique de canaux SPIP

    1er avril 2010, par

    Dans le cadre de la mise en place d’une plateforme ouverte, il est important pour les hébergeurs de pouvoir disposer de sauvegardes assez régulières pour parer à tout problème éventuel.
    Pour réaliser cette tâche on se base sur deux plugins SPIP : Saveauto qui permet une sauvegarde régulière de la base de donnée sous la forme d’un dump mysql (utilisable dans phpmyadmin) mes_fichiers_2 qui permet de réaliser une archive au format zip des données importantes du site (les documents, les éléments (...)

  • 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 (...)

  • 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 (...)

Sur d’autres sites (8163)

  • FFMPEG live transcoder aac_latm audio crash

    15 mars 2013, par user1716057

    i am trying to use ffmpeg as a live transcoder to transcode tv channels from udp input to rtmp output to a wowza server.

    i have 2 kinds of input channels in 1st kind the input audio is mp2 and in the second kind the input audio is acc_latm.

    my problem is when i transcode the mp2 channels everything is fine but when i try to transcode the aac channel the audio is muted after few hours. but the video is fine.

    the output codecs are : libx264 for video and faac or fdk-aac for audio output
    i tried both aac encoders but it did not change.

    i think it is the ffmpeg aac decoder's problem. but i cannot fix this.

    i need a way to detect the problem online and restart the ffmpeg. or change the ffmpeg decoder codec.

    please help.
    thanks.

  • ffmpeg convert one png to DNxHD

    15 mars 2019, par bcvery1

    I’m trying to create a DNxHD file from one PNG file. The output should be "24000/1001" fps, 1920x1080, using the dnxhd codec. Every frame should be the same. The outputted stream must be 20 seconds in length.

    I have a solution which uses filter_complex to loop the PNG for each frame, however this results in extremely large files. Given that I will be combining possibly multiple hundred DNxHD files into one AAF file, the output file size is too large.

    Is there any improvement I can make on the command below which would achieve this file size reduction ?

    ffmpeg -i INFILE.png -y -nostdin -an -vcodec dnxhd -pix_fmt yuv422p -vb 36M  -framerate 24000/1001 -filter_complex loop=479:1:0 OUFILE.dnxhd

    I do not know ffmpeg all that well, this command has been constructed by copying parts of commands I have found online.

  • FFMPEG merge one audio and one video file [duplicate]

    29 mars 2020, par Karl R

    I am trying to get this to work for a few hours and am having no luck. I have two .mp4 files - one is audio and one is video. All I want to do is merge them into one file so the audio and video play together. I know I am close but I keep getting stuck on "Cannot find a matching stream for unlabeled input pad 1 on filter Parsed_hstack_0".

    My command I am using is :

    .\ffmpeg.exe -y -i .\camera.mp4 -i .\screen.mp4 -filter_complex hstack output.mp4

    Output of each file type is attached.

    Thank you for your help - we found a bug in a screen recording app on our AMD laptops and this will helps us with a temporary fix. I work at a tech college and we are scrambling to get online videos going for the students to learn remotely.
    pic1
    pic2

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