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Autres articles (20)

  • 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 (...)

  • 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 (...)

  • Contribute to a better visual interface

    13 avril 2011

    MediaSPIP is based on a system of themes and templates. Templates define the placement of information on the page, and can be adapted to a wide range of uses. Themes define the overall graphic appearance of the site.
    Anyone can submit a new graphic theme or template and make it available to the MediaSPIP community.

Sur d’autres sites (5678)

  • FFMPEG - Adding a full-frame image to the beginning of a video

    17 janvier 2020, par lyinawake

    I have tried many different ways to try to create a 10 second video file out of an image file and have used all the same switches and codecs as I used to encode my video file. However, when I concat the two using anything but complex_filter (which forces the video through another round of transcoding), the resulting video file is corrupt. I believe this is due to the inherent differences of the 10 second clip that ffmpeg created from the image, but there must be some way to get it to encode the exact same way as my video file.

    Here is the command I am using to turn the image into a 10s video clip (I added a silent mp3 because I thought that an audio stream starting partway through the video was messing things up) :

    ffmpeg -loop 1 -i splash.jpg -i silence.mp3 -c:v libx264 -preset slow -g 60 -r 29.97 -crf 16 -c:a libfdk_aac -b:a 256k -cutoff 18000 -t 5 tmpoutput1.mp4

    Here is the command I am using to encode my video :

    ffmpeg -i input.f4v -c:v libx264 -preset slow -g 60 -r 29.97 -crf 16 -c:a libfdk_aac -b:a 256k -cutoff 18000 tmpoutput2.mp4

    Here is the command I use to convert both of them to .ts to get ready for concat :

    ffmpeg -i tmpoutput1.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts tmpoutput1.ts

    And finally the concat (which is where I get crazy video corruption, everything along the way looks fine) :

    ffmpeg -i "concat:tmpoutput1.ts|tmpoutput2.ts" -c copy output.mp4

    Again, the issue is that I’m already transcoding everything once and I should be able to get it to transcode in a similar enough structure so that it can be concatenated without another transcode tacked onto the end.

    Has anyone successfully added a full-frame splash graphic to the front of a video with ffmpeg before ? I am using a brand new cross-compile of ffmpeg as I thought that might be the issue, but alas, the issue persists after the update.

    Thanks !

  • Converting video to a full sized image using all frames

    13 décembre 2014, par sroot

    I was wondering if there is any way to convert a video to an image ?
    Something like a scanner algorithm , something that would basically take all frames and convert it into one big image ?
    I know i can break the video into frames and then stitch them together , I was wondering if there is any faster and more simple solution to achieve the same .
    If it can’t be done can someone think how can I take the video in a "scanner" like mechanism ?

  • Downloading a video with full capacity of my PC with FFMPEG [closed]

    25 juin 2020, par akamai

    I'm trying to download a M3U8 video with FFmpeg.
    
ffmpeg -i "www.example.com/video.mp4" -c copy -bsf:a aac_adtstoasc output.mp4

    


    FFmpeg downloads very slowly compared to a direct download. I'm on a 1 Gigabit network and it take around 1 hour to download the entire video.

    


    I read the documentation and they mentioned about CPU Flag
But I don't know if that will solve my problem.

    


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