Recherche avancée

Médias (3)

Mot : - Tags -/image

Autres articles (100)

  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • Personnaliser les catégories

    21 juin 2013, par

    Formulaire de création d’une catégorie
    Pour ceux qui connaissent bien SPIP, une catégorie peut être assimilée à une rubrique.
    Dans le cas d’un document de type catégorie, les champs proposés par défaut sont : Texte
    On peut modifier ce formulaire dans la partie :
    Administration > Configuration des masques de formulaire.
    Dans le cas d’un document de type média, les champs non affichés par défaut sont : Descriptif rapide
    Par ailleurs, c’est dans cette partie configuration qu’on peut indiquer le (...)

  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
    For older browsers the Flowplayer flash fallback is used.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

Sur d’autres sites (7095)

  • using pipes to channel file i/o to another process

    13 juin 2013, par Microkernel

    Just started learning/using pipes and was wondering how to route file output of an application into a pipe so that another application can use it.

    To be exact, I want to pipe ffmpeg's output (transcoded video data) into my application to use it. If I create a named pipe like /tmp/out.mp4 and give it to ffmpeg as output filename, ffmpeg is going to try to create this file again, probably overwriting my pipe (Or something like that). How to deal with this kind of situation ?

    is there any general way to divert File IO of an application transparently ?

    (I am trying to write a video streaming server (Just for learning and fun) which transcodes formats like avi into streaming friendly format like mpeg4 during streaming, I found ffmpeg to be too slow for this purpose, it was taking like 2 secs to transcode 1 sec video :(

    Is it the problem with my setup/PC or ffmpeg is known for sluggishness ?
    )

    PS : I am writing this in C by the way.

  • NVENC_HEVC Encoding making my files larger

    9 novembre 2016, par Alan

    I got a new Nvidia GPU to speed up my video encoding. I am working with x264 files to x265 and wanted to go faster. Using the library libx265 I am getting about 85fps when working on a file that is 720p, but if I use the nvenc_hevc I get around 600-700fps

    My input file is 269M and when I use the nvenc_hevc it grows to 394M. Doing the exact same command with libx265 gives me a file size of only 68M. Obviously I would like to keep the low file size, but take advantage of the GPU to process it 15X faster.

    Anyone else have any experience with this video codec ?

    My command is : ffmpeg -i infile.avi -c:v nvenc_hevc -rc vbr_2pass -rc-lookahead 20 -gpu any out7.mp4

    vs

    ffmpeg -i infile.avi -c:v libx265 -rc vbr_2pass -rc-lookahead 20 -gpu any out7.mp4

  • ffmpeg - create a morph video between 2 images (png solid hex color) 0.55 seconds for a length of 10 seconds

    19 décembre 2022, par iceget

    currently i create with imagick (convert -size 640x480 xc :#FF000 hex1.png and hex2.png) 2 png images and save both png files.

    


    now i need the following (but i have no idea how i can do that (maybe ffmpeg ?)) :

    


    create a video 640x480 for example a length of 10 seconds like this method :
0.00s (hex1) > 0.55s (hex2) > 1.10s (hex1) > 1.65s (hex2) > 2.2s (hex1).... until the 10 seconds has reached.

    


    the hex1 and hex2 images should always morph/fade from hex1 => hex2 => hex1, ...

    


    but the time is very critical. the time must be exact always have 0.55.

    


    maybe i can create on same way direct the HEX colors without creating first a png image for that purposes.

    


    can anybody helps me how i can do that best way ?

    


    thank you so much and many greets iceget

    


    currently i have created only a single image with that function :
ffmpeg -loop 1 -i hex1.png -c:v libx264 -t 10 -pix_fmt yuv420p video.mp4

    


Navigation