Recherche avancée

Médias (17)

Mot : - Tags -/wired

Autres articles (110)

  • 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 (...)

  • 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 (...)

  • ANNEXE : Les plugins utilisés spécifiquement pour la ferme

    5 mars 2010, par

    Le site central/maître de la ferme a besoin d’utiliser plusieurs plugins supplémentaires vis à vis des canaux pour son bon fonctionnement. le plugin Gestion de la mutualisation ; le plugin inscription3 pour gérer les inscriptions et les demandes de création d’instance de mutualisation dès l’inscription des utilisateurs ; le plugin verifier qui fournit une API de vérification des champs (utilisé par inscription3) ; le plugin champs extras v2 nécessité par inscription3 (...)

Sur d’autres sites (13666)

  • lavu/aes : add runtime dispatch for crypt function

    12 octobre 2015, par Rodger Combs
    lavu/aes : add runtime dispatch for crypt function
    
    • [DH] libavutil/aes.c
    • [DH] libavutil/aes_internal.h
  • Controlling ffmpeg at runtime with zmq

    3 avril 2023, par Gavin

    I want to dynamically change the rectilinear view (eg its yaw) of a 360 video as it plays.

    


    basic command

    


    To take a 360 video and show a flat/normal view at a yaw perspective of 60 degrees

    


    ffmpeg -i input360.mp4 -vf "v360=input=e:rectilinear:yaw=60,scale=iw/4:-1" out60.mp4
This works fine.

    


    Changing the yaw during playback

    


    I understand ffmpeg has two methods to change filter params at runtime ; sendcmd (file based) and zmq (message based)

    


    I got sendcmd method working, but am struggling to understand zmq syntax and use. ffmpeg's zmq docs are pretty sparse.
I am using a local Windows 10 PC

    


    sendcmd

    


    ffplay -i input360.mp4 -vf "sendcmd=f=cmd.txt,v360=input=e:rectilinear:reset_rot=1,scale=iw/4:-1"

    


    with a cmd.txt file

    


    0-5 [expr] v360 yaw 'lerp(0,90,TI)';
5-10 [expr] v360 yaw 'lerp(90,0,TI)';


    


    result : yaw changes from 0 to 90 degrees from t=0-5s and then 90 to 0 degrees from t=5-10s. Perfect

    


    zmq

    


    ffplay -i input360.mp4 -vf "v360=input=e:rectilinear:reset_rot=1,zmq,scale=iw/4:-1"

    


    I got zmqsend from ffmpeg-tools.zip and added to my ffmpeg bin directory

    


      

    1. execute above ffplay command from terminal window #1 - and see video playing

      


    2. 


    3. Open terminal window #2 and execute : echo v360 yaw 90 > zmqsend

      


    4. 


    


    result : no change to video yaw. No errors either

    


    What am I doing wrong ? Im not sure if my ffmpeg command is wrong, or if my zmq message does not reach ffmpeg (or both). I checked my ffmpeg v2022-10-10 config has —enable-libzmq

    


  • Revision 24fbfa42f1 : Require armv6/media when building armv7 When building with runtime cpu detect a

    29 juillet 2014, par Johann

    Changed Paths :
     Modify /build/make/rtcd.pl



    Require armv6/media when building armv7

    When building with runtime cpu detect assume that armv7 targets can be
    relied upon to have at least armv6 support. This may allow dead code
    detectors to remove some _c functions.

    Change-Id : Iaec4414011fcbbdf6f4ed0d90ef4a8fe8af540b5