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  • 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 (...)

  • Multilang : améliorer l’interface pour les blocs multilingues

    18 février 2011, par

    Multilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
    Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela.

  • 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 (9027)

  • How to solve the problem of low performance of complex video generation using ffmpeg ?

    21 novembre 2019, par Zedd

    I use ffmpeg to generate a complex video.

    This video consists of the following materials :

    1. Original video

    2. Video dub

    3. Background music

    4. Subtitle

    My code logic is as follows

    1. Combine ’Original video’ and ’Video dub’ into ’Video A’

    2. Subtitle ’Video A’ as ’Video B’

    3. Add ’Background music’ for ’Video B’ as ’Video C’

    The ’Video C’ is the video I want.

    My Code

    // Step1:
    
ffmpeg -i VideoDub.mp3 -i OriginalVideo.mp4 VideoA.mp4
    
// Step2:
    
ffmpeg -i VideoA.mp4 -vf subtitles=Subtitle.srt -y VideoB.mp4
    
// Step3:
    
ffmpeg -i VideoB.mp4 -i BackgroundMusic.mp3 -filter_complex "[1:a]aloop=loop=-1:size=2e+09[out];[out][0:a]amix" -ss 0 -t 100 -y VideoC.mp4

    Design defect

    • I think my code is very redundant
    • poor performance
    • There are many times of encoding
    • It takes too long to generate such a video
    • The CPU usage has reached 100%.

    My Question

    How to solve the above problem？

  • Revision 5437474c54 : Merge "Revert "Layer based rate control for CBR mode.""

    3 février 2014, par Marco Paniconi

    Merge "Revert "Layer based rate control for CBR mode.""

  • Extract frames from video with ffmpeg - header problem ?

    19 juillet 2019, par Jehol

    I want to convert .AVI files coming from a camera-trap to individuals frames, ideally using ffmpeg. Up to now I am not succeeding.

    The most simple thing I tried, to try to locate the problem, is this (I want all frames and my test file is test.avi) :

    ffmpeg -i test.avi output_%04d.png

    It fails with the following console message :

    [avi @ 0x559fb596f8c0] unknown stream type 73647578
    
[avi @ 0x559fb596f8c0] Something went wrong during header parsing, tag [0][0]id has size 338702712, I will ignore it and try to continue anyway.
    
[mjpeg @ 0x559fb59709e0] No JPEG data found in image
    
    Last message repeated 100 times
    
[avi @ 0x559fb596f8c0] decoding for stream 0 failed
    
[avi @ 0x559fb596f8c0] Could not find codec parameters for stream 0 (Video: mjpeg (MJPG / 0x47504A4D), none(bt470bg/unknown/unknown), 1280x720): unspecified pixel format
    
Consider increasing the value for the 'analyzeduration' and 'probesize' options
    
[avi @ 0x559fb596f8c0] Could not find codec parameters for stream 1 (Video: none (JUNK / 0x4B4E554A), none, 11025x22050): unknown codec
    
Consider increasing the value for the 'analyzeduration' and 'probesize' options
    
Input #0, avi, from 'test.avi':
    
  Duration: 00:00:10.50, start: 0.000000, bitrate: 28129 kb/s
    
    Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), none(bt470bg/unknown/unknown), 1280x720, 20.01 fps, 20.01 tbr, 20.01 tbn, 20.01 tbc
    
    Stream #0:1: Video: none (JUNK / 0x4B4E554A), none, 11025x22050, 11025 tbr, 11025 tbn, 11025 tbc
    
Stream mapping:
    
  Stream #0:1 -> #0:0 (? (?) -> png (native))
    
Decoder (codec none) not found for input stream #0:1

    The actual video duration is 10s (when read using vlc for instance, and this is indeed the length of video programmed on the camera-trap. ffmpeg says the duration is 10.50s, and says there is a problem with header parsing (see above).

    I have no idea how to sort this, despite having looked at more than many ffmpeg ’convert video to frames’ post. Any hint would be appreciated, thanks.

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