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  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

Sur d’autres sites (14140)

  • ffmpeg Error : Pattern type 'glob' was selected but globbing is not support ed by this libavformat build

    14 septembre 2017, par Aryan Naim

    I’m trying to convert group of ".jpg" files acting as individual frames into 1 single mpeg video ".mp4"

    Example parameters i used :

    frame duration  = 2 secs
    
frame rate      = 30  fps
    
encoder         = libx264 (mpeg)
    
input pattern   = "*.jpg"
    
output pattern  = video.mp4

    Based on ffmpeg wiki instructions at (https://trac.ffmpeg.org/wiki/Create%20a%20video%20slideshow%20from%20images), I issued this command :

    ffmpeg -framerate 1/2 -pattern_type glob -i "*.jpg" -c:v libx264 -r 30 -pix_fmt yuv420p video.mp4

    But I’m getting this error :

    [image2 @ 049ab120] Pattern type 'glob' was selected but globbing is not 
    
supported by this libavformat build *.jpg: Function not implemented

    Which probably means the API pattern matching commands for my build/version have changed. By the way this my windows 32bit ffmpeg download build (ffmpeg-20150702-git-03b2b40-win32-static).

    How can I choose a group of files using pattern matching using ffmpeg ?

  • Combining Audio and Video file in python [duplicate]

    8 juin 2020, par yso

    I'm trying to understand how to us ffmpeg to combine video and audio files in python. I want to combine a .avi file and a .wav file to create a final .avi file. Is this the right approach ? I'm confused by the ffmpeg syntax.
Any help would be great.

    



    I was looking through this for help :
https://wiki.libav.org/Snippets/avconv#Combine_audio_and_video_file

    



    import ffmpeg
import subprocess

cmd = 'ffmpeg -i inputvideo.avi -i inputaudio.wav -c:v copy -c:a aac output_video_and audio.avi'
subprocess.call(cmd, shell=True)                                     # "Muxing Done
print('Muxing Done')


    


  • Revision 86bb6df005 : Fixed point reference picture scaling Fixed point scaling factors are calculate

    10 juin 2013, par Tero Rintaluoma

    Changed Paths :
     Modify /vp9/common/vp9_blockd.h


     Modify /vp9/common/vp9_reconinter.c


     Modify /vp9/encoder/vp9_rdopt.c



    Fixed point reference picture scaling

    Fixed point scaling factors are calculated once for each
    reference frame by using integer division. Otherwise fixed point
    scaling routines are used in all scaling calculations. This makes it
    possible to calculate fixed point scaling factors on device driver
    software and pass them to hardware and thus avoid division on hardware.

    TODO :
    - Missing check for maximum frame dimensions
    (currently scaling uses 14 bits)
    - Missing check for maximum scaling ratio
    (upscaling 16:1, downscaling 2:1)

    Problems :
    - Straightforward fixed point implementation can cause error +-1
    compared to integer division (i.e. in x_step_q4). Should only
    be an issue for frames larger than 16k.

    Change-Id : I3cf4dabd610a4dc18da3bdb31ae244ebaf5d579c

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