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  • Déploiements possibles

    31 janvier 2010, par

    Deux types de déploiements sont envisageable dépendant de deux aspects : La méthode d’installation envisagée (en standalone ou en ferme) ; Le nombre d’encodages journaliers et la fréquentation envisagés ;
    L’encodage de vidéos est un processus lourd consommant énormément de ressources système (CPU et RAM), il est nécessaire de prendre tout cela en considération. Ce système n’est donc possible que sur un ou plusieurs serveurs dédiés.
    Version mono serveur
    La version mono serveur consiste à n’utiliser qu’une (...)

  • Submit bugs and patches

    13 avril 2011

    Unfortunately a software is never perfect.
    If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
    If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
    You may also (...)

  • 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 (...)

Sur d’autres sites (3537)

  • vc2enc : zero padding of the coefficient buffer

    17 décembre 2019, par Lynne
    vc2enc : zero padding of the coefficient buffer

    Wavelet types with large amounts of overreading/writing like 9_7 would
    
write into the padding at high wavelet depths, which would remain and be
    
read by the next frame's transform and quickly cause artifacts to appear
    
for subsequent frames.
    
This fix affects all frames encoded with a non-power-of-two width, with
    
the artifacts varying between non-observable to very noticeable,
    
depending on encoder settings, so reencoding is advisable.
    • [DH] libavcodec/vc2enc.c

  • Revision 399823b6f5 : Add support for setting byte alignment. Add support for setting byte alignment

    13 novembre 2014, par Frank Galligan

    Changed Paths :
     Add /test/byte_alignment_test.cc


     Modify /test/decode_test_driver.h


     Modify /test/test.mk


     Modify /vp9/common/vp9_alloccommon.c


     Modify /vp9/common/vp9_onyxc_int.h


     Modify /vp9/decoder/vp9_decodeframe.c


     Modify /vp9/encoder/vp9_denoiser.c


     Modify /vp9/encoder/vp9_encoder.c


     Modify /vp9/encoder/vp9_lookahead.c


     Modify /vp9/encoder/vp9_svc_layercontext.c


     Modify /vp9/encoder/vp9_temporal_filter.c


     Modify /vp9/vp9_dx_iface.c


     Modify /vpx/vp8dx.h


     Modify /vpx_scale/generic/yv12config.c


     Modify /vpx_scale/yv12config.h



    Add support for setting byte alignment.

    Add support for setting byte alignment on the Y, U, and V plane of the
    reference buffers. The byte alignment must be a power of 2, from 32 to
    1024. A value of 0 sets legacy alignment.

    Change-Id : I7c1399622f7aa68e123646369216b32047dda73d

  • exporting ogg videos from video slideshow (mp4) and audio (wav) using ffmpeg in python

    17 septembre 2018, par jtz

    I have tried to find a solution already, but just cannot make it work. I want to export an .ogg-video by combining a video slideshow (mp4) with an audio file (wav) by using ffmpeg in python. The audio is shorter than the video and should have an offset of 2000 milliseconds, so that it starts approximately in the middle of the video. The code that I tried is essentially this :

    subprocess.call(’ffmpeg.exe -itsoffset 0 -i slideshows/slideshow.mp4 -itsoffset 2000 -i sounds/audio.wav -codec:v libtheora -codec:a libvorbis output.ogg’, shell= True)

    FYI : I need to create a couple of different video formats from the video and audio input, so substituting the ogg with a different format is no option. I have already successfully created .mp4-video-files and .webm-video-files from the material, but need the .ogg in addition. Also, Power Point does not like any of the exported videos, maybe this might be relevant for finding the problem here (I also unsuccessfully tried to fix this issue).

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