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Autres articles (42)

  • La file d’attente de SPIPmotion

    28 novembre 2010, par

    Une file d’attente stockée dans la base de donnée
    Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
    Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter ; id_document, l’identifiant numérique du document original à encoder ; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement ; objet, le type d’objet auquel (...)

  • 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 (...)

  • Contribute to documentation

    13 avril 2011

    Documentation is vital to the development of improved technical capabilities.
    MediaSPIP welcomes documentation by users as well as developers - including : critique of existing features and functions articles contributed by developers, administrators, content producers and editors screenshots to illustrate the above translations of existing documentation into other languages
    To contribute, register to the project users’ mailing (...)

Sur d’autres sites (4157)

  • huffyuvdec : implement trick

    3 juin 2014, par Christophe Gisquet
    huffyuvdec : implement trick

    When the joint table does not contain a valid entry, the decoding restarts
    
from scratch. By implementing the trick of jumping to the 2nd level of the
    
individual table (and inlining the whole), a speed improvement of 5-10%
    
is possible.
    

    On a 1000-frames YUV4:2:0 video, before :
    
362851 decicycles in 422, 262094 runs, 50 skips
    
182488 decicycles in gray, 262087 runs, 57 skips
    
Object size : 23584
    
Overall time : 8.377
    

    After :
    
346800 decicycles in 422, 262079 runs, 65 skips
    
168197 decicycles in gray, 262077 runs, 67 skips
    
Object size : 23188
    
Overall time : 7.878
    

    Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
    • [DH] libavcodec/huffyuvdec.c

  • avcodec/mediacodecdec : warn when input buffers are not configured with proper size

    5 septembre 2019, par Aman Gupta
    avcodec/mediacodecdec : warn when input buffers are not configured with proper size

    In rare circumstances, if the codec is not configured with the
    
proper parameters the input buffers can be allocated with a size
    
that's too small to hold an individual packet. Since MediaCodec
    
expects exactly one incoming buffer with a given PTS, it is not
    
valid to split data for a given PTS across two input buffers.
    

    See https://developer.android.com/reference/android/media/MediaCodec#data-processing:
    

      > Do not submit multiple input buffers with the same timestamp
    

    Signed-off-by : Aman Gupta <aman@tmm1.net>
    • [DH] libavcodec/mediacodecdec.c

  • fftools/ffmpeg_dec : abort if avcodec_send_packet() returns EAGAIN

    22 mai 2023, par James Almer
    fftools/ffmpeg_dec : abort if avcodec_send_packet() returns EAGAIN

    As the comment in the code mentions, EAGAIN is not an expected value here
    
because we call avcodec_receive_frame() until all frames have been returned.
    
avcodec_send_packet() returning EAGAIN means a packet is still buffered, which
    
hints that the underlying decoder is buggy and not fetching packets as it
    
should.
    

    An example of this behavior was in the libdav1d wrapper before f209614290,
    
where feeding it split frames (or individual OBUs) would result in the CLI
    
eventually printing the confusing "Error submitting packet to decoder : Resource
    
temporarily unavailable" error message, and just keep going until EOF without
    
returning new frames.
    

    Signed-off-by : James Almer <jamrial@gmail.com>
    • [DH] fftools/ffmpeg_dec.c

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