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  • 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 (...)

  • Le profil des utilisateurs

    12 avril 2011, par

    Chaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
    L’utilisateur a accès à la modification de profil depuis sa page auteur, un lien dans la navigation "Modifier votre profil" est (...)

  • Selection of projects using MediaSPIP

    2 mai 2011, par

    The examples below are representative elements of MediaSPIP specific uses for specific projects.
    MediaSPIP farm @ Infini
    The non profit organizationInfini develops hospitality activities, internet access point, training, realizing innovative projects in the field of information and communication technologies and Communication, and hosting of websites. It plays a unique and prominent role in the Brest (France) area, at the national level, among the half-dozen such association. Its members (...)

Sur d’autres sites (8892)

  • Revision 5de4368b43 : [spatial svc]Enabl golden frame for base layer and fix wrong ref_frame_flag for

    1er août 2014, par Minghai Shang

    Changed Paths :
     Modify /vp9/encoder/vp9_bitstream.c


     Modify /vp9/encoder/vp9_encoder.c


     Modify /vp9/encoder/vp9_firstpass.c


     Modify /vp9/encoder/vp9_ratectrl.c


     Modify /vp9/encoder/vp9_svc_layercontext.c


     Modify /vp9/encoder/vp9_svc_layercontext.h



    [spatial svc]Enabl golden frame for base layer and fix wrong ref_frame_flag for
    upper layers in first frame

    Change-Id : I1fec9c084b499b2f445b79726066d01b136b59fa

  • ffmpeg output video size limits to 4GB

    14 avril 2015, par rajendra332

    I have a video file of .mp4 format. I want to convert it into .mpeg.
    But when the output file size reaches 4GB, the conversion stops with a message something like "av_interleaved_write_frame() file too large"

    My file system is ext4.

    The commands I used are as below :

    ffmpeg -i "input_file.mp4" -q:v 0 -q:a 0 -c:v mpeg2video "output_file.mpeg"

    ffmpeg -i "input_file.mp4" -q:v 0 -q:a 0 -c:v mpeg2video -fs 8G "output_file.mpeg"

    I understand that the conversion target defaults to DVD, so, the 4GB is the upper limit. can I tweak the target ?

    Or, is it possible to dump the output to a subsequent file2Out.mpeg once file1Out.mpeg reaches 4GB

  • arm : vp9itxfm16 : Avoid reloading the idct32 coefficients

    24 février 2017, par Martin Storsjö
    arm : vp9itxfm16 : Avoid reloading the idct32 coefficients

    Keep the idct32 coefficients in narrow form in q6-q7, and idct16
    
coefficients in lengthened 32 bit form in q0-q3. Avoid clobbering
    
q0-q3 in the pass1 function, and squeeze the idct16 coefficients
    
into q0-q1 in the pass2 function to avoid reloading them.
    

    The idct16 coefficients are clobbered and reloaded within idct32_odd
    
though, since that turns out to be faster than narrowing them and
    
swapping them into q6-q7.
    

    Before :                            Cortex       A7        A8        A9      A53
    
vp9_inv_dct_dct_32x32_sub4_add_10_neon :    22653.8   18268.4   19598.0  14079.0
    
vp9_inv_dct_dct_32x32_sub32_add_10_neon :   37699.0   38665.2   32542.3  24472.2
    
After :
    
vp9_inv_dct_dct_32x32_sub4_add_10_neon :    22270.8   18159.3   19531.0  13865.0
    
vp9_inv_dct_dct_32x32_sub32_add_10_neon :   37523.3   37731.6   32181.7  24071.2
    

    Signed-off-by : Martin Storsjö <martin@martin.st>
    • [DH] libavcodec/arm/vp9itxfm_16bpp_neon.S

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