Recherche avancée

Médias (3)

Mot : - Tags -/plugin

Autres articles (66)

  • Gestion générale des documents

    13 mai 2011, par

    MédiaSPIP ne modifie jamais le document original mis en ligne.
    Pour chaque document mis en ligne il effectue deux opérations successives : la création d’une version supplémentaire qui peut être facilement consultée en ligne tout en laissant l’original téléchargeable dans le cas où le document original ne peut être lu dans un navigateur Internet ; la récupération des métadonnées du document original pour illustrer textuellement le fichier ;
    Les tableaux ci-dessous expliquent ce que peut faire MédiaSPIP (...)

  • Liste des distributions compatibles

    26 avril 2011, par

    Le tableau ci-dessous correspond à la liste des distributions Linux compatible avec le script d’installation automatique de MediaSPIP. Nom de la distributionNom de la versionNuméro de version Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
    Si vous souhaitez nous aider à améliorer cette liste, vous pouvez nous fournir un accès à une machine dont la distribution n’est pas citée ci-dessus ou nous envoyer le (...)

  • 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 (7726)

  • Revision 455f2de20b : Tune tokenization/detokenization flow for speed-up This commit optimizes the to

    30 juillet 2013, par Jingning Han

    Changed Paths :
     Modify /vp9/decoder/vp9_detokenize.c


     Modify /vp9/encoder/vp9_tokenize.c



    Tune tokenization/detokenization flow for speed-up

    This commit optimizes the tokenization and detokenization operational
    flow for speed-up. It makes the coding process about 0.3% faster at
    speed 0.

    Change-Id : I28008df7482874e4b5f237f2d418ff82a249dd56

  • ffmpeg how to ignore (skip) errors when concatenate and speed up multiple video files

    3 avril 2016, par user1767834

    I’m trying to concatenate many files from my car DVR but some time ffmpeg fails with "Invalid argument" error.
    My list of files in cf.txt looks like :

    file '2016_0403_170004_098.MOV'
    
file '2016_0403_170459_099.MOV'
    
file '2016_0403_170630_100.MOV'
    
...

    And I run ffmpeg using next command :

    ffmpeg -f concat -i cf.txt -qscale:v 0 -filter:v "setpts=0.05*PTS" -an e:\MOVIE\all.mov

    After some outputs ffmpeg crushes with message :

    Output #0, mov, to 'e:\MOVIE\all.mov':
    
  Metadata:
    
    encoder         : Lavf56.40.101
    
    Stream #0:0(eng): Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 1920x1
    
080, q=-1--1, 30 fps, 15360 tbn, 30 tbc
    
    Metadata:
    
      creation_time   : 2016-04-03 17:06:27
    
      handler_name    : DataHandler
    
      encoder         : Lavc56.60.100 libx264
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
    
Press [q] to stop, [?] for help
    
Past duration 0.924995 too large
    
frame=    8 fps=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A dup=0 dro
    
frame=   13 fps= 13 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A dup=0 dro
    
frame=   16 fps= 10 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A dup=0 dro
    
frame=   20 fps=9.8 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A dup=0 dro
    
frame=   24 fps=9.4 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A dup=0 dro
    
frame=   28 fps=9.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A dup=0 dro
    
frame=   33 fps=9.1 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A dup=0 dro
    
frame=   38 fps=9.2 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A dup=0 dro
    
frame=   44 fps=9.5 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A dup=0 dro
    
frame=   48 fps=9.4 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A dup=0 dro
    
frame=   53 fps=9.2 q=29.0 size=     350kB time=00:00:00.03 bitrate=85986.4kbits
    
frame=   58 fps=9.2 q=29.0 size=    1195kB time=00:00:00.20 bitrate=48953.0kbits
    
frame=   62 fps=9.1 q=29.0 size=    1959kB time=00:00:00.33 bitrate=48146.4kbits
    
frame=   67 fps=9.1 q=29.0 size=    2607kB time=00:00:00.50 bitrate=42707.9kbits
    
frame=   71 fps=9.0 q=29.0 size=    3136kB time=00:00:00.63 bitrate=40565.1kbits
    
frame=   76 fps=9.0 q=29.0 size=    3817kB time=00:00:00.80 bitrate=39088.0kbits
    
frame=   81 fps=9.1 q=29.0 size=    4361kB time=00:00:00.96 bitrate=36957.1kbits
    
frame=   87 fps=9.2 q=29.0 size=    5093kB time=00:00:01.16 bitrate=35764.3kbits
    
frame=   92 fps=9.3 q=29.0 size=    5748kB time=00:00:01.33 bitrate=35315.2kbits
    
frame=   97 fps=9.3 q=29.0 size=    6332kB time=00:00:01.50 bitrate=34579.5kbits
    
frame=  101 fps=9.2 q=29.0 size=    6810kB time=00:00:01.63 bitrate=34154.9kbits
    
frame=  106 fps=9.3 q=29.0 size=    7534kB time=00:00:01.80 bitrate=34286.2kbits
    
frame=  111 fps=9.3 q=29.0 size=    8158kB time=00:00:01.96 bitrate=33983.4kbits
    
frame=  115 fps=9.2 q=29.0 size=    8721kB time=00:00:02.10 bitrate=34021.8kbits
    
frame=  120 fps=9.3 q=29.0 size=    9405kB time=00:00:02.26 bitrate=33990.6kbits
    
cf.txt: Invalid argument
    
    Last message repeated 4 times
    
frame=  124 fps=7.9 q=-1.0 Lsize=   16574kB time=00:00:04.06 bitrate=33386.9kbit
    
s/s dup=0 drop=1496
    
video:16572kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing
    
 overhead: 0.014025%
    
[libx264 @ 05ab3520] frame I:1     Avg QP:26.62  size:244606
    
[libx264 @ 05ab3520] frame P:65    Avg QP:27.06  size:173968
    
[libx264 @ 05ab3520] frame B:58    Avg QP:29.32  size: 93380
    
[libx264 @ 05ab3520] consecutive B-frames:  6.5% 93.5%  0.0%  0.0%
    
[libx264 @ 05ab3520] mb I  I16..4: 17.6% 60.1% 22.3%
    
[libx264 @ 05ab3520] mb P  I16..4:  3.4%  7.5%  4.8%  P16..4: 31.0% 21.3% 17.8%
    
 0.0%  0.0%    skip:14.2%
    
[libx264 @ 05ab3520] mb B  I16..4:  0.3%  0.6%  1.9%  B16..8: 26.3% 10.8%  6.7%
    
 direct: 6.7%  skip:46.7%  L0:39.3% L1:33.9% BI:26.8%
    
[libx264 @ 05ab3520] 8x8 transform intra:45.4% inter:37.9%
    
[libx264 @ 05ab3520] coded y,uvDC,uvAC intra: 73.1% 54.6% 21.5% inter: 38.7% 28.
    
0% 5.2%
    
[libx264 @ 05ab3520] i16 v,h,dc,p: 25% 41% 22% 12%
    
[libx264 @ 05ab3520] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 17% 27%  6%  4%  5%  5%
    
 8%  8%
    
[libx264 @ 05ab3520] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 17% 11% 15% 10%  8%  8%  8%
    
12% 10%
    
[libx264 @ 05ab3520] i8c dc,h,v,p: 59% 21% 17%  4%
    
[libx264 @ 05ab3520] Weighted P-Frames: Y:9.2% UV:4.6%
    
[libx264 @ 05ab3520] ref P L0: 48.5% 15.0% 21.9% 14.2%  0.3%
    
[libx264 @ 05ab3520] ref B L0: 72.5% 27.5%
    
[libx264 @ 05ab3520] kb/s:32842.44

    See line :

    cf.txt : Invalid argument

    So, I want to ignore this error (and any other if possible) and continue to process the files.
    Is it possible ?

  • yadif : restore speed of the C filtering code

    10 mars 2013, par James Darnley
    yadif : restore speed of the C filtering code

    Always use the special filter for the first and last 3 columns (only).
    

    Changes made in 64ed397 slowed the filter to just under 3/4 of what it
    
was.  This commit restores the speed while maintaining identical output.
    

    For reference, on my Athlon64 :
    
1733222 decicycles in old
    
2358563 decicycles in new
    
1727558 decicycles in this
    

    Signed-off-by : Anton Khirnov <anton@khirnov.net>
    • [DBH] libavfilter/vf_yadif.c
    • [DBH] libavfilter/x86/vf_yadif_init.c
    • [DBH] libavfilter/yadif.h

Navigation