Advanced search

Medias (91)

Other articles (111)

  • Personnaliser les catégories

    21 June 2013, by

    Formulaire de création d’une catégorie
    Pour ceux qui connaissent bien SPIP, une catégorie peut être assimilée à une rubrique.
    Dans le cas d’un document de type catégorie, les champs proposés par défaut sont : Texte
    On peut modifier ce formulaire dans la partie :
    Administration > Configuration des masques de formulaire.
    Dans le cas d’un document de type média, les champs non affichés par défaut sont : Descriptif rapide
    Par ailleurs, c’est dans cette partie configuration qu’on peut indiquer le (...)

  • Ajouter notes et légendes aux images

    7 February 2011, by

    Pour pouvoir ajouter notes et légendes aux images, la première étape est d’installer le plugin "Légendes".
    Une fois le plugin activé, vous pouvez le configurer dans l’espace de configuration afin de modifier les droits de création / modification et de suppression des notes. Par défaut seuls les administrateurs du site peuvent ajouter des notes aux images.
    Modification lors de l’ajout d’un média
    Lors de l’ajout d’un média de type "image" un nouveau bouton apparait au dessus de la prévisualisation (...)

  • ANNEXE : Les plugins utilisés spécifiquement pour la ferme

    5 March 2010, by

    Le site central/maître de la ferme a besoin d’utiliser plusieurs plugins supplémentaires vis à vis des canaux pour son bon fonctionnement. le plugin Gestion de la mutualisation; le plugin inscription3 pour gérer les inscriptions et les demandes de création d’instance de mutualisation dès l’inscription des utilisateurs; le plugin verifier qui fournit une API de vérification des champs (utilisé par inscription3); le plugin champs extras v2 nécessité par (...)

On other websites (10259)

  • Revision e890c2579b: add a context tree structure to encoder This patch sets up a quad_tree structur

    17 April 2014, by Jim Bankoski

    Changed Paths:
     Modify /vp9/encoder/vp9_block.h


     Add /vp9/encoder/vp9_context_tree.c


     Add /vp9/encoder/vp9_context_tree.h


     Modify /vp9/encoder/vp9_encodeframe.c


     Modify /vp9/encoder/vp9_firstpass.c


     Modify /vp9/encoder/vp9_onyx_if.c


     Modify /vp9/vp9cx.mk



    add a context tree structure to encoder

    This patch sets up a quad_tree structure (pc_tree) for holding all of
    pick_mode_context data we use at any square block size during encoding
    or picking modes. That includes contexts for 2 horizontal and 2 vertical
    splits, one none, and pointers to 4 sub pc_tree nodes corresponding
    to split. It also includes a pointer to the current chosen partitioning.

    This replaces code that held an index for every level in the pick
    modes array including: sb_index, mb_index,
    b_index, ab_index.

    These were used as stateful indexes that pointed to the current pick mode
    contexts you had at each level stored in the following arrays

    array ab4x4_context[][][],
    sb8x4_context[][][], sb4x8_context[][][], sb8x8_context[][][],
    sb8x16_context[][][], sb16x8_context[][][], mb_context[][], sb32x16[][],
    sb16x32[], sb32_context[], sb32x64_context[], sb64x32_context[],
    sb64_context

    and the partitioning that had been stored in the following:
    b_partitioning, mb_partitioning, sb_partitioning, and sb64_partitioning.

    Prior to this patch before doing an encode you had to set the appropriate
    index for your block size ( switch statement), update it ( up to 3
    lookups for the index array value) and then make your call into a recursive
    function at which point you'd have to call get_context which then
    had to do a switch statement based on the blocksize, and then up to 3
    lookups based upon the block size to find the context to use.

    With the new code the context for the block size is passed around directly
    avoiding the extraneous switch statements and multi dimensional array
    look ups that were listed above. At any level in the search all of the
    contexts are local to the pc_tree you are working on (in?).

    In addition in most places code that used to call sub functions and
    then check if the block size was 4x4 and index was > 0 and return
    now don't preferring instead to call the right none function on the inside.

    Change-Id: I06e39318269d9af2ce37961b3f95e181b57f5ed9

  • getting errors from FFMpeg when spawned from .NET

    18 March 2014, by Brannon

    When I run FFMpeg from the command line like this

    ffmpeg.exe -hwaccel auto -re -i "C:\Users\Public\Videos\Sample Videos\Wildlife.wmv" -an -sn -c:v bmp -pix_fmt bgr24 -f rawvideo - > junk.bin

    it works fine. However, when I spawn the exact same thing (minus > junk.bin) I get this nasty "bad header" error after a few seconds of playback. What is causing this? I have trouble believing my process blocks the pipe longer than the filesystem does, but it should be able to block the pipe indefinitely without defeating the decoding. The truncated stderr is below. My code to spawn the thing is here.

    ffmpeg version N-60761-g916a792 Copyright (c) 2000-2014 the FFmpeg developers
    
  built on Feb 19 2014 21:57:22 with gcc 4.8.2 (GCC)
    
  configuration: --target-os=mingw32 --enable-shared --enable-runtime-cpudetect
    
  libavutil      52. 65.100 / 52. 65.100
    
  libavcodec     55. 52.102 / 55. 52.102
    
  libavformat    55. 33.100 / 55. 33.100
    
  libavdevice    55. 10.100 / 55. 10.100
    
  libavfilter     4.  1.103 /  4.  1.103
    
  libswscale      2.  5.101 /  2.  5.101
    
  libswresample   0. 17.104 /  0. 17.104
    
cygwin warning:
    
  MS-DOS style path detected: C:\Users\Public\Videos\Sample Videos\Wildlife.wmv
    
  Preferred POSIX equivalent is: /cygdrive/c/Users/Public/Videos/Sample Videos/Wildlife.wmv
    
  CYGWIN environment variable option "nodosfilewarning" turns off this warning.
    
  Consult the user's guide for more details about POSIX paths:
    
    http://cygwin.com/cygwin-ug-net/using.html#using-pathnames
    
[asf @ 0x600059480] Stream #0: not enough frames to estimate rate; consider increasing probesize
    
Guessed Channel Layout for  Input Stream #0.0 : stereo
    
Input #0, asf, from 'C:\Users\Public\Videos\Sample Videos\Wildlife.wmv':
    
  Metadata:
    
    SfOriginalFPS   : 299700
    
    WMFSDKVersion   : 11.0.6001.7000
    
    WMFSDKNeeded    : 0.0.0.0000
    
    comment         : Footage: Small World Productions, Inc; Tourism New Zealand | Producer: Gary F. Spradling | Music: Steve Ball
    
    title           : Wildlife in HD
    
    copyright       : © 2008 Microsoft Corporation
    
    IsVBR           : 0
    
    DeviceConformanceTemplate: AP@L3
    
  Duration: 00:00:30.09, start: 0.000000, bitrate: 6977 kb/s
    
    Stream #0:0(eng): Audio: wmav2 (a[1][0][0] / 0x0161), 44100 Hz, stereo, fltp, 192 kb/s
    
    Stream #0:1(eng): Video: vc1 (Advanced) (WVC1 / 0x31435657), yuv420p, 1280x720, 5942 kb/s, 29.97 tbr, 1k tbn, 1k tbc
    
Output #0, rawvideo, to 'pipe:':
    
  Metadata:
    
    SfOriginalFPS   : 299700
    
    WMFSDKVersion   : 11.0.6001.7000
    
    WMFSDKNeeded    : 0.0.0.0000
    
    comment         : Footage: Small World Productions, Inc; Tourism New Zealand | Producer: Gary F. Spradling | Music: Steve Ball
    
    title           : Wildlife in HD
    
    copyright       : © 2008 Microsoft Corporation
    
    IsVBR           : 0
    
    DeviceConformanceTemplate: AP@L3
    
    encoder         : Lavf55.33.100
    
    Stream #0:0(eng): Video: bmp, bgr24, 1280x720, q=2-31, 200 kb/s, 90k tbn, 29.97 tbc
    
Stream mapping:
    
  Stream #0:1 -> #0:0 (vc1 -> bmp)
    
Press [q] to stop, [?] for help
    
frame=    3 fps=0.0 q=0.0 size=    8100kB time=00:00:00.10 bitrate=662902.1kbits/s    
    
frame=   29 fps= 26 q=0.0 size=   78302kB time=00:00:00.96 bitrate=662902.3kbits/s    
    
frame=   50 fps= 30 q=0.0 size=  135003kB time=00:00:01.66 bitrate=662902.2kbits/s    
    
frame=   65 fps= 30 q=0.0 size=  175503kB time=00:00:02.16 bitrate=662902.2kbits/s    
    
frame=   80 fps= 30 q=0.0 size=  216004kB time=00:00:02.66 bitrate=662902.1kbits/s    
    
frame=   95 fps= 30 q=0.0 size=  256505kB time=00:00:03.16 bitrate=662902.1kbits/s    
    
[asf @ 0x600059480] ff asf bad header 74  at:5053733
    
[asf @ 0x600059480] invalid packet_length -1908511255 at:5053740
    
[asf @ 0x600059480] ff asf bad header d4  at:5053759
    
[asf @ 0x600059480] ff asf skip 55629 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5181733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5189733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5197733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5205733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5213733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5221733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5229733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5237733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5245733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5357733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5365733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5373733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5381733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5493733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5501733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5509733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5517733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5629733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5637733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5645733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5653733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5701733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5709733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5717733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5725733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5805733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5813733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5821733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5829733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5877733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5885733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5893733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5901733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5949733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5957733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5965733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5973733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] packet_obj_size invalid
    
    Last message repeated 15 times
    
[asf @ 0x600059480] unexpected packet_replic_size of 2
    
[asf @ 0x600059480] packet_obj_size invalid
    
    Last message repeated 7 times
    
[asf @ 0x600059480] ff asf skip 2562 (unknown stream)
    
[asf @ 0x600059480] packet_obj_size invalid
    
    Last message repeated 3 times
    
[asf @ 0x600059480] ff asf skip 448 (unknown stream)
    
[asf @ 0x600059480] packet_obj_size invalid
    
    Last message repeated 9 times
    
[asf @ 0x600059480] unexpected packet_replic_size of 6
    
[asf @ 0x600059480] packet_obj_size invalid
    
    Last message repeated 7 times
    
[asf @ 0x600059480] packet_frag_size is invalid (1749-9)
    
[asf @ 0x600059480] packet_obj_size invalid
    
    Last message repeated 13 times
    
[asf @ 0x600059480] packet_frag_size is invalid (1749-9)
    
[asf @ 0x600059480] packet_obj_size invalid
    
    Last message repeated 24 times
    
[asf @ 0x600059480] unexpected packet_replic_size of 6
    
[asf @ 0x600059480] packet_obj_size invalid
    
    Last message repeated 6 times
    
[asf @ 0x600059480] unexpected packet_replic_size of 5
    
[asf @ 0x600059480] packet_obj_size invalid
    
    Last message repeated 6 times
    
[asf @ 0x600059480] packet_frag_size is invalid (1749-9)
    
[asf @ 0x600059480] packet_obj_size invalid
    
[asf @ 0x600059480] packet_frag_size is invalid (1749-9)
    
[asf @ 0x600059480] packet_obj_size invalid
    
    Last message repeated 2 times
    
[asf @ 0x600059480] unexpected packet_replic_size of 5
    
[asf @ 0x600059480] packet_obj_size invalid
    
    Last message repeated 8 times
    
[asf @ 0x600059480] unexpected packet_replic_size of 5
    
[asf @ 0x600059480] packet_obj_size invalid
    
    Last message repeated 39 times
    
[asf @ 0x600059480] packet_frag_size is invalid (1749-40)

  • Why same command in FFMPEG takes longer in moviepy?

    15 October 2020, by soroushamdg

    I'm trying to convert a .flv file to .mp4 file using moviepy, when I run follow command in FFMPEG :

    


    ffmpeg -i "movie.flv" -r 1 -preset ultrafast "output.mp4"


    


    It takes about 5 minutes. The input .flv file's fps is 1000 and it's 95 minutes clip. So using command above I'm dropping fps to 1.
But using moviepy, even simple commands, it estimated 96 hours! and it's super slow, this is my python moviepy code:

    


    video = VideoFileClip("movie.flv")
videos[0].write_videofile('multiple_audio_videos.mp4',
                            preset="ultrafast",
                            fps=1,
                            )


    


    I even tried setting output fps using ffmpeg_params like this:

    


    video = VideoFileClip("movie.flv")
videos[0].write_videofile('multiple_audio_videos.mp4',
                                preset="ultrafast",
                                ffmpeg_params=['-r','1'],
                                )


    


    Both are super slow. What should I do to make moviepy export faster?

    


Browsing