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  • 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 (...)

  • List of compatible distributions

    26 avril 2011, par

    The table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number 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
    If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...)

  • 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 (...)

Sur d’autres sites (4967)

  • capture my webcam and encode to mp4 with ffmpeg, but the x264 works bad

    17 septembre 2015, par zhangxm1991

    here is my version :
    ffmpeg version : 2.3.3
    libx264 version:142.x

    I wat to capture my video and use ffmpeg and x264 to a mp4 file. the solution is 320x240.
    But i found that the video file is so big. Then i found that the P frame and B frame is very big, even nearly equal to the I frame.I do not know why.

    here is my code :

        c->codec_id = codec_id;
    
    c->bit_rate = 400000;
    
    c->width    = 320;
    
    c->height   = 240;
    
    c->time_base.den = 10;
    
    c->time_base.num = 1;
    
    c->pix_fmt       = AV_PIX_FMT_YUV420P;

    Here is my program output :

    [libx264 @ 0xb6200fc0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX 
    

    
[libx264 @ 0xb6200fc0] profile High, level 1.3
    

    
[libx264 @ 0xb6200fc0] 264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=10 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=400 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    

    
Output #0, mp4, to '/home/2014_09_12/0002b6429579/5/2014_09_12_18_39_12_600.mp4':
    

    
    Stream #0:0: Video: h264 (libx264), yuv420p, 320x240, q=-1--1, 400 kb/s, 10 tbc
    

    
    Stream #0:1: Audio: aac, 8000 Hz, mono, fltp, 32 kb/s
    

    
[mp4 @ 0xb62005e0] Using AVStream.codec.time_base as a timebase hint to the muxer is deprecated. Set AVStream.time_base instead.
    

    
[mp4 @ 0xb62005e0] Using AVStream.codec.time_base as a timebase hint to the muxer is deprecated. Set AVStream.time_base instead.
    

    
[mp4 @ 0xb62005e0] Encoder did not produce proper pts, making some up.
    

    
[libx264 @ 0xb6200fc0] frame I:3     Avg QP: 2.79  size: 72996
    

    
[libx264 @ 0xb6200fc0] frame P:383   Avg QP: 0.14  size: 54075
    

    
[libx264 @ 0xb6200fc0] frame B:216   Avg QP: 1.95  size: 64784
    

    
[libx264 @ 0xb6200fc0] consecutive B-frames: 30.1% 63.2%  6.0%  0.7%
    

    
[libx264 @ 0xb6200fc0] mb I  I16..4: 16.1% 12.7% 71.2%
    

    
[libx264 @ 0xb6200fc0] mb P  I16..4:  3.5%  5.1% 15.9%  P16..4: 20.3% 22.8% 14.0%  0.0%  0.0%    skip:18.3%
    

    
[libx264 @ 0xb6200fc0] mb B  I16..4:  0.4%  2.5%  8.2%  B16..8: 32.6% 19.8% 13.5%  
    
direct:22.2%  skip: 0.8%  L0:25.5% L1:12.8% BI:61.6%
    

    
[libx264 @ 0xb6200fc0] final ratefactor: -32.89
    

    
[libx264 @ 0xb6200fc0] 8x8 transform intra:21.0% inter:29.6%
    

    
[libx264 @ 0xb6200fc0] coded y,uvDC,uvAC intra: 100.0% 100.0% 100.0% inter: 83.3% 80.9% 80.9%
    

    
[libx264 @ 0xb6200fc0] i16 v,h,dc,p:  5%  7% 42% 46%
    

    
[libx264 @ 0xb6200fc0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 14% 12% 23%  8%  6%  6%  8%  9% 14%
    

    
[libx264 @ 0xb6200fc0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 12% 11% 19% 10%  8%  8% 10% 10% 12%
    

    
[libx264 @ 0xb6200fc0] i8c dc,h,v,p: 78%  3%  4% 15%
    

    
[libx264 @ 0xb6200fc0] Weighted P-Frames: Y:0.5% UV:0.3%
    

    
[libx264 @ 0xb6200fc0] ref P L0: 43.4% 14.6% 19.0% 22.9%  0.1%
    

    
[libx264 @ 0xb6200fc0] ref B L0: 63.3% 35.7%  1.1%
    

    
[libx264 @ 0xb6200fc0] ref B L1: 97.0%  3.0%
    

    
[libx264 @ 0xb6200fc0] kb/s:4.53
    

    
[aac @ 0xb6201ba0] 2 frames left in the queue on closing

  • capture my webcam and encode to mp4 with ffmpeg, but the x264 works bad

    17 septembre 2015, par zhangxm1991

    here is my version :
    ffmpeg version : 2.3.3
    libx264 version:142.x

    I wat to capture my video and use ffmpeg and x264 to a mp4 file. the solution is 320x240.
    But i found that the video file is so big. Then i found that the P frame and B frame is very big, even nearly equal to the I frame.I do not know why.

    here is my code :

        c->codec_id = codec_id;
    
    c->bit_rate = 400000;
    
    c->width    = 320;
    
    c->height   = 240;
    
    c->time_base.den = 10;
    
    c->time_base.num = 1;
    
    c->pix_fmt       = AV_PIX_FMT_YUV420P;

    Here is my program output :

    [libx264 @ 0xb6200fc0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX 
    

    
[libx264 @ 0xb6200fc0] profile High, level 1.3
    

    
[libx264 @ 0xb6200fc0] 264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=10 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=400 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    

    
Output #0, mp4, to '/home/2014_09_12/0002b6429579/5/2014_09_12_18_39_12_600.mp4':
    

    
    Stream #0:0: Video: h264 (libx264), yuv420p, 320x240, q=-1--1, 400 kb/s, 10 tbc
    

    
    Stream #0:1: Audio: aac, 8000 Hz, mono, fltp, 32 kb/s
    

    
[mp4 @ 0xb62005e0] Using AVStream.codec.time_base as a timebase hint to the muxer is deprecated. Set AVStream.time_base instead.
    

    
[mp4 @ 0xb62005e0] Using AVStream.codec.time_base as a timebase hint to the muxer is deprecated. Set AVStream.time_base instead.
    

    
[mp4 @ 0xb62005e0] Encoder did not produce proper pts, making some up.
    

    
[libx264 @ 0xb6200fc0] frame I:3     Avg QP: 2.79  size: 72996
    

    
[libx264 @ 0xb6200fc0] frame P:383   Avg QP: 0.14  size: 54075
    

    
[libx264 @ 0xb6200fc0] frame B:216   Avg QP: 1.95  size: 64784
    

    
[libx264 @ 0xb6200fc0] consecutive B-frames: 30.1% 63.2%  6.0%  0.7%
    

    
[libx264 @ 0xb6200fc0] mb I  I16..4: 16.1% 12.7% 71.2%
    

    
[libx264 @ 0xb6200fc0] mb P  I16..4:  3.5%  5.1% 15.9%  P16..4: 20.3% 22.8% 14.0%  0.0%  0.0%    skip:18.3%
    

    
[libx264 @ 0xb6200fc0] mb B  I16..4:  0.4%  2.5%  8.2%  B16..8: 32.6% 19.8% 13.5%  
    
direct:22.2%  skip: 0.8%  L0:25.5% L1:12.8% BI:61.6%
    

    
[libx264 @ 0xb6200fc0] final ratefactor: -32.89
    

    
[libx264 @ 0xb6200fc0] 8x8 transform intra:21.0% inter:29.6%
    

    
[libx264 @ 0xb6200fc0] coded y,uvDC,uvAC intra: 100.0% 100.0% 100.0% inter: 83.3% 80.9% 80.9%
    

    
[libx264 @ 0xb6200fc0] i16 v,h,dc,p:  5%  7% 42% 46%
    

    
[libx264 @ 0xb6200fc0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 14% 12% 23%  8%  6%  6%  8%  9% 14%
    

    
[libx264 @ 0xb6200fc0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 12% 11% 19% 10%  8%  8% 10% 10% 12%
    

    
[libx264 @ 0xb6200fc0] i8c dc,h,v,p: 78%  3%  4% 15%
    

    
[libx264 @ 0xb6200fc0] Weighted P-Frames: Y:0.5% UV:0.3%
    

    
[libx264 @ 0xb6200fc0] ref P L0: 43.4% 14.6% 19.0% 22.9%  0.1%
    

    
[libx264 @ 0xb6200fc0] ref B L0: 63.3% 35.7%  1.1%
    

    
[libx264 @ 0xb6200fc0] ref B L1: 97.0%  3.0%
    

    
[libx264 @ 0xb6200fc0] kb/s:4.53
    

    
[aac @ 0xb6201ba0] 2 frames left in the queue on closing

  • Stream webcam using ffmpeg/avconv to RTMP libx264 doesn't work

    15 mars 2016, par Erez Posner

    i have been trying to stream my webcam to Ustream using RTMP.

    using the standard command works great :

    "avconv -f video4linux2 -r 25 -s 320x240 -i /dev/video0 -f flv rtmp ://host/pass"

    but i encoutner a 15 seconds latency !
    therefore i decided to compress the video using libx264.
    i downloaded it and confirmed it is installed properly.
    but when running this command :

    "avconv -f video4linux2 -r 25 -s 320x240 -i /dev/video0 -c:v libx264 -pix_fmt yuv420p-f flv rtmp ://host/pass"

    on ffmpeg i get "Illegal instruction"
    and under avconv it starts to stream but nothing is shown in Ustream channel.

    output from avconv command

    avconv version 9.14-6:9.14-1rpi1rpi1, Copyright (c) 2000-2014 the
    
Libav developers
    
built on Jul 22 2014 15:08:12 with gcc 4.6 (Debian 4.6.3-14+rpi1)
    
[video4linux2 @ 0x709740] The driver changed the time per frame from 1/5 to 1/30
    
    [video4linux2 @ 0x709740] Estimating duration from bitrate, this may
    
    be inaccurate
    
    Input #0, video4linux2, from '/dev/video0':
    
      Duration: N/A, start: 5069.991764, bitrate: 36864 kb/s
    
        Stream #0.0: Video: rawvideo, yuyv422, 320x240, 36864 kb/s, 1000k    tbn, 30 tbc
    
    [libx264 @ 0x70a9e0] using cpu capabilities: none!
    
    [libx264 @ 0x70a9e0] profile High, level 1.2
    
    [libx264 @ 0x70a9e0] 264 - core 130 r2282 1db4621 - H.264/MPEG-4 AVC
    
    codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html -
    
    options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7
    
    psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1
    
    8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2
    
    threads=1 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1
    
    interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2
    
    b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250
    
    keyint_min=5 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf
    
    mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.25
    
    aq=1:1.00
    
    Output #0, flv, to
    
    'rtmp:host/pass:
    
      Metadata:
    
        encoder         : Lavf54.20.4
    
        Stream #0.0: Video: libx264, yuv420p, 320x240, q=-1--1, 1k tbn, 5 tbc
    
    Stream mapping:
    
      Stream #0:0 -> #0:0 (rawvideo -> libx264)
    
    Press ctrl-c to stop encoding
    
    frame=   44 fps=  3 q=23.0 size=      26kB time=0.20
    
    bitrate=1071.8kbits/s    bits/s

    what could be the problem ?
    thank you in advanced

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