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  • Personnaliser les catégories

    21 juin 2013, par

    Formulaire de création d’une catégorie
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    Administration > Configuration des masques de formulaire.
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  • Les tâches Cron régulières de la ferme

    1er décembre 2010, par

    La gestion de la ferme passe par l’exécution à intervalle régulier de plusieurs tâches répétitives dites Cron.
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    Cette tâche, planifiée chaque minute, a pour simple effet d’appeler le Cron de l’ensemble des instances de la mutualisation régulièrement. Couplée avec un Cron système sur le site central de la mutualisation, cela permet de simplement générer des visites régulières sur les différents sites et éviter que les tâches des sites peu visités soient trop (...)

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
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Sur d’autres sites (9786)

  • Neutral net or neutered

    4 juin 2013, par Mans — Law and liberty

    In recent weeks, a number of high-profile events, in the UK and elsewhere, have been quickly seized upon to promote a variety of schemes for monitoring or filtering Internet access. These proposals, despite their good intentions of protecting children or fighting terrorism, pose a serious threat to fundamental liberties. Although … Continue reading →

  • Encoding 20MB flv video into mp4 aac using FFMPEG

    2 juin 2014, par Pus

    I have make a shell script for encoding flv video to mp4 video :

    shell_exec('/usr/local/bin/ffmpeg -y -i /destination/filename -c:a aac -strict -2 -b:a 128k -c:v libx264 -profile:v baseline -vf "movie=/img/logo.png [watermark];[in][watermark] overlay=10:10 [out]" /destination/filename.mp4 2>&1')

    I have issue while large size flv files, then it could not encode. In the case of 5 flv files with each 20MB could not encode. (I am trying to encode these 1 by one)

    Is there any fault in my script ?

  • How to convert first few seconds of a video to multiple output formats using ffmpeg

    5 juin 2012, par Hadi

    I want to convert first few seconds (say 5 seconds) of a video to multiple output formats using ffmpeg.

    when I Use this syntax to convert whole video, everything goes ok :
    (to be simple, i left all options to be default)

    ffmpeg -i input.flv output1.mp4 output2.avi

    but when trying for just first 5 seconds using this syntax :

    ffmpeg -t 5 -i input.flv output1.mp4 output2.avi

    first output file (i.e ouptput1.mp4) is ok and it is 5 seconds length, but the second (and next outputs, if present) has a size of original file.

    this is what ffmpeg prints out on the screen.

    D:\ffmpeg\bin>ffmpeg -t 5 -i input.flv output1.mp4 output2.avi
    
ffmpeg version N-40301-gc1fe2db Copyright (c) 2000-2012 the FFmpeg developers
    
  built on May  3 2012 11:40:38 with gcc 4.6.3
    
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-ru
    
ntime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-libass
    
 --enable-libcelt --enable-libopencore-amrnb --enable-libopencore-amrwb --enable
    
-libfreetype --enable-libgsm --enable-libmp3lame --enable-libnut --enable-libope
    
njpeg --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libth
    
eora --enable-libutvideo --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-
    
libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --e
    
nable-zlib
    
  libavutil      51. 49.100 / 51. 49.100
    
  libavcodec     54. 17.101 / 54. 17.101
    
  libavformat    54.  3.100 / 54.  3.100
    
  libavdevice    53.  4.100 / 53.  4.100
    
  libavfilter     2. 72.104 /  2. 72.104
    
  libswscale      2.  1.100 /  2.  1.100
    
  libswresample   0. 11.100 /  0. 11.100
    
  libpostproc    52.  0.100 / 52.  0.100
    
Input #0, flv, from 'input.flv':
    
  Duration: 00:00:37.00, start: 0.000000, bitrate: 366 kb/s
    
    Stream #0:0: Video: flv1, yuv420p, 320x240, 300 kb/s, 29.97 tbr, 1k tbn, 1k
    
tbc
    
    Stream #0:1: Audio: mp3, 22050 Hz, mono, s16, 56 kb/s
    
[buffer @ 01de98c0] w:320 h:240 pixfmt:yuv420p tb:1/1000000 sar:0/1 sws_param:fl
    
ags=2
    
[buffer @ 01dea4e0] w:320 h:240 pixfmt:yuv420p tb:1/1000000 sar:0/1 sws_param:fl
    
ags=2
    
[libx264 @ 02b067a0] using cpu capabilities: MMX2 Cache64
    
[libx264 @ 02b067a0] profile High, level 1.3
    
[libx264 @ 02b067a0] 264 - core 120 r2164 da19765 - H.264/MPEG-4 AVC codec - Cop
    
yleft 2003-2012 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deb
    
lock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 m
    
e_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chro
    
ma_qp_offset=-2 threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_c
    
ompat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 we
    
ightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 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=1.40 aq=1:1.00
    
Output #0, mp4, to 'output1.mp4':
    
  Metadata:
    
    encoder         : Lavf54.3.100
    
    Stream #0:0: Video: h264 (![0][0][0] / 0x0021), yuv420p, 320x240, q=-1--1, 3
    
0k tbn, 29.97 tbc
    
    Stream #0:1: Audio: aac (@[0][0][0] / 0x0040), 22050 Hz, mono, s16, 128 kb/s
    

    
Output #1, avi, to 'output2.avi':
    
  Metadata:
    
    ISFT            : Lavf54.3.100
    
    Stream #1:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 320x240, q=2-31, 200
    
 kb/s, 29.97 tbn, 29.97 tbc
    
    Stream #1:1: Audio: mp3 (U[0][0][0] / 0x0055), 22050 Hz, mono, s16
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (flv -> libx264)
    
  Stream #0:1 -> #0:1 (mp3 -> libvo_aacenc)
    
  Stream #0:0 -> #1:0 (flv -> mpeg4)
    
  Stream #0:1 -> #1:1 (mp3 -> libmp3lame)
    
Press [q] to stop, [?] for help
    
frame=   48 fps=0.0 q=29.0 q=2.4 size=       8kB time=00:00:00.16 bitrate= 399.6
    
frame=   62 fps= 59 q=29.0 q=2.4 size=      32kB time=00:00:00.63 bitrate= 408.8
    
frame=   73 fps= 46 q=29.0 q=3.5 size=      57kB time=00:00:01.00 bitrate= 466.1
    
frame=  104 fps= 50 q=29.0 q=3.5 size=      87kB time=00:00:02.03 bitrate= 349.7
    
frame=  134 fps= 52 q=29.0 q=3.6 size=     113kB time=00:00:03.03 bitrate= 303.9
    
***frame=  150 fps= 49 q=29.0 q=2.4 size=     126kB time=00:00:03.57 bitrate= 289.3
    
frame=  150 fps= 42 q=29.0 q=8.8 size=     126kB time=00:00:03.57 bitrate= 289.3
    
frame=  150 fps= 37 q=29.0 q=6.9 size=     126kB time=00:00:03.57 bitrate= 289.3
    
frame=  150 fps= 33 q=29.0 q=9.7 size=     126kB time=00:00:03.57 bitrate= 289.3
    
frame=  150 fps= 29 q=29.0 q=6.0 size=     126kB time=00:00:03.57 bitrate= 289.3
    
frame=  150 fps= 27 q=29.0 q=11.2 size=     126kB time=00:00:03.57 bitrate= 289.***
    
frame=  150 fps= 24 q=29.0 Lq=11.0 size=     171kB time=00:00:04.93 bitrate= 283
    
.7kbits/s
    
video:1282kB audio:225kB global headers:0kB muxing overhead -88.650217%
    
[libx264 @ 02b067a0] frame I:1     Avg QP:10.27  size:    74
    
[libx264 @ 02b067a0] frame P:114   Avg QP:23.49  size:   727
    
[libx264 @ 02b067a0] frame B:35    Avg QP:29.30  size:   124
    
[libx264 @ 02b067a0] consecutive B-frames: 68.0%  2.7%  0.0% 29.3%
    
[libx264 @ 02b067a0] mb I  I16..4: 100.0%  0.0%  0.0%
    
[libx264 @ 02b067a0] mb P  I16..4:  2.1%  3.2%  0.1%  P16..4: 19.2%  5.1%  3.6%
    
 0.0%  0.0%    skip:66.6%
    
[libx264 @ 02b067a0] mb B  I16..4:  0.2%  0.5%  0.0%  B16..8:  9.6%  1.2%  0.4%
    
 direct: 0.6%  skip:87.4%  L0:46.1% L1:42.5% BI:11.4%
    
[libx264 @ 02b067a0] 8x8 transform intra:51.7% inter:78.4%
    
[libx264 @ 02b067a0] coded y,uvDC,uvAC intra: 29.8% 44.5% 10.3% inter: 8.9% 10.3
    
% 2.2%
    
[libx264 @ 02b067a0] i16 v,h,dc,p: 52% 31% 16%  1%
    
[libx264 @ 02b067a0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 24% 25% 45%  1%  0%  1%  0%
    
 1%  3%
    
[libx264 @ 02b067a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 17% 48% 23%  2%  1%  2%  3%
    
 2%  1%
    
[libx264 @ 02b067a0] i8c dc,h,v,p: 54% 26% 16%  3%
    
[libx264 @ 02b067a0] Weighted P-Frames: Y:2.6% UV:0.9%
    
[libx264 @ 02b067a0] ref P L0: 79.8%  7.0%  9.6%  3.6%  0.0%
    
[libx264 @ 02b067a0] ref B L0: 92.5%  6.7%  0.8%
    
[libx264 @ 02b067a0] ref B L1: 96.8%  3.2%
    
[libx264 @ 02b067a0] kb/s:139.51
    

    
D:\ffmpeg\bin>

    How is the correct syntax to get all output files same size ?

    isn't this a bug with ffmpeg ? (note last lines of conversion progress, which all timestamps look same)

    thanks in advance.

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