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  • Installation en mode ferme

    4 février 2011, par

    Le mode ferme permet d’héberger plusieurs sites de type MediaSPIP en n’installant qu’une seule fois son noyau fonctionnel.
    C’est la méthode que nous utilisons sur cette même plateforme.
    L’utilisation en mode ferme nécessite de connaïtre un peu le mécanisme de SPIP contrairement à la version standalone qui ne nécessite pas réellement de connaissances spécifique puisque l’espace privé habituel de SPIP n’est plus utilisé.
    Dans un premier temps, vous devez avoir installé les mêmes fichiers que l’installation (...)

  • Les formats acceptés

    28 janvier 2010, par

    Les commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
    ffmpeg -codecs ffmpeg -formats
    Les format videos acceptés en entrée
    Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
    Les formats vidéos de sortie possibles
    Dans un premier temps on (...)

  • La sauvegarde automatique de canaux SPIP

    1er avril 2010, par

    Dans le cadre de la mise en place d’une plateforme ouverte, il est important pour les hébergeurs de pouvoir disposer de sauvegardes assez régulières pour parer à tout problème éventuel.
    Pour réaliser cette tâche on se base sur deux plugins SPIP : Saveauto qui permet une sauvegarde régulière de la base de donnée sous la forme d’un dump mysql (utilisable dans phpmyadmin) mes_fichiers_2 qui permet de réaliser une archive au format zip des données importantes du site (les documents, les éléments (...)

Sur d’autres sites (4228)

  • correctly escaping text in drawtext filter

    6 novembre 2013, par mente

    According to documentation %{}:, should be escaped with slash. But when I escape % the text is not added. There's error message saying Stray % near ')'. But what does it mean and how I can fix it ? Command and output :

    $ /usr/bin/ffmpeg -y -i /home/www/255871.mov -af 'aresample=async=1:min_hard_comp=0.100000' -vf 'scale=480:trunc(ow/a/2)*2,transpose=1 [in];movie=watermarks/text-box440.mov,scale=320:55 [bg];[in][bg] overlay=x=20:y=main_h-80,drawtext=fontsize=20:fix_bounds=1:fontfile=Helvetica\\:Style=bold:fontcolor=0xe6b300:text=small kitten \%\):x=30:y=h-80+ascent/2:draw=gte(t\,0)\;lt(t\,5) [out]' -pix_fmt yuv420p -r 24.39 -map_metadata -1 -movflags +faststart -f mp4 -vcodec libx264 -b:v 800k -maxrate 1100k -bufsize 2M -bt 256k -profile:vbaseline -acodec libfdk_aac -ab 64k -ar 44100 -ac 1 /tmp/kitten.mp4
    
ffmpeg version 1.2 Copyright (c) 2000-2013 the FFmpeg developers
    
  built on Mar 15 2013 18:40:14 with gcc 4.4.6 (GCC) 20120305 (Red Hat 4.4.6-4)
    
  configuration: --enable-gpl --enable-libmp3lame --enable-libvo-aacenc --enable-libx264 --enable-version3 --enable-pthreads --enable-libfaac --enable-nonfree --enable-libfdk_a
    
ac --enable-fontconfig --enable-libfreetype
    
  libavutil      52. 18.100 / 52. 18.100
    
  libavcodec     54. 92.100 / 54. 92.100
    
  libavformat    54. 63.104 / 54. 63.104
    
  libavdevice    54.  3.103 / 54.  3.103
    
  libavfilter     3. 42.103 /  3. 42.103
    
  libswscale      2.  2.100 /  2.  2.100
    
  libswresample   0. 17.102 /  0. 17.102
    
  libpostproc    52.  2.100 / 52.  2.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/www/255871.mov':
    
  Metadata:
    
    major_brand     : qt
    
    minor_version   : 0
    
    compatible_brands: qt
    
    creation_time   : 2012-07-17 07:42:35
    
    model           : iPhone 3GS
    
    model-rus       : iPhone 3GS
    
    encoder         : 4.2.1
    
    encoder-rus     : 4.2.1
    
    date            : 2012-07-17T10:42:35+0300
    
    date-rus        : 2012-07-17T10:42:35+0300
    
    make            : Apple
    
    make-rus        : Apple
    
  Duration: 00:00:09.38, start: 0.000000, bitrate: 790 kb/s
    
    Stream #0:0(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 480x360, 720 kb/s, 29.97 fps, 29.97 tbr, 600 tbn, 1200 tbc
    
    Metadata:
    
      rotate          : 90
    
      creation_time   : 2012-07-17 07:42:35
    
      handler_name    : Core Media Data Handler
    
    Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 63 kb/s
    
    Metadata:
    
      creation_time   : 2012-07-17 07:42:35
    
      handler_name    : Core Media Data Handler
    
[Parsed_drawtext_5 @ 0x2ae9b00] Using "/usr/share/fonts/default/Type1/n019003l.pfb"
    
[libx264 @ 0x2ae7d40] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    
[libx264 @ 0x2ae7d40] profile Constrained Baseline, level 2.1
    
[libx264 @ 0x2ae7d40] 264 - core 130 r2274 c832fe9 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=0 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=24 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=800 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=1100 vbv_bufsize=2000 nal_hrd=none ip_ratio=1.40 aq=1:1.00
    
Output #0, mp4, to '/tmp/kitten.mp4':
    
  Metadata:
    
    encoder         : Lavf54.63.104
    
    Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 360x480, q=-1--1, 800 kb/s, 19512 tbn, 24.39 tbc
    
    Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, mono, s16, 64 kb/s
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 -> libx264)
    
  Stream #0:1 -> #0:1 (aac -> libfdk_aac)
    
Press [q] to stop, [?] for help
    
[Parsed_drawtext_5 @ 0x2ae9b00] Stray % near ')'
    
    Last message repeated 201 times
    
Stray % near ')'0.0 q=27.0 size=     480kB time=00:00:07.96 bitrate= 493.4kbits/s dup=0 drop=35
    
[Parsed_drawtext_5 @ 0x2ae9b00] Stray % near ')'
    
    Last message repeated 77 times
    
Starting second pass: moving header on top of the file
    
frame=  231 fps=0.0 q=-1.0 Lsize=    1002kB time=00:00:09.47 bitrate= 866.6kbits/s dup=0 drop=50
    
video:921kB audio:74kB subtitle:0 global headers:0kB muxing overhead 0.680957%
    
[libx264 @ 0x2ae7d40] frame I:1     Avg QP:24.43  size: 13264
    
[libx264 @ 0x2ae7d40] frame P:230   Avg QP:23.72  size:  4041
    
[libx264 @ 0x2ae7d40] mb I  I16..4: 24.8%  0.0% 75.2%
    
[libx264 @ 0x2ae7d40] mb P  I16..4:  2.3%  0.0%  4.8%  P16..4: 34.4% 28.8%  9.4%  0.0%  0.0%    skip:20.3%
    
[libx264 @ 0x2ae7d40] coded y,uvDC,uvAC intra: 62.5% 54.2% 4.4% inter: 19.6% 20.3% 0.1%
    
[libx264 @ 0x2ae7d40] i16 v,h,dc,p: 36% 29% 19% 16%
    
[libx264 @ 0x2ae7d40] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19% 21% 20%  6%  8%  7%  7%  6%  6%
    
[libx264 @ 0x2ae7d40] i8c dc,h,v,p: 65% 15% 17%  3%
    
[libx264 @ 0x2ae7d40] ref P L0: 93.4%  4.3%  2.3%
    
[libx264 @ 0x2ae7d40] kb/s:796.32

  • Stacking different length videos not working with ffmpeg and -itsoffset

    3 avril 2019, par Lucas Madalozzo

    I developed a video conferencing app that records the video streams separately, and I am now looking for a way to merge them. At the moment I am experimenting with -itsoffset and hstack to stack 2 videos side by side using this command :

    ffmpeg \
    
-itsoffset 17 -i smaller.mp4 \
    
-itsoffset 0 -i bigger.mp4 \
    
-filter_complex hstack=inputs=2 \
    
-c:v libx264 -crf 23 out.mp4

    The result is a side by side video where both streams remain frozen for 17 seconds then start playing, even the bigger.mp4 video that should start at time 0.

    Any help would be really appreciated !

    ffmpeg verbose :

    ffmpeg version 4.1 Copyright (c) 2000-2018 the FFmpeg developers
    
  built with gcc 4.9.2 (Debian 4.9.2-10+deb8u1)
    
  configuration: --enable-gpl --enable-postproc --enable-swscale --enable-avfilter --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-libx264 --enable-libspeex --enab                                                                                                                                       le-shared --enable-pthreads --enable-libopenjpeg --enable-nonfree --enable-libopus --enable-libvorbis --enable-libvpx
    
  libavutil      56. 22.100 / 56. 22.100
    
  libavcodec     58. 35.100 / 58. 35.100
    
  libavformat    58. 20.100 / 58. 20.100
    
  libavdevice    58.  5.100 / 58.  5.100
    
  libavfilter     7. 40.101 /  7. 40.101
    
  libswscale      5.  3.100 /  5.  3.100
    
  libswresample   3.  3.100 /  3.  3.100
    
  libpostproc    55.  3.100 / 55.  3.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'smaller.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf58.20.100
    
  Duration: 00:00:05.16, start: 0.000000, bitrate: 444 kb/s
    
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 480x360 [SAR 1:1 DAR 4:3], 330 kb/s, 32 fps, 32 tbr, 16384 tbn, 64 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 103 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'bigger.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf56.36.100
    
  Duration: 00:00:22.03, start: 0.000000, bitrate: 290 kb/s
    
    Stream #1:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 480x360 [SAR 1:1 DAR 4:3], 177 kb/s, 32 fps, 32 tbr, 16384 tbn, 64 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #1:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 103 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
File 'out.mp4' already exists. Overwrite ? [y/N] y
    
Stream mapping:
    
  Stream #0:0 (h264) -> hstack:input0 (graph 0)
    
  Stream #1:0 (h264) -> hstack:input1 (graph 0)
    
  hstack (graph 0) -> Stream #0:0 (libx264)
    
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
    
Press [q] to stop, [?] for help
    
[libx264 @ 0x206ed00] using SAR=1/1
    
[libx264 @ 0x206ed00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
    
[libx264 @ 0x206ed00] profile High, level 3.1
    
[libx264 @ 0x206ed00] 264 - core 146 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - 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=3 lookahead_threads=1 sliced_thre                                                                                                                                       ads=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=25 scene                                                                                                                                       cut=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 'out.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf58.20.100
    
    Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 960x360 [SAR 1:1 DAR 8:3], q=-1--1, 32 fps, 16384 tbn, 32 tbc (default)
    
    Metadata:
    
      encoder         : Lavc58.35.100 libx264
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
      encoder         : Lavc58.35.100 aac
    
frame=  709 fps=130 q=-1.0 Lsize=     573kB time=00:00:22.12 bitrate= 212.2kbits/s dup=544 drop=0 speed=4.05x
    
video:478kB audio:81kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.445685%
    
[libx264 @ 0x206ed00] frame I:3     Avg QP:16.86  size: 38355
    
[libx264 @ 0x206ed00] frame P:190   Avg QP:18.22  size:  1633
    
[libx264 @ 0x206ed00] frame B:516   Avg QP:16.23  size:   123
    
[libx264 @ 0x206ed00] consecutive B-frames:  1.3%  2.8%  6.8% 89.1%
    
[libx264 @ 0x206ed00] mb I  I16..4:  6.6% 54.8% 38.6%
    
[libx264 @ 0x206ed00] mb P  I16..4:  0.4%  1.5%  0.2%  P16..4:  8.7%  4.0%  1.9%  0.0%  0.0%    skip:83.3%
    
[libx264 @ 0x206ed00] mb B  I16..4:  0.0%  0.1%  0.0%  B16..8:  4.2%  0.3%  0.0%  direct: 0.0%  skip:95.4%  L0:37.2% L1:58.9% BI: 4.0%
    
[libx264 @ 0x206ed00] 8x8 transform intra:66.2% inter:63.4%
    
[libx264 @ 0x206ed00] coded y,uvDC,uvAC intra: 66.1% 65.6% 21.6% inter: 1.7% 1.1% 0.0%
    
[libx264 @ 0x206ed00] i16 v,h,dc,p: 21% 26% 11% 42%
    
[libx264 @ 0x206ed00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 25% 23% 13%  5%  7%  8%  7%  7%  6%
    
[libx264 @ 0x206ed00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 28% 24%  9%  6%  7%  7%  6%  7%  7%
    
[libx264 @ 0x206ed00] i8c dc,h,v,p: 46% 25% 20%  9%
    
[libx264 @ 0x206ed00] Weighted P-Frames: Y:1.1% UV:0.0%
    
[libx264 @ 0x206ed00] ref P L0: 66.0% 19.4% 12.0%  2.6%  0.0%
    
[libx264 @ 0x206ed00] ref B L0: 87.2% 11.8%  1.0%
    
[libx264 @ 0x206ed00] ref B L1: 95.2%  4.8%
    
[libx264 @ 0x206ed00] kb/s:176.52
    
[aac @ 0x204aa00] Qavg: 247.398

  • ffmpeg Conversion issue with 3:2 aspect ratio

    5 mai 2015, par nurma

    Sometimes there is an issue when i try to convert to mp4 using ffmpeg. I’m getting issue "Error while opening encoder for output stream #0:1 - maybe incorrect parameters such as bit_rate, rate, width or height". Maybe, this is because of input video file, that has dimensions 720x480 with aspect ratio 3:2. Please help me, how to correctly convert this type of video.
    This is the command :

     ffmpeg -y -i input.mp4 -i watermark.png -filter_complex 'scale=-2:360,overlay=(main_w-overlay_w)-20:(main_h-overlay_h)-20' -codec:v libx264 -profile:v main -preset slow -b:v 300k -maxrate 300k -bufsize 600k -threads 0 -codec:a aac -strict experimental -b:a 128k -crf 20 output.mp4 1> output.log 2>&1

    Here the error log :

    ffmpeg version 2.4.3 Copyright (c) 2000-2014 the FFmpeg developers
    
      built on Nov 16 2014 22:36:57 with gcc 4.8.2 (GCC)
    
      configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/man --docdir=/usr/doc/ffmpeg-2.4.3 --enable-gpl --enable-version3 --enable-avfilter --enable-avresample --enable-libass --enable-libdc1394 --enable-libgsm --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libv4l2 --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libzvbi --enable-postproc --enable-runtime-cpudetect --enable-vaapi --enable-vdpau --enable-memalign-hack --enable-pthreads --enable-x11grab --enable-bzlib --enable-zlib --enable-shared --enable-static --disable-debug --arch=x86_64 --enable-pic --extra-cflags='-I/tmp/build/tmp-ffmpeg/ffmpegdeps/usr/include -DRUNTIME_CPUDETECT' --extra-ldflags='-L/tmp/build/tmp-ffmpeg/ffmpegdeps/usr/lib64 -ldl -lssl -lcrypto -lz -lusb' --pkg-config-flags=--static
    
      libavutil      54.  7.100 / 54.  7.100
    
      libavcodec     56.  1.100 / 56.  1.100
    
      libavformat    56.  4.101 / 56.  4.101
    
      libavdevice    56.  0.100 / 56.  0.100
    
      libavfilter     5.  1.100 /  5.  1.100
    
      libavresample   2.  1.  0 /  2.  1.  0
    
      libswscale      3.  0.100 /  3.  0.100
    
      libswresample   1.  1.100 /  1.  1.100
    
      libpostproc    53.  0.100 / 53.  0.100
    
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input.mp4':
    
      Metadata:
    
        major_brand     : isom
    
        minor_version   : 512
    
        compatible_brands: isomiso2avc1mp41
    
        encoder         : Lavf56.15.102
    
      Duration: 00:00:06.76, start: 0.000000, bitrate: 1856 kb/s
    
        Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 720x480, 1804 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
    
        Metadata:
    
          handler_name    : VideoHandler
    
        Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 16000 Hz, mono, fltp, 54 kb/s (default)
    
        Metadata:
    
          handler_name    : SoundHandler
    
    Input #1, png_pipe, from 'watermark.png':
    
      Duration: N/A, bitrate: N/A
    
        Stream #1:0: Video: png, rgba, 120x35, 25 tbr, 25 tbn, 25 tbc
    
    [libx264 @ 0x2179d80] using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64 SlowShuffle
    
    [libx264 @ 0x2179d80] profile Main, level 3.0
    
    [libx264 @ 0x2179d80] 264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=5 deblock=1:0:0 analyse=0x1:0x111 me=umh subme=8 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=3 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=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=50 rc=crf mbtree=1 crf=20.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=300 vbv_bufsize=600 crf_max=0.0 nal_hrd=none filler=0 ip_ratio=1.40 aq=1:1.00
    
    [aac @ 0x217ba40] Too many bits per frame requested
    
    Output #0, mp4, to 'output.mp4':
    
      Metadata:
    
        major_brand     : isom
    
        minor_version   : 512
    
        compatible_brands: isomiso2avc1mp41
    
        encoder         : Lavf56.15.102
    
        Stream #0:0: Video: h264 (libx264), yuv420p, 540x360, q=-1--1, 300 kb/s, 30 fps, 30 tbn, 30 tbc (default)
    
        Metadata:
    
          encoder         : Lavc56.1.100 libx264
    
        Stream #0:1(eng): Audio: aac, 0 channels, 128 kb/s (default)
    
        Metadata:
    
          handler_name    : SoundHandler
    
          encoder         : Lavc56.1.100 aac
    
    Stream mapping:
    
      Stream #0:0 (h264) -> scale (graph 0)
    
      Stream #1:0 (png) -> overlay:overlay (graph 0)
    
      overlay (graph 0) -> Stream #0:0 (libx264)
    
      Stream #0:1 -> #0:1 (aac (native) -> aac (native))
    
    Error while opening encoder for output stream #0:1 - maybe incorrect parameters such as bit_rate, rate, width or height

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