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  • Les images

    15 mai 2013

  • Mediabox : ouvrir les images dans l’espace maximal pour l’utilisateur

    8 février 2011, par

    La visualisation des images est restreinte par la largeur accordée par le design du site (dépendant du thème utilisé). Elles sont donc visibles sous un format réduit. Afin de profiter de l’ensemble de la place disponible sur l’écran de l’utilisateur, il est possible d’ajouter une fonctionnalité d’affichage de l’image dans une boite multimedia apparaissant au dessus du reste du contenu.
    Pour ce faire il est nécessaire d’installer le plugin "Mediabox".
    Configuration de la boite multimédia
    Dès (...)

  • Publier sur MédiaSpip

    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
    Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir

Sur d’autres sites (7936)

  • How to specify the audio path for ffmpeg and how to conduct a silence removal using ffmpeg

    15 octobre 2020, par Leo

    I wish to conduct a silence removal for wav files.

    


    import ffmpeg
inPath = "/home/test/Speech/Wang/dataset/testsets/disgust/0_002_00_021_F002_d.wav"
outPath = "/home/test/Speech/Wang/dataset/testsets/disgust/0_002_00_021_F002_d_trimed.wav"
ffmpeg -i inPath -af silenceremove=0:0:-50dB outPath


    


    Error occurred.

    


      File "", line 3
    ffmpeg -i inPath -af silenceremove=0:0:-50dB outPath
                   ^
SyntaxError: invalid syntax


    


    How should I assign the path ?

    


    The question is that why we set the threshold to a negative value ?

    


  • ffmpeg drops all frames after 6 seconds

    25 juin 2014, par user2099107

    New to FFMPEG, I’m trying to create a video from a set of png.

    I have 96 png and I’m looking to 4 FPS (24 seconds of video)

    I use the following command :

    /Applications/ffmpeg -y -r 4 -pattern_type glob -i './images/*.png' -c:v libx264 -pix_fmt yuv420p out.mp4

    my out.mp4 always commes out as roughly 6 seconds with 24 frames, the last 70 frames being dropped.

    here is the full output :

        ffmpeg version 2.2.3-tessus Copyright (c) 2000-2014 the FFmpeg developers
    
  built on Jun  4 2014 21:31:51 with clang version 3.3 (tags/RELEASE_33/final)
    
  configuration: --cc=/opt/local/bin/clang-mp-3.3 --prefix=/Users/tessus/data/ext/ffmpeg/sw --as=yasm --extra-version=tessus --disable-shared --enable-static --disable-ffplay --enable-gpl --enable-pthreads --enable-postproc --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libx265 --enable-libxvid --enable-libspeex --enable-bzlib --enable-zlib --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libxavs --enable-version3 --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvpx --enable-libgsm --enable-libopus --enable-libmodplug --enable-fontconfig --enable-libfreetype --enable-libass --enable-libbluray --enable-filters --disable-indev=qtkit --enable-runtime-cpudetect
    
  libavutil      52. 66.100 / 52. 66.100
    
  libavcodec     55. 52.102 / 55. 52.102
    
  libavformat    55. 33.100 / 55. 33.100
    
  libavdevice    55. 10.100 / 55. 10.100
    
  libavfilter     4.  2.100 /  4.  2.100
    
  libswscale      2.  5.102 /  2.  5.102
    
  libswresample   0. 18.100 /  0. 18.100
    
  libpostproc    52.  3.100 / 52.  3.100
    
Input #0, image2, from './images/*.png':
    
  Duration: 00:00:03.84, start: 0.000000, bitrate: N/A
    
    Stream #0:0: Video: png, rgba, 1280x1024, 25 fps, 25 tbr, 25 tbn, 25 tbc
    
[libx264 @ 0x103000600] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    
[libx264 @ 0x103000600] profile High, level 3.2
    
[libx264 @ 0x103000600] 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=12 lookahead_threads=2 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=4 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 '/Users/adrien/code/encoding/out.mp4':
    
  Metadata:
    
    encoder         : Lavf55.33.100
    
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x1024, q=-1--1, 16384 tbn, 4 tbc
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (png -> libx264)
    
Press [q] to stop, [?] for help
    
Input stream #0:0 frame changed from size:1280x1024 fmt:rgba to size:1280x1024 fmt:rgb24
    
Input stream #0:0 frame changed from size:1280x1024 fmt:rgb24 to size:1280x1024 fmt:rgba
    
Input stream #0:0 frame changed from size:1280x1024 fmt:rgba to size:1280x1024 fmt:rgb24
    
Input stream #0:0 frame changed from size:1280x1024 fmt:rgb24 to size:1280x1024 fmt:rgba
    
Input stream #0:0 frame changed from size:1280x1024 fmt:rgba to size:1280x1024 fmt:rgb24
    
Input stream #0:0 frame changed from size:1280x1024 fmt:rgb24 to size:1280x1024 fmt:rgba
    
Input stream #0:0 frame changed from size:1280x1024 fmt:rgba to size:1280x1024 fmt:rgb24
    
frame=   26 fps= 21 q=-1.0 Lsize=     165kB time=00:00:06.00 bitrate= 224.9kbits/s dup=0 drop=70    
    
video:164kB audio:0kB subtitle:0 data:0 global headers:0kB muxing overhead 0.661924%
    
[libx264 @ 0x103000600] frame I:1     Avg QP: 9.66  size:100467
    
[libx264 @ 0x103000600] frame P:8     Avg QP:14.08  size:  7610
    
[libx264 @ 0x103000600] frame B:17    Avg QP:18.26  size:   322
    
[libx264 @ 0x103000600] consecutive B-frames: 11.5%  0.0% 11.5% 76.9%
    
[libx264 @ 0x103000600] mb I  I16..4: 23.4% 49.5% 27.1%
    
[libx264 @ 0x103000600] mb P  I16..4:  3.6%  3.7%  1.3%  P16..4:  1.0%  0.1%  0.2%  0.0%  0.0%    skip:90.1%
    
[libx264 @ 0x103000600] mb B  I16..4:  0.1%  0.0%  0.1%  B16..8:  1.3%  0.0%  0.0%  direct: 0.0%  skip:98.4%  L0:46.1% L1:53.9% BI: 0.0%
    
[libx264 @ 0x103000600] 8x8 transform intra:45.8% inter:25.7%
    
[libx264 @ 0x103000600] coded y,uvDC,uvAC intra: 46.0% 62.8% 42.9% inter: 0.1% 0.2% 0.1%
    
[libx264 @ 0x103000600] i16 v,h,dc,p: 58% 25% 15%  2%
    
[libx264 @ 0x103000600] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 44% 22% 24%  3%  1%  1%  3%  1%  1%
    
[libx264 @ 0x103000600] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 48% 20% 12%  3%  3%  4%  3%  3%  3%
    
[libx264 @ 0x103000600] i8c dc,h,v,p: 49% 20% 28%  3%
    
[libx264 @ 0x103000600] Weighted P-Frames: Y:0.0% UV:0.0%
    
[libx264 @ 0x103000600] ref P L0: 86.0%  5.3%  7.2%  1.5%
    
[libx264 @ 0x103000600] ref B L0: 61.7% 35.8%  2.5%
    
[libx264 @ 0x103000600] ref B L1: 95.8%  4.2%
    
[libx264 @ 0x103000600] kb/s:205.33

  • sndio : Coalesce source files after outdev removal

    27 septembre 2017, par Diego Biurrun
    sndio : Coalesce source files after outdev removal
    • [DBH] libavdevice/Makefile
    • [DBH] libavdevice/sndio.c
    • [DBH] libavdevice/sndio.h

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