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  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • Emballe médias : à quoi cela sert ?

    4 février 2011, par

    Ce plugin vise à gérer des sites de mise en ligne de documents de tous types.
    Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ;

  • 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 (...)

Sur d’autres sites (11486)

  • How do I fade out the edge of a video with ffmpeg ?

    11 décembre 2020, par Jared

    I have a transparent .mov and I want to "fade out" only one edge of the video into transparency using ffmpeg.

    


    My video is transparent 1000x1000 (black is transparent) :

    



    I am trying this command :

    


     ffmpeg -i movie.mov -b:v 700K -filter_complex "[0]split[v0][v1];[v0]format=yuva420p,geq=r=0:g=0:b=0:a=255*(Y/H),scale=w=1*iw:h=200[fg];[v1][fg]overlay=0:800:shortest=1" converted.mov


    


    This half works as the image has the gradient fade out but loses all transparency :

    



    What am I doing wrong ?

    


    Full output log of command :

    


    ffmpeg version 4.2.3 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 9.3.1 (GCC) 20200523
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'movie_014.mov':
  Metadata:
    major_brand     : qt
    minor_version   : 0
    compatible_brands: qt
    creation_time   : 2020-12-10T04:36:09.000000Z
  Duration: 00:00:10.03, start: 0.000000, bitrate: 142307 kb/s
    Stream #0:0(und): Video: prores (XQ) (ap4x / 0x78347061), yuva444p12le(tv, bt709, progressive), 1000x1000, 142222 kb/s, SAR 1:1 DAR 1:1, 30 fps, 30 tbr, 30k tbn, 30k tbc (default)
    Metadata:
      creation_time   : 2020-12-10T04:36:09.000000Z
      handler_name    : Core Media Video
      encoder         : Apple ProRes 4444 XQ
File 'converted.mov' already exists. Overwrite ? [y/N] y
Stream mapping:
  Stream #0:0 (prores) -> split
  overlay -> Stream #0:0 (libx264)
Press [q] to stop, [?] for help
[swscaler @ 0000019691457fc0] No accelerated colorspace conversion found from yuva420p to gbrap.
[libx264 @ 000001968c30f5c0] using SAR=1/1
[libx264 @ 000001968c30f5c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 000001968c30f5c0] profile High, level 3.2, 4:2:0, 8-bit
[libx264 @ 000001968c30f5c0] 264 - core 160 - H.264/MPEG-4 AVC codec - Copyleft 2003-2020 - 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=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=700 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mov, to 'converted.mov':
  Metadata:
    major_brand     : qt
    minor_version   : 0
    compatible_brands: qt
    encoder         : Lavf58.29.100
    Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 1000x1000 [SAR 1:1 DAR 1:1], q=-1--1, 700 kb/s, 30 fps, 15360 tbn, 30 tbc (default)
    Metadata:
      encoder         : Lavc58.54.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/700000 buffer size: 0 vbv_delay: -1
frame=  301 fps= 22 q=-1.0 Lsize=     843kB time=00:00:09.93 bitrate= 695.3kbits/s speed=0.716x
video:839kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.515537%
[libx264 @ 000001968c30f5c0] frame I:2     Avg QP:24.02  size: 22224
[libx264 @ 000001968c30f5c0] frame P:76    Avg QP:24.00  size:  6595
[libx264 @ 000001968c30f5c0] frame B:223   Avg QP:27.38  size:  1402
[libx264 @ 000001968c30f5c0] consecutive B-frames:  1.0%  0.7%  0.0% 98.3%
[libx264 @ 000001968c30f5c0] mb I  I16..4: 36.6% 56.1%  7.4%
[libx264 @ 000001968c30f5c0] mb P  I16..4:  0.5%  1.4%  0.2%  P16..4: 16.0%  7.4%  3.6%  0.0%  0.0%    skip:70.9%
[libx264 @ 000001968c30f5c0] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8: 18.7%  1.3%  0.1%  direct: 0.1%  skip:79.7%  L0:39.1% L1:58.3% BI: 2.6%
[libx264 @ 000001968c30f5c0] final ratefactor: 24.27
[libx264 @ 000001968c30f5c0] 8x8 transform intra:60.1% inter:78.0%
[libx264 @ 000001968c30f5c0] coded y,uvDC,uvAC intra: 30.9% 22.8% 8.2% inter: 3.7% 1.7% 0.0%
[libx264 @ 000001968c30f5c0] i16 v,h,dc,p: 65% 24%  4%  7%
[libx264 @ 000001968c30f5c0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 18% 16% 36%  4%  6%  7%  4%  5%  4%
[libx264 @ 000001968c30f5c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 24% 12% 23%  7%  9%  8%  6%  8%  5%
[libx264 @ 000001968c30f5c0] i8c dc,h,v,p: 79% 10%  9%  2%
[libx264 @ 000001968c30f5c0] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 000001968c30f5c0] ref P L0: 66.4% 21.6%  9.5%  2.6%
[libx264 @ 000001968c30f5c0] ref B L0: 92.1%  6.8%  1.1%
[libx264 @ 000001968c30f5c0] ref B L1: 97.6%  2.4%
[libx264 @ 000001968c30f5c0] kb/s:684.29


    


  • colorspace : Add support for BT709

    24 avril 2016, par Jan Ekström
    colorspace : Add support for BT709

    BT.709 coefficients were gathered from the first two parts of BT.709
    
to BT.2020 conversion guide in ARIB STD-B62 (Pt. 1, Chapter 6.2.2).
    
They were additionally confirmed by manually calculating values.
    • [DBH] libavutil/colorspace.h

  • doc/encoders : fix the misleading usage of profile

    20 juin 2020, par Limin Wang
    doc/encoders : fix the misleading usage of profile

    users are getting mislead by the integer, although profile
    
can support both const string and integer.
    
http://ffmpeg.org/pipermail/ffmpeg-user/2020-June/049025.html
    

    Also fix the order of high and main, it's not my intention.
    

    Signed-off-by : Limin Wang <lance.lmwang@gmail.com>
    • [DH] doc/encoders.texi

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