Recherche avancée

Médias (2)

Mot : - Tags -/media

Autres articles (82)

  • Amélioration de la version de base

    13 septembre 2013

    Jolie sélection multiple
    Le plugin Chosen permet d’améliorer l’ergonomie des champs de sélection multiple. Voir les deux images suivantes pour comparer.
    Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...)

  • Menus personnalisés

    14 novembre 2010, par

    MediaSPIP utilise le plugin Menus pour gérer plusieurs menus configurables pour la navigation.
    Cela permet de laisser aux administrateurs de canaux la possibilité de configurer finement ces menus.
    Menus créés à l’initialisation du site
    Par défaut trois menus sont créés automatiquement à l’initialisation du site : Le menu principal ; Identifiant : barrenav ; Ce menu s’insère en général en haut de la page après le bloc d’entête, son identifiant le rend compatible avec les squelettes basés sur Zpip ; (...)

  • Configuration spécifique pour PHP5

    4 février 2011, par

    PHP5 est obligatoire, vous pouvez l’installer en suivant ce tutoriel spécifique.
    Il est recommandé dans un premier temps de désactiver le safe_mode, cependant, s’il est correctement configuré et que les binaires nécessaires sont accessibles, MediaSPIP devrait fonctionner correctement avec le safe_mode activé.
    Modules spécifiques
    Il est nécessaire d’installer certains modules PHP spécifiques, via le gestionnaire de paquet de votre distribution ou manuellement : php5-mysql pour la connectivité avec la (...)

Sur d’autres sites (5319)

  • lavc/movtextenc : add alpha tag handling

    5 avril 2020, par John Stebbins
    lavc/movtextenc : add alpha tag handling

    Signed-off-by : Philip Langdale <philipl@overt.org>
    • [DH] libavcodec/movtextenc.c

  • lavc/movtextenc : handle changes to hilight alpha

    9 avril 2020, par John Stebbins
    lavc/movtextenc : handle changes to hilight alpha

    Signed-off-by : Philip Langdale <philipl@overt.org>
    • [DH] libavcodec/movtextenc.c

  • FFMPEG encode video with alpha channel to flv

    29 novembre 2017, par tree

    I’m trying to encode a video (mov) to an flv with alpha channel in FFMPEG but I can’t seem to either

    1. find a codec that is supported
    2. find one that actually maintains the alpha

    Does anyone know how to set that up ?

    Thanks,

    ffmpeg -i abc_btr_1280x800_Takeover.mov -vcodec flv -pix_fmt yuv444p -s 1280x800 test4.flv

    here is the report...

    ffmpeg started on 2013-10-25 at 15:47:30
    
Report written to "ffmpeg-20131025-154730.log"
    
Command line: 
    
ffmpeg -i abc_btr_1280x800_Takeover.mov -vcodec flv -pix_fmt yuv444p -s 1280x800     test4.flv -report
    
ffmpeg version N-57367-g2f31b73 Copyright (c) 2000-2013 the FFmpeg developers
    
  built on Oct 23 2013 20:34:17 with gcc 4.8.2 (GCC)
    
  configuration: --disable-static --enable-shared --enable-gpl --enable-version3 --    disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --    enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-    libfreetype --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --    enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
    
  libavutil      52. 47.101 / 52. 47.101
    
  libavcodec     55. 38.101 / 55. 38.101
    
  libavformat    55. 19.104 / 55. 19.104
    
  libavdevice    55.  4.100 / 55.  4.100
    
  libavfilter     3. 89.100 /  3. 89.100
    
  libswscale      2.  5.101 /  2.  5.101
    
  libswresample   0. 17.104 /  0. 17.104
    
  libpostproc    52.  3.100 / 52.  3.100
    
Splitting the commandline.
    
Reading option '-i' ... matched as input file with argument     'abc_btr_1280x800_Takeover.mov'.
    
Reading option '-vcodec' ... matched as option 'vcodec' (force video codec ('copy' to     copy stream)) with argument 'flv'.
    
Reading option '-pix_fmt' ... matched as option 'pix_fmt' (set pixel format) with argument 'yuv444p'.
    
Reading option '-s' ... matched as option 's' (set frame size (WxH or abbreviation)) with argument '1280x800'.
    
Reading option 'test4.flv' ... matched as output file.
    
Reading option '-report' ... matched as option 'report' (generate a report) with argument '1'.
    
Finished splitting the commandline.
    
Parsing a group of options: global .
    
Applying option report (generate a report) with argument 1.
    
Successfully parsed a group of options.
    
Parsing a group of options: input file abc_btr_1280x800_Takeover.mov.
    
Successfully parsed a group of options.
    
Opening an input file: abc_btr_1280x800_Takeover.mov.
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 000000000085ac00] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 000000000085ac00] ISO: File Type Major Brand: qt  
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 000000000085ac00] File position before avformat_find_stream_info() is 281624339
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 000000000085ac00] All info found
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 000000000085ac00] File position after avformat_find_stream_info() is 288732
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'abc_btr_1280x800_Takeover.mov':
    
  Metadata:
    
    major_brand     : qt  
    
    minor_version   : 537199360
    
    compatible_brands: qt  
    
    creation_time   : 2013-09-22 02:50:18
    
  Duration: 00:00:10.00, start: 0.000000, bitrate: 225299 kb/s
    
    Stream #0:0(eng), 1, 1/24: Video: qtrle (rle  / 0x20656C72), bgra, 1280x800, 225293 kb/s, SAR 1280:1280 DAR 8:5, 24 fps, 24 tbr, 24 tbn, 24 tbc (default)
    
    Metadata:
    
      creation_time   : 2013-09-22 02:50:18
    
      handler_name    : Apple Alias Data Handler
    
      timecode        : 00:00:00:00
    
    Stream #0:1(eng), 0, 1/24: Data: none (tmcd / 0x64636D74), 0 kb/s (default)
    
    Metadata:
    
      creation_time   : 2013-09-22 02:50:22
    
      handler_name    : Apple Alias Data Handler
    
      timecode        : 00:00:00:00
    
Successfully opened the file.
    
Parsing a group of options: output file test4.flv.
    
Applying option vcodec (force video codec ('copy' to copy stream)) with argument flv.
    
Applying option pix_fmt (set pixel format) with argument yuv444p.
    
Applying option s (set frame size (WxH or abbreviation)) with argument 1280x800.
    
Successfully parsed a group of options.
    
Opening an output file: test4.flv.
    
Successfully opened the file.
    
detected 4 logical cores
    
[graph 0 input from stream 0:0 @ 0000000000303bc0] Setting 'video_size' to value '1280x800'
    
[graph 0 input from stream 0:0 @ 0000000000303bc0] Setting 'pix_fmt' to value '30'
    
[graph 0 input from stream 0:0 @ 0000000000303bc0] Setting 'time_base' to value '1/24'
    
[graph 0 input from stream 0:0 @ 0000000000303bc0] Setting 'pixel_aspect' to value '1280/1280'
    
[graph 0 input from stream 0:0 @ 0000000000303bc0] Setting 'sws_param' to value 'flags=2'
    
[graph 0 input from stream 0:0 @ 0000000000303bc0] Setting 'frame_rate' to value '24/1'
    
[graph 0 input from stream 0:0 @ 0000000000303bc0] w:1280 h:800 pixfmt:bgra tb:1/24 fr:24/1 sar:1/1 sws_param:flags=2
    
[scaler for output stream 0:0 @ 00000000003056a0] Setting 'w' to value '1280'
    
[scaler for output stream 0:0 @ 00000000003056a0] Setting 'h' to value '800'
    
[scaler for output stream 0:0 @ 00000000003056a0] Setting 'flags' to value '0x4'
    
[scaler for output stream 0:0 @ 00000000003056a0] w:1280 h:800 flags:'0x4' interl:0
    
Incompatible pixel format 'yuv444p' for codec 'flv', auto-selecting format 'yuv420p'
    
[format @ 00000000002f8320] compat: called with args=[yuv420p]
    
[format @ 00000000002f8320] Setting 'pix_fmts' to value 'yuv420p'
    
[AVFilterGraph @ 000000000085bc60] query_formats: 5 queried, 4 merged, 0 already done, 0 delayed
    
[scaler for output stream 0:0 @ 00000000003056a0] w:1280 h:800 fmt:bgra sar:1/1 -> w:1280 h:800 fmt:yuv420p sar:1/1 flags:0x4
    
[flv @ 0000000000374be0] intra_quant_bias = 0 inter_quant_bias = -64
    
Output #0, flv, to 'test4.flv':
    
  Metadata:
    
    major_brand     : qt  
    
    minor_version   : 537199360
    
    compatible_brands: qt  
    
    encoder         : Lavf55.19.104
    
    Stream #0:0(eng), 0, 1/1000: Video: flv1 (flv) ([2][0][0][0] / 0x0002), yuv420p,             1280x800 [SAR 1:1 DAR 8:5], q=2-31, 200 kb/s, 1k tbn, 24 tbc (default)
    
    Metadata:
    
      creation_time   : 2013-09-22 02:50:18
    
          handler_name    : Apple Alias Data Handler
    
          timecode        : 00:00:00:00        
    
    Stream mapping:
    
      Stream #0:0 -> #0:0 (qtrle -> flv)
    
Press [q] to stop, [?] for help
    
frame=   27 fps=0.0 q=31.0 size=     351kB time=00:00:01.12 bitrate=2554.2kbits/s    
    
frame=   46 fps= 45 q=31.0 size=     477kB time=00:00:01.91 bitrate=2039.5kbits/s    
    
frame=   60 fps= 39 q=31.0 size=     543kB time=00:00:02.50 bitrate=1779.4kbits/s    
    
frame=   74 fps= 36 q=31.0 size=     629kB time=00:00:03.08 bitrate=1672.4kbits/s    
    
frame=   96 fps= 37 q=31.0 size=     795kB time=00:00:04.00 bitrate=1627.4kbits/s    
    
frame=  123 fps= 40 q=31.0 size=     924kB time=00:00:05.12 bitrate=1477.0kbits/s    
    
frame=  149 fps= 41 q=31.0 size=    1133kB time=00:00:06.20 bitrate=1494.7kbits/s    
    
frame=  175 fps= 43 q=31.0 size=    1224kB time=00:00:07.29 bitrate=1375.5kbits/s    
    
frame=  201 fps= 44 q=31.0 size=    1352kB time=00:00:08.37 bitrate=1322.7kbits/s    
    
frame=  228 fps= 45 q=31.0 size=    1461kB time=00:00:09.50 bitrate=1260.1kbits/s    
    
[output stream 0:0 @ 00000000003053c0] EOF on sink link output stream 0:0:default.
    
No more output streams to write to, finishing.
    
frame=  240 fps= 45 q=31.0 Lsize=    1600kB time=00:00:10.00 bitrate=1310.4kbits/s    
    

    
video:1596kB audio:0kB subtitle:0 global headers:0kB muxing overhead 0.252476%
    
240 frames successfully decoded, 0 decoding errors
    
[AVIOContext @ 000000000032dfc0] Statistics: 3 seeks, 242 writeouts
    
[AVIOContext @ 000000000085bde0] Statistics: 281664506 bytes read, 3 seeks

Navigation