Recherche avancée

Médias (91)

Autres articles (60)

  • Gestion des droits de création et d’édition des objets

    8 février 2011, par

    Par défaut, beaucoup de fonctionnalités sont limitées aux administrateurs mais restent configurables indépendamment pour modifier leur statut minimal d’utilisation notamment : la rédaction de contenus sur le site modifiables dans la gestion des templates de formulaires ; l’ajout de notes aux articles ; l’ajout de légendes et d’annotations sur les images ;

  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

  • Dépôt de média et thèmes par FTP

    31 mai 2013, par

    L’outil MédiaSPIP traite aussi les média transférés par la voie FTP. Si vous préférez déposer par cette voie, récupérez les identifiants d’accès vers votre site MédiaSPIP et utilisez votre client FTP favori.
    Vous trouverez dès le départ les dossiers suivants dans votre espace FTP : config/ : dossier de configuration du site IMG/ : dossier des média déjà traités et en ligne sur le site local/ : répertoire cache du site web themes/ : les thèmes ou les feuilles de style personnalisées tmp/ : dossier de travail (...)

Sur d’autres sites (9084)

  • Re-sampling H264 video to reduce frame rate while maintaining high image quality

    4 mars 2019, par BrianTheLion

    Here’s the mplayer output for a video of interest :

    br@carina:/tmp$ mplayer foo.mov 
    
mplayer: Symbol `ff_codec_bmp_tags' has different size in shared object, consider re-linking
    
MPlayer 1.0rc4-4.5.2 (C) 2000-2010 MPlayer Team
    
mplayer: could not connect to socket
    
mplayer: No such file or directory
    
Failed to open LIRC support. You will not be able to use your remote control.
    

    
Playing foo.mov.
    
libavformat file format detected.
    
[lavf] stream 0: video (h264), -vid 0
    
[lavf] stream 1: audio (aac), -aid 0, -alang eng
    
VIDEO:  [H264]  1280x720  24bpp  59.940 fps  2494.2 kbps (304.5 kbyte/s)
    
==========================================================================
    
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
    
Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264)
    
==========================================================================
    
==========================================================================
    
Opening audio decoder: [faad] AAC (MPEG2/4 Advanced Audio Coding)
    
AUDIO: 44100 Hz, 2 ch, s16le, 128.0 kbit/9.07% (ratio: 15999->176400)
    
Selected audio codec: [faad] afm: faad (FAAD AAC (MPEG-2/MPEG-4 Audio))
    
==========================================================================
    
AO: [pulse] 44100Hz 2ch s16le (2 bytes per sample)
    
Starting playback...
    
Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
    
VO: [vdpau] 1280x720 => 1280x720 Planar YV12

    I’d like to use ffmpeg, mencoder, or some other command-line video transcoder to re-sample this video to a lower framerate without loss of image quality. That is, each frame should remain as crisp as possible.

    Attempts

    ffmpeg -i foo.mov -r 25 -vcodec copy bar.mov
    • The target frame rate — 25fps — is achieved but individual frames are "blocky."
    mencoder -nosound -ovc copy foo.mov -ofps 25 -o bar.mov
    • Videos are effectively un-viewable.

    Help !

    This seems like a simple enough use case. I’m very surprised that obvious things are not working. Is there something wrong with my approach ?

  • Re-sampling H264 video to reduce frame rate while maintaining high image quality

    31 mars 2016, par BrianTheLion

    Here’s the mplayer output for a video of interest :

    br@carina:/tmp$ mplayer foo.mov 
    
mplayer: Symbol `ff_codec_bmp_tags' has different size in shared object, consider re-linking
    
MPlayer 1.0rc4-4.5.2 (C) 2000-2010 MPlayer Team
    
mplayer: could not connect to socket
    
mplayer: No such file or directory
    
Failed to open LIRC support. You will not be able to use your remote control.
    

    
Playing foo.mov.
    
libavformat file format detected.
    
[lavf] stream 0: video (h264), -vid 0
    
[lavf] stream 1: audio (aac), -aid 0, -alang eng
    
VIDEO:  [H264]  1280x720  24bpp  59.940 fps  2494.2 kbps (304.5 kbyte/s)
    
==========================================================================
    
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
    
Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264)
    
==========================================================================
    
==========================================================================
    
Opening audio decoder: [faad] AAC (MPEG2/4 Advanced Audio Coding)
    
AUDIO: 44100 Hz, 2 ch, s16le, 128.0 kbit/9.07% (ratio: 15999->176400)
    
Selected audio codec: [faad] afm: faad (FAAD AAC (MPEG-2/MPEG-4 Audio))
    
==========================================================================
    
AO: [pulse] 44100Hz 2ch s16le (2 bytes per sample)
    
Starting playback...
    
Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
    
VO: [vdpau] 1280x720 => 1280x720 Planar YV12

    I’d like to use ffmpeg, mencoder, or some other command-line video transcoder to re-sample this video to a lower framerate without loss of image quality. That is, each frame should remain as crisp as possible.

    Attempts

    ffmpeg -i foo.mov -r 25 -vcodec copy bar.mov
    • The target frame rate — 25fps — is achieved but individual frames are "blocky."
    mencoder -nosound -ovc copy foo.mov -ofps 25 -o bar.mov
    • Videos are effectively un-viewable.

    Help !

    This seems like a simple enough use case. I’m very surprised that obvious things are not working. Is there something wrong with my approach ?

  • fate/pixfmts : extend the high bit depth test

    2 novembre 2024, par James Almer
    fate/pixfmts : extend the high bit depth test

    Also test 8bit formats, and try bitdepth conversion paths.
    

    Signed-off-by : James Almer <jamrial@gmail.com>
    • [DH] libswscale/utils.c
    • [DH] tests/fate-run.sh
    • [DH] tests/fate/pixfmt.mak
    • [DH] tests/ref/pixfmt/gbrp-bgr24
    • [DH] tests/ref/pixfmt/gbrp-gbrp10be
    • [DH] tests/ref/pixfmt/gbrp-gbrp10le
    • [DH] tests/ref/pixfmt/gbrp-gbrp12be
    • [DH] tests/ref/pixfmt/gbrp-gbrp12le
    • [DH] tests/ref/pixfmt/gbrp-gbrp16be
    • [DH] tests/ref/pixfmt/gbrp-gbrp16le
    • [DH] tests/ref/pixfmt/gbrp-gray
    • [DH] tests/ref/pixfmt/gbrp-gray10be
    • [DH] tests/ref/pixfmt/gbrp-gray10le
    • [DH] tests/ref/pixfmt/gbrp-gray12be
    • [DH] tests/ref/pixfmt/gbrp-gray12le
    • [DH] tests/ref/pixfmt/gbrp-gray16be
    • [DH] tests/ref/pixfmt/gbrp-gray16le
    • [DH] tests/ref/pixfmt/gbrp-monob
    • [DH] tests/ref/pixfmt/gbrp-monow
    • [DH] tests/ref/pixfmt/gbrp-nv12
    • [DH] tests/ref/pixfmt/gbrp-nv16
    • [DH] tests/ref/pixfmt/gbrp-nv24
    • [DH] tests/ref/pixfmt/gbrp-p010be
    • [DH] tests/ref/pixfmt/gbrp-p010le
    • [DH] tests/ref/pixfmt/gbrp-p012be
    • [DH] tests/ref/pixfmt/gbrp-p012le
    • [DH] tests/ref/pixfmt/gbrp-p016be
    • [DH] tests/ref/pixfmt/gbrp-p016le
    • [DH] tests/ref/pixfmt/gbrp-p210be
    • [DH] tests/ref/pixfmt/gbrp-p210le
    • [DH] tests/ref/pixfmt/gbrp-p212be
    • [DH] tests/ref/pixfmt/gbrp-p212le
    • [DH] tests/ref/pixfmt/gbrp-p216be
    • [DH] tests/ref/pixfmt/gbrp-p216le
    • [DH] tests/ref/pixfmt/gbrp-p410be
    • [DH] tests/ref/pixfmt/gbrp-p410le
    • [DH] tests/ref/pixfmt/gbrp-p412be
    • [DH] tests/ref/pixfmt/gbrp-p412le
    • [DH] tests/ref/pixfmt/gbrp-p416be
    • [DH] tests/ref/pixfmt/gbrp-p416le
    • [DH] tests/ref/pixfmt/gbrp-rgb24
    • [DH] tests/ref/pixfmt/gbrp-rgb32
    • [DH] tests/ref/pixfmt/gbrp-rgb48
    • [DH] tests/ref/pixfmt/gbrp-rgb555
    • [DH] tests/ref/pixfmt/gbrp-rgb565
    • [DH] tests/ref/pixfmt/gbrp-uyvy422
    • [DH] tests/ref/pixfmt/gbrp-v30xle
    • [DH] tests/ref/pixfmt/gbrp-vuyx
    • [DH] tests/ref/pixfmt/gbrp-vyu444
    • [DH] tests/ref/pixfmt/gbrp-x2bgr10le
    • [DH] tests/ref/pixfmt/gbrp-x2rgb10le
    • [DH] tests/ref/pixfmt/gbrp-xv30le
    • [DH] tests/ref/pixfmt/gbrp-xv36be
    • [DH] tests/ref/pixfmt/gbrp-xv36le
    • [DH] tests/ref/pixfmt/gbrp-xv48be
    • [DH] tests/ref/pixfmt/gbrp-xv48le
    • [DH] tests/ref/pixfmt/gbrp-xyz12le
    • [DH] tests/ref/pixfmt/gbrp-y210le
    • [DH] tests/ref/pixfmt/gbrp-y212le
    • [DH] tests/ref/pixfmt/gbrp-y216le
    • [DH] tests/ref/pixfmt/gbrp-yuv410p
    • [DH] tests/ref/pixfmt/gbrp-yuv411p
    • [DH] tests/ref/pixfmt/gbrp-yuv420p
    • [DH] tests/ref/pixfmt/gbrp-yuv420p10be
    • [DH] tests/ref/pixfmt/gbrp-yuv420p10le
    • [DH] tests/ref/pixfmt/gbrp-yuv420p12be
    • [DH] tests/ref/pixfmt/gbrp-yuv420p12le
    • [DH] tests/ref/pixfmt/gbrp-yuv420p16be
    • [DH] tests/ref/pixfmt/gbrp-yuv420p16le
    • [DH] tests/ref/pixfmt/gbrp-yuv422p
    • [DH] tests/ref/pixfmt/gbrp-yuv422p10be
    • [DH] tests/ref/pixfmt/gbrp-yuv422p10le
    • [DH] tests/ref/pixfmt/gbrp-yuv422p12be
    • [DH] tests/ref/pixfmt/gbrp-yuv422p12le
    • [DH] tests/ref/pixfmt/gbrp-yuv422p16be
    • [DH] tests/ref/pixfmt/gbrp-yuv422p16le
    • [DH] tests/ref/pixfmt/gbrp-yuv440p
    • [DH] tests/ref/pixfmt/gbrp-yuv440p10be
    • [DH] tests/ref/pixfmt/gbrp-yuv440p10le
    • [DH] tests/ref/pixfmt/gbrp-yuv440p12be
    • [DH] tests/ref/pixfmt/gbrp-yuv440p12le
    • [DH] tests/ref/pixfmt/gbrp-yuv444p
    • [DH] tests/ref/pixfmt/gbrp-yuv444p10be
    • [DH] tests/ref/pixfmt/gbrp-yuv444p10le
    • [DH] tests/ref/pixfmt/gbrp-yuv444p12be
    • [DH] tests/ref/pixfmt/gbrp-yuv444p12le
    • [DH] tests/ref/pixfmt/gbrp-yuv444p16be
    • [DH] tests/ref/pixfmt/gbrp-yuv444p16le
    • [DH] tests/ref/pixfmt/gbrp-yuvj420p
    • [DH] tests/ref/pixfmt/gbrp-yuvj422p
    • [DH] tests/ref/pixfmt/gbrp-yuvj440p
    • [DH] tests/ref/pixfmt/gbrp-yuvj444p
    • [DH] tests/ref/pixfmt/gbrp-yuyv422
    • [DH] tests/ref/pixfmt/gbrp-yvyu422
    • [DH] tests/ref/pixfmt/gbrp10-bgr24
    • [DH] tests/ref/pixfmt/gbrp10-gbrp12be
    • [DH] tests/ref/pixfmt/gbrp10-gbrp12le
    • [DH] tests/ref/pixfmt/gbrp10-gbrp16be
    • [DH] tests/ref/pixfmt/gbrp10-gbrp16le
    • [DH] tests/ref/pixfmt/gbrp10-gray
    • [DH] tests/ref/pixfmt/gbrp10-gray12be
    • [DH] tests/ref/pixfmt/gbrp10-gray12le
    • [DH] tests/ref/pixfmt/gbrp10-gray16be
    • [DH] tests/ref/pixfmt/gbrp10-gray16le
    • [DH] tests/ref/pixfmt/gbrp10-monob
    • [DH] tests/ref/pixfmt/gbrp10-monow
    • [DH] tests/ref/pixfmt/gbrp10-nv12
    • [DH] tests/ref/pixfmt/gbrp10-nv16
    • [DH] tests/ref/pixfmt/gbrp10-nv24
    • [DH] tests/ref/pixfmt/gbrp10-p012be
    • [DH] tests/ref/pixfmt/gbrp10-p012le
    • [DH] tests/ref/pixfmt/gbrp10-p016be
    • [DH] tests/ref/pixfmt/gbrp10-p016le
    • [DH] tests/ref/pixfmt/gbrp10-p212be
    • [DH] tests/ref/pixfmt/gbrp10-p212le
    • [DH] tests/ref/pixfmt/gbrp10-p216be
    • [DH] tests/ref/pixfmt/gbrp10-p216le
    • [DH] tests/ref/pixfmt/gbrp10-p412be
    • [DH] tests/ref/pixfmt/gbrp10-p412le
    • [DH] tests/ref/pixfmt/gbrp10-p416be
    • [DH] tests/ref/pixfmt/gbrp10-p416le
    • [DH] tests/ref/pixfmt/gbrp10-rgb24
    • [DH] tests/ref/pixfmt/gbrp10-rgb32
    • [DH] tests/ref/pixfmt/gbrp10-rgb48
    • [DH] tests/ref/pixfmt/gbrp10-rgb555
    • [DH] tests/ref/pixfmt/gbrp10-rgb565
    • [D

Navigation