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  • (Dés)Activation de fonctionnalités (plugins)

    18 février 2011, par

    Pour gérer l’ajout et la suppression de fonctionnalités supplémentaires (ou plugins), MediaSPIP utilise à partir de la version 0.2 SVP.
    SVP permet l’activation facile de plugins depuis l’espace de configuration de MediaSPIP.
    Pour y accéder, il suffit de se rendre dans l’espace de configuration puis de se rendre sur la page "Gestion des plugins".
    MediaSPIP est fourni par défaut avec l’ensemble des plugins dits "compatibles", ils ont été testés et intégrés afin de fonctionner parfaitement avec chaque (...)

  • Le plugin : Podcasts.

    14 juillet 2010, par

    Le problème du podcasting est à nouveau un problème révélateur de la normalisation des transports de données sur Internet.
    Deux formats intéressants existent : Celui développé par Apple, très axé sur l’utilisation d’iTunes dont la SPEC est ici ; Le format "Media RSS Module" qui est plus "libre" notamment soutenu par Yahoo et le logiciel Miro ;
    Types de fichiers supportés dans les flux
    Le format d’Apple n’autorise que les formats suivants dans ses flux : .mp3 audio/mpeg .m4a audio/x-m4a .mp4 (...)

  • Support audio et vidéo HTML5

    10 avril 2011

    MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
    Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
    Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
    Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...)

Sur d’autres sites (8024)

  • 2011 In Open Source Multimedia

    5 janvier 2012, par Multimedia Mike — Open Source Multimedia

    Sometimes I think that the pace of multimedia technology is slowing down. Obviously, I’m not paying close enough attention. I thought I would do a little 2011 year-end review of what happened in the world of open source multimedia, mainly for my own benefit. Let me know in the comments what I missed.

    The Split
    The biggest deal in open source multimedia was the matter of the project split. Where once stood one project (FFmpeg) there now stands two (also Libav). Where do things stand with the projects now ? Still very separate but similar. Both projects obsessively monitor each other’s git commits and prodigiously poach each other’s work, both projects being LGPL and all. Most features that land in one code base end up in the other. Thus, I refer to FFmpeg and Libav collectively as “the projects”.

    Some philosophical reasons for the split included project stagnation and development process friction. Curiously, these problems are fond memories now and the spirit of competition has pushed development forward at a blinding pace.

    People inside the project have strong opinions about the split ; that’s understandable. People outside the project have strong opinions about the split ; that’s somewhat less understandable, but whatever. After 5 years of working for Adobe on the Flash Player (a.k.a. the most hated software in all existence if internet nerds are to be believed on the matter), I’m so over internet nerd drama.

    For my part, I just try to maintain some appearance of neutrality since I manage some shared resources for the open source multimedia community (like the wiki and samples repo) and am trying to keep them from fracturing as well.

    Apple and Open Source
    It was big news that Apple magnanimously open sourced their lossless audio codec. That sets a great example and precedent.

    New Features
    I mined the 'git log' of the projects in order to pick out some features that were added during 2011.

    First off, Apple’s ProRes video codec was reverse engineered and incorporated into the multimedia libraries. And for some weird reason, this is an item that made the rounds in the geek press. I’m not entirely sure why, but it may have something to do with inter-project conflict. Anyway, here is the decoder in action, playing a video of some wild swine, one of the few samples we have :



    Other new video codecs included a reverse engineered Indeo 4 decoder. Gotta catch ‘em all ! That completes our collection of Indeo codecs. But that wasn’t enough– this year, we got a completely revised Indeo 3 decoder (the previous one, while functional, exhibited a lot of code artifacts betraying a direct ASM ->C translation). Oh, and many thanks to Kostya for this gem :



    That’s the new Origin Xan decoder (best known for Wing Commander IV cinematics) in action, something I first started reverse engineering back in 2002. Thanks to Kostya for picking up my slack yet again.

    Continuing with the codec section, there is a decoder for Adobe Flash Screen Video 2 — big congrats on this ! One of my jobs at Adobe was documenting this format to the outside world and I was afraid I could never quite make it clear enough to build a complete re-implementation. But the team came through.

    Let’s see, there are decoders for VBLE video, Ut Video, Windows Media Image (WMVP/WMP2), Bink audio version ‘b’, H.264 4:2:2 intra frames, and MxPEG video. There is a DPX image encoder, a Cirrus Logic AccuPak video encoder, and a v410 codec.

    How about some more game stuff ? The projects saw — at long last — an SMJPEG demuxer. This will finally allow usage and testing of the SMJPEG IMA ADPCM audio decoder I added about a decade ago. Funny story behind that– I was porting all of my decoders from xine which included the SMJPEG ADPCM. I just never quite got around to writing a corresponding demuxer. Thanks to Paul Mahol for taking care of that.

    Here’s a DFA playback system for a 1995 DOS CD-ROM title called Chronomaster. No format is too obscure, nor its encoded contents too cheesy :



    There’s now a demuxer for a format called XMV that was (is ?) prevalent on Xbox titles. Now the projects can handle FMV files from many Xbox games, such as Thrillville.



    The projects also gained the ability to play BMV files. I think this surfing wizard comes from Discworld II. It’s non-computer-generated animation at a strange resolution.



    More demuxers : xWMA, PlayStation Portable PMP format, and CRI ADX format ; muxer for OpenMG audio and LATM muxer/demuxer.

    One more thing : an AVX-optimized fast Fourier transform (FFT). If you have a machine that supports AVX, there’s no way you’ll even notice the speed increase of a few measly FFT calls for audio coding/decoding, but that’s hardly the point. The projects always use everything on offer for any CPU.

    Please make me aware of features that I missed in the list !

    Continuous Testing
    As a result of the split, each project has its own FATE server, one for FFmpeg and one for Libav. As of the new year, FFmpeg has just over 1000 tests while Libav had 965. This is one area where I’m obviously ecstatic to see competition. Some ad-hoc measurements on my part indicate that the total code coverage via the FATEs has not appreciably increased. But that’s a total percentage. Both the test count and the code count have been steadily rising.

    Google Summer of Code and Google Code-In
    Once again, the projects were allowed to participate in the Google Summer of Code as well as Google Code-In. I confess that I didn’t keep up with these too carefully (and Code-In is still in progress as of this writing). I do know that the project split occurred after FFmpeg had already been accepted for GSoC season 2011 and the admins were gracious enough to allow FFmpeg and Libav to allow both projects to participate in the same slot as long as they could both be mature about it.

    Happy New Year
    Let’s see what we can accomplish in 2012.

  • Decrypting .m3u8 AES 128 .drm file and IV

    26 septembre 2016, par Kishan

    Am trying to get the following video for offline viewing since my connection recently has been flakey.

    I’ve tried ffmpeg with the .m3u8 file but it says "invalid data" as the files are encrypted, I’ve been trying to read up on how to do it but can’t seem to find my exact scenario with this .drm file, everywhere they have the .key file. I’ve tried downloading each .ts and joining them which is fine but it is still encrypted, any help would be greatly appreciated.

    Link to site :
    https://www.my5.tv/eamonn-ruth-how-the-other-half-lives/season-2/episode-1

    The .m3u8 file starts like this :

    #EXTM3U
    
#EXT-X-VERSION:3
    
#EXT-X-TARGETDURATION:9
    
#EXT-X-PLAYLIST-TYPE:VOD
    
#EXT-X-FAXS-CM:URI="C5206830001A_1500.drm"
    

    
#EXT-X-KEY:METHOD=AES-128,URI="https://access.adobeprimetime.com/faxsks/axs_prod/key",IV=0x82ecdecae409ca0fedae928a76725804
    
#EXT-X-MEDIA-TIME:0.0
    
#EXTINF:9,

  • How to extract subtitles from .wtv file using ffmpeg ?

    20 mai 2013, par user1978421

    does anyone know how to extract subtitles from a wtv file using ffmpeg ?
    i have tried many different commands. None of them works.
    the closest is this one

    ffmpeg -i input.wtv -vn -an -codec:s:0 srt test.srt

    But it complains Error while encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height

    what does that really mean ??

    The complete console output is as follows

    ffmpeg version N-52233-gee94362 Copyright (c) 2000-2013 the FFmpeg developers
    
  built on Apr 18 2013 02:50:33 with gcc 4.8.0 (GCC)
    
  configuration: --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-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
    
  libavutil      52. 26.100 / 52. 26.100
    
  libavcodec     55.  2.100 / 55.  2.100
    
  libavformat    55.  2.100 / 55.  2.100
    
  libavdevice    55.  0.100 / 55.  0.100
    
  libavfilter     3. 56.103 /  3. 56.103
    
  libswscale      2.  2.100 /  2.  2.100
    
  libswresample   0. 17.102 /  0. 17.102
    
  libpostproc    52.  3.100 / 52.  3.100
    
[wtv @ 0269bac0] truncated file
    
    Last message repeated 3 times
    
[mpeg2video @ 02692f60] Invalid frame dimensions 0x0.
    
    Last message repeated 12 times
    
[wtv @ 0269bac0] max_analyze_duration 5000000 reached at 5016000 microseconds
    
Input #0, wtv, from '16 and Pregnant- Unseen Moments_Viva_2013_04_09_19_57_00.wtv':
    
  Metadata:
    
    WM/MediaClassPrimaryID: db9830bd-3ab3-4fab-8a371a995f7ff74
    
    WM/MediaClassSecondaryID: ba7f258a-62f7-47a9-b21f4651c42a000
    
    Title           : 16 and Pregnant: Unseen Moments
    
    WM/SubTitleDescription: Dr Drew hosts a look at the exclusive moments we didn't see from the second season of 16 and Pregnant.
    
    genre           : Documentary;Reality TV
    
    WM/OriginalReleaseTime: 0
    
    WM/MediaCredits : ;;;
    
    service_provider: Viva
    
    service_name    : Viva
    
    WM/MediaOriginalChannel: 16
    
    WM/MediaOriginalChannelSubNumber: 0
    
    WM/MediaOriginalBroadcastDateTime: 2011-12-13T00:00:00Z
    
    WM/MediaOriginalRunTime: 38377217299
    
    WM/MediaIsStereo: false
    
    WM/MediaIsRepeat: true
    
    WM/MediaIsLive  : false
    
    WM/MediaIsTape  : false
    
    WM/MediaIsDelay : false
    
    WM/MediaIsSubtitled: false
    
    WM/MediaIsMovie : false
    
    WM/MediaIsPremiere: false
    
    WM/MediaIsFinale: false
    
    WM/MediaIsSAP   : false
    
    WM/MediaIsSport : false
    
    WM/Provider     : MediaCenterDefault
    
    WM/VideoClosedCaptioning: false
    
    WM/WMRVEncodeTime: 2013-04-09 18:57:02
    
    WM/WMRVSeriesUID: !GenericSeries!16 and Pregnant: Unseen Moments
    
    WM/WMRVServiceID: !Generated!be3ff88ee57a4cadb0334ef3df5bc91b
    
    WM/WMRVProgramID: !MCProgram!37282063
    
    WM/WMRVRequestID: 0
    
    WM/WMRVScheduleItemID: 0
    
    WM/WMRVQuality  : 0
    
    WM/WMRVOriginalSoftPrePadding: 480
    
    WM/WMRVOriginalSoftPostPadding: 60
    
    WM/WMRVHardPrePadding: -300
    
    WM/WMRVHardPostPadding: 0
    
    WM/WMRVATSCContent: false
    
    WM/WMRVDTVContent: true
    
    WM/WMRVHDContent: false
    
    Duration        : 38379654765
    
    WM/WMRVEndTime  : 2013-04-09 20:01:00
    
    WM/WMRVBitrate  : 2.118481
    
    WM/WMRVKeepUntil: 0
    
    WM/WMRVActualSoftPrePadding: 477
    
    WM/WMRVActualSoftPostPadding: 60
    
    WM/WMRVContentProtected: false
    
    WM/WMRVContentProtectedPercent: 0
    
    WM/WMRVExpirationSpan: 9223372036854775807
    
    WM/WMRVInBandRatingSystem: 255
    
    WM/WMRVInBandRatingLevel: 255
    
    WM/WMRVInBandRatingAttributes: 0
    
    WM/WMRVWatched  : true
    
  Duration: 01:03:58.07, start: 1.509175, bitrate: 2118 kb/s
    
    Stream #0:0[0x22](eng): Subtitle: dvb_subtitle
    
    Stream #0:1[0x23](eng): Audio: mp2 (P[0][0][0] / 0x0050), 48000 Hz, stereo, s16p, 256 kb/s
    
    Stream #0:2[0x24]: Video: mpeg2video (Main), yuv420p, 544x576 [SAR 32:17 DAR 16:9], 25 fps, 25 tbr, 10000k tbn, 50 tbc
    
    Stream #0:3[0x0]: Video: mjpeg, yuvj420p, 189x200 [SAR 96:96 DAR 189:200], 90k tbr, 90k tbn, 90k tbc
    
    Metadata:
    
      title           : TV Thumbnail
    
File 'test.srt' already exists. Overwrite ? [y/N] Output #0, srt, to 'test.srt':
    
  Metadata:
    
    WM/MediaClassPrimaryID: db9830bd-3ab3-4fab-8a371a995f7ff74
    
    WM/MediaClassSecondaryID: ba7f258a-62f7-47a9-b21f4651c42a000
    
    Title           : 16 and Pregnant: Unseen Moments
    
    WM/SubTitleDescription: Dr Drew hosts a look at the exclusive moments we didn't see from the second season of 16 and Pregnant.
    
    genre           : Documentary;Reality TV
    
    WM/OriginalReleaseTime: 0
    
    WM/MediaCredits : ;;;
    
    service_provider: Viva
    
    service_name    : Viva
    
    WM/MediaOriginalChannel: 16
    
    WM/MediaOriginalChannelSubNumber: 0
    
    WM/MediaOriginalBroadcastDateTime: 2011-12-13T00:00:00Z
    
    WM/MediaOriginalRunTime: 38377217299
    
    WM/MediaIsStereo: false
    
    WM/MediaIsRepeat: true
    
    WM/MediaIsLive  : false
    
    WM/MediaIsTape  : false
    
    WM/MediaIsDelay : false
    
    WM/MediaIsSubtitled: false
    
    WM/MediaIsMovie : false
    
    WM/MediaIsPremiere: false
    
    WM/MediaIsFinale: false
    
    WM/MediaIsSAP   : false
    
    WM/MediaIsSport : false
    
    WM/Provider     : MediaCenterDefault
    
    WM/VideoClosedCaptioning: false
    
    WM/WMRVEncodeTime: 2013-04-09 18:57:02
    
    WM/WMRVSeriesUID: !GenericSeries!16 and Pregnant: Unseen Moments
    
    WM/WMRVServiceID: !Generated!be3ff88ee57a4cadb0334ef3df5bc91b
    
    WM/WMRVProgramID: !MCProgram!37282063
    
    WM/WMRVRequestID: 0
    
    WM/WMRVScheduleItemID: 0
    
    WM/WMRVQuality  : 0
    
    WM/WMRVOriginalSoftPrePadding: 480
    
    WM/WMRVOriginalSoftPostPadding: 60
    
    WM/WMRVHardPrePadding: -300
    
    WM/WMRVHardPostPadding: 0
    
    WM/WMRVATSCContent: false
    
    WM/WMRVDTVContent: true
    
    WM/WMRVHDContent: false
    
    Duration        : 38379654765
    
    WM/WMRVEndTime  : 2013-04-09 20:01:00
    
    WM/WMRVBitrate  : 2.118481
    
    WM/WMRVKeepUntil: 0
    
    WM/WMRVActualSoftPrePadding: 477
    
    WM/WMRVActualSoftPostPadding: 60
    
    WM/WMRVContentProtected: false
    
    WM/WMRVContentProtectedPercent: 0
    
    WM/WMRVExpirationSpan: 9223372036854775807
    
    WM/WMRVInBandRatingSystem: 255
    
    WM/WMRVInBandRatingLevel: 255
    
    WM/WMRVInBandRatingAttributes: 0
    
    WM/WMRVWatched  : true
    
    Stream #0:0(eng): Subtitle: srt
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (dvbsub -> srt)
    
Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height

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