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Autres articles (27)

  • La file d’attente de SPIPmotion

    28 novembre 2010, par

    Une file d’attente stockée dans la base de donnée
    Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
    Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter ; id_document, l’identifiant numérique du document original à encoder ; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement ; objet, le type d’objet auquel (...)

  • List of compatible distributions

    26 avril 2011, par

    The table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
    If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...)

  • Selection of projects using MediaSPIP

    2 mai 2011, par

    The examples below are representative elements of MediaSPIP specific uses for specific projects.
    MediaSPIP farm @ Infini
    The non profit organizationInfini develops hospitality activities, internet access point, training, realizing innovative projects in the field of information and communication technologies and Communication, and hosting of websites. It plays a unique and prominent role in the Brest (France) area, at the national level, among the half-dozen such association. Its members (...)

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  • FFmpeg on iPhone - Modifying Video Orientation

    6 avril 2015, par Matthew McGoogan

    I’m messing with h264 videos loaded with FFmpeg on the iPhone 3GS. The problem is any videos recorded in "Portrait" orientation have a transformation matrix applied to them causing them to display rotated 90 degrees counter-clock.

    From what I understand thus far, I just need to modify the transform matrix in the ’tkhd’ atom. The problem is I am having trouble accessing or modifying this data. I checked out the FFmpeg implementation for :

    static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)

    which clearly shows how the matrix is accessed in avformat but when I try to access the header bytes using the same functions I am not getting any rational values. Even if I were to successfully pull the matrix I’m not sure how to replace it ? FFmpeg has functions for retrieving and appending to the track header but nothing for replace it seems ?

    Any help would be greatly appreciated.

    Thanks,
    Matt.

  • How to create a video thumbnail without ffmpeg or HTML5 video canvas ? [duplicate]

    14 mai 2014, par user3631926

    This question already has an answer here :

    I need to create a thumbnail from a video, I have tried the below options but they didn’t work for my case. I am using S3 and CloudFront.

    1. ffmpeg is not supported via my hosting because I am using a shared hosting and I need to upgrade to VPS or dedicated server if I want to use ffmpeg.

    2. I tried taking a screenshot from the video using HTML5 drawImage and toDataURL functions, but it is throwing SecurityError because my video file is located on Amazon CloudFront and my code is hosted somewhere else.

    Is there any other option or a workaround to the second option ? I don’t want to upgrade my server for just the thumbnail issue.

  • Webpage with several IP-cameras' streams

    28 mars 2013, par JustLogin

    I have some live RTSP streams from IP-cameras with H.264 video and g-729 sound codecs. I need to display them on a webpage, which could be opened in any popular browser in Windows, Linux and Mac. Also, there must be an option to record and to save to user's PC a video from any stream to flv file , using Start/Stop recording button.
    The problem is, I don't know what technologies to choose : all solutions which I came up with, have several problems.

    The first variant is to transcode stream to RTMP with FFmpeg, changing audio codec to MP3.That way it can be played with a small Flash app. It works, but I don't know, how to save video because the .flv-writing library requires Bitmaps and ByteArray sound data chunks as input. It's not a problem to get images from Video class, but I have no idea about sound : SoundMixer class couldn't recieve any data from Video (or NetStream) with it's computeSpectrum method. So , impossibility of writing sound to .flv is the only problem of this solution.

    Another variant is to use java applet, based on Xuggler library. It work's fine, but the library is VERY huge, and "applet's" size is near 40mb !

    I also tryed Silverlight (it's problem is, it isn't popular, so everyone have to download it for 1 app only) and HTML5 (which does not allow capturing sound from incoming live stream, like Flash), but they give no solutions too. So I don't know, how to realize this project, can you give me any idea please ?

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