Recherche avancée

Médias (91)

Autres articles (27)

  • Soumettre améliorations et plugins supplémentaires

    10 avril 2011

    Si vous avez développé une nouvelle extension permettant d’ajouter une ou plusieurs fonctionnalités utiles à MediaSPIP, faites le nous savoir et son intégration dans la distribution officielle sera envisagée.
    Vous pouvez utiliser la liste de discussion de développement afin de le faire savoir ou demander de l’aide quant à la réalisation de ce plugin. MediaSPIP étant basé sur SPIP, il est également possible d’utiliser le liste de discussion SPIP-zone de SPIP pour (...)

  • Ajouter notes et légendes aux images

    7 février 2011, par

    Pour pouvoir ajouter notes et légendes aux images, la première étape est d’installer le plugin "Légendes".
    Une fois le plugin activé, vous pouvez le configurer dans l’espace de configuration afin de modifier les droits de création / modification et de suppression des notes. Par défaut seuls les administrateurs du site peuvent ajouter des notes aux images.
    Modification lors de l’ajout d’un média
    Lors de l’ajout d’un média de type "image" un nouveau bouton apparait au dessus de la prévisualisation (...)

  • Submit bugs and patches

    13 avril 2011

    Unfortunately a software is never perfect.
    If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
    If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
    You may also (...)

Sur d’autres sites (6707)

  • Dreamcast Operating Systems

    16 septembre 2010, par Multimedia Mike — Sega Dreamcast

    The Sega Dreamcast was famously emblazoned with a logo proudly announcing that it was compatible with Windows CE :



    It’s quite confusing. The console certainly doesn’t boot into some version of Windows to launch games. Apparently, there was a special version of CE developed for the DC and game companies had the option to leverage it. I do recall that some game startup screens would similarly advertise Windows CE.

    Once the homebrew community got ahold of the device, the sky was the limit. I think NetBSD was the first alternative OS to support the Dreamcast. Meanwhile, I have recollections of DC Linux and LinuxDC projects along with more generic Linux-SH and SH-Linux projects.



    DC Evolution hosts a disc image available for download with an unofficial version of DC Linux, assembled by one Adrian O’Grady. I figured out how to burn the disc (burning DC discs is a blog post of its own) and got it working in the console.

    It’s possible to log in directly via the physical keyboard or through a serial terminal provided that you have a coder’s cable. That reminds me– my local Fry’s had a selection of USB-to-serial cables. I think this is another area that is sufficiently commoditized that just about any cable ought to work with Linux out of the box. Or maybe I’m just extrapolating from the experience of having the cheapest cable in the selection (made by io connect) plug and play with Linux.



    Look ! No messy converter box in the middle as in the Belkin case. The reason I went with this cable is that the packaging claimed it was capable of up to 500 Kbits/sec. Most of the cables advertised a max of 115200 bps. I distinctly recall being able to use the DC coder’s cable at 230400 bps a long time ago. Alas, 115200 seems to be the speed limit, even with this new USB cable.

    Anyway, the distribution is based on a 2.4.5 kernel circa 2001. I tried to make PPP work over the serial cable but the kernel doesn’t have support. If you’re interested, here is some basic information about the machine from Linux’s perspective, gleaned from some simple commands. This helps remind us of a simpler time when Linux was able to run comfortably on a computer with 16 MB of RAM.

    Debian GNU/Linux testing/unstable dreamcast ttsc/1
    

    dreamcast login : root
    Linux dreamcast 2.4.5 #27 Thu May 31 07:06:51 JST 2001 sh4 unknown

    Most of the programs included with the Debian GNU/Linux system are
    freely redistributable ; the exact distribution terms for each program
    are described in the individual files in /usr/share/doc/*/copyright

    Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
    permitted by applicable law.

    dreamcast : # uname -a
    Linux dreamcast 2.4.5 #27 Thu May 31 07:06:51 JST 2001 sh4 unknown

    dreamcast : # cat /proc/cpuinfo
    cpu family : SH-4
    cache size : 8K-byte/16K-byte
    bogomips : 199.47

    Machine : dreamcast
    CPU clock : 200.00MHz
    Bus clock : 100.00MHz
    Peripheral module clock : 50.00MHz

    dreamcast : # top -b

    09:14:54 up 14 min, 1 user, load average : 0.04, 0.03, 0.03
    15 processes : 14 sleeping, 1 running, 0 zombie, 0 stopped
    CPU states : 1.1% user, 5.8% system, 0.0% nice, 93.1% idle
    Mem : 14616K total, 11316K used, 3300K free, 2296K buffers
    Swap : 0K total, 0K used, 0K free, 5556K cached

    PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME COMMAND
    219 root 18 0 1072 1068 868 R 5.6 7.3 0:00 top
    1 root 9 0 596 596 512 S 0.0 4.0 0:01 init
    2 root 9 0 0 0 0 SW 0.0 0.0 0:00 keventd
    3 root 9 0 0 0 0 SW 0.0 0.0 0:00 kswapd
    4 root 9 0 0 0 0 SW 0.0 0.0 0:00 kreclaimd
    5 root 9 0 0 0 0 SW 0.0 0.0 0:00 bdflush
    6 root 9 0 0 0 0 SW 0.0 0.0 0:00 kupdated
    7 root 9 0 0 0 0 SW 0.0 0.0 0:00 kmapled
    39 root 9 0 900 900 668 S 0.0 6.1 0:00 devfsd
    91 root 8 0 652 652 556 S 0.0 4.4 0:00 pump
    96 daemon 9 0 524 524 420 S 0.0 3.5 0:00 portmap
    149 root 9 0 944 944 796 S 0.0 6.4 0:00 syslogd
    152 root 9 0 604 604 456 S 0.0 4.1 0:00 klogd
    187 root 9 0 540 540 456 S 0.0 3.6 0:00 getty
    201 root 9 0 1380 1376 1112 S 0.0 9.4 0:01 bash

    Note that at this point I had shutdown both gpm and inetd. The rest of the processes, save for bash, are default. The above stats only report about 14 MB of RAM ; where are the other 2 MB ?

    dreamcast : # df -h
    Filesystem            Size  Used Avail Use% Mounted on
    /dev/rd/1             2.0M  560k  1.4M  28% /
    
  • How can I concatenate these two video files that are in different formats with ffmpeg ?

    11 juin 2018, par jaybers

    File s.mp4 is created from a photo and a silent audio track was added in.
    File r.mp4 was created using the built in video record on an android tablet.

    I would like to try to match s.mp4 to r.mp4 so that they can concatenate (s then r). Right now, the time base seems off and it plays audio from the r.mp4 but never shows the video. It it always shows the video from s.mp4. I was able to match the tbn of 90k by using -video_track_timescale 90k but I did not know how to match the tbc. It is 180k on one and 59.94 on the other.

    Probe for s.mp4

    ./ffprobe s.mp4
    ffprobe version 4.0-tessus Copyright (c) 2007-2018 the FFmpeg developers
     built with Apple LLVM version 9.1.0 (clang-902.0.39.1)
     configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libass --enable-libbluray --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-version3 --pkg-config-flags=--static --disable-ffplay
     libavutil      56. 14.100 / 56. 14.100
     libavcodec     58. 18.100 / 58. 18.100
     libavformat    58. 12.100 / 58. 12.100
     libavdevice    58.  3.100 / 58.  3.100
     libavfilter     7. 16.100 /  7. 16.100
     libswscale      5.  1.100 /  5.  1.100
     libswresample   3.  1.100 /  3.  1.100
     libpostproc    55.  1.100 / 55.  1.100
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 's.mp4':
     Metadata:
       major_brand     : isom
       minor_version   : 512
       compatible_brands: isomiso2avc1mp41
       encoder         : Lavf57.25.100
     Duration: 00:00:05.04, start: 0.000000, bitrate: 296 kb/s
       Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 286 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc (default)
       Metadata:
         handler_name    : VideoHandler
       Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 2 kb/s (default)
       Metadata:
         handler_name    : SoundHandler

    Probe for r.mp4

    ./ffprobe r.mp4
    ffprobe version 4.0-tessus Copyright (c) 2007-2018 the FFmpeg developers
     built with Apple LLVM version 9.1.0 (clang-902.0.39.1)
     configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libass --enable-libbluray --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-version3 --pkg-config-flags=--static --disable-ffplay
     libavutil      56. 14.100 / 56. 14.100
     libavcodec     58. 18.100 / 58. 18.100
     libavformat    58. 12.100 / 58. 12.100
     libavdevice    58.  3.100 / 58.  3.100
     libavfilter     7. 16.100 /  7. 16.100
     libswscale      5.  1.100 /  5.  1.100
     libswresample   3.  1.100 /  3.  1.100
     libpostproc    55.  1.100 / 55.  1.100
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'r.mp4':
     Metadata:
       major_brand     : mp42
       minor_version   : 0
       compatible_brands: isommp42
       creation_time   : 2018-06-11T20:12:03.000000Z
       com.android.version: 7.0
     Duration: 00:00:10.89, start: 0.000000, bitrate: 17087 kb/s
       Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709/bt709/smpte170m), 1920x1080, 16810 kb/s, SAR 1:1 DAR 16:9, 30 fps, 30 tbr, 90k tbn, 180k tbc (default)
       Metadata:
         creation_time   : 2018-06-11T20:12:03.000000Z
         handler_name    : VideoHandle
       Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 256 kb/s (default)
       Metadata:
         creation_time   : 2018-06-11T20:12:03.000000Z
         handler_name    : SoundHandle
  • Piwik SSO options and why is it useful ?

    8 novembre 2017, par Piwik Core Team — Plugins

    Bored with typing again and again different logins and passwords for each service you have access to ? Would you like to add hundreds or thousands of users with different roles to your Piwik at once ? Would you like to save time and effort of managing your users while increasing the security in your business ? Guess what, Piwik has come up with great features to do just that.

    But what is a SSO ?

    Before introducing you to new Piwik features, let me explain what a SSO is.
    SSO is the acronym for Single Sign On. As its name suggests this authentication process allows a user to access multiple applications with one set of login credentials.

    Advantages of using a SSO are numerous :

    • improving security, for example when an employee is leaving your company, how can you check that all his credentials have been removed ?
    • reducing employees time-wasters such as having to enter logins/passwords each time.
    • providing a centralized database for administrators. They can then easily manage permissions of all employees saving them heaps of time.
    • reduces support costs related to authentication / accounts management.

    In order to provide SSO options, two Piwik plugins have been developed and are available on the marketplace :

    SAML

    SAML stands for “Security Assertion Markup Language”, it is a standard in order to exchange authentication and authorization between an identity provider (OneLogin, Okta, Ping Identity, ADFS, Google, Salesforce, SharePoint…) and a service provider.
    An identity provider is an online service that authenticates users on the Internet by using security tokens.

    Are you wondering if your business or organization is using any of these providers ? We recommend to ask your operations team or sysadmin.

    At InnoCraft, we developed a plugin in order to allow SSO with SAML for Piwik. It can ensure consistent access control across the enterprise and external providers, potentially reducing support costs related to authentication and accounts management.

    The installation process is straightforward. All you need is to get the SAML premium feature from the marketplace. Once installed, you will access the SAML configuration interface through the admin where you can configure various settings :

    • SAML Status
    • Identity Provider (Entity ID, SSO endpoint info, Public x509 certificate)
    • Just-in-time provisioning and Mapping attributes
    • Access Synchronization
    • Advanced settings

    From there you will need to follow our detailed documentation to have it up and running :
    https://piwik.org/docs/login-saml/.
    Once finished, you will then be able to use SAML to authenticate to your Piwik account :

    As all premium features, SAML is eligible to a 30-day period money back guarantee, so do not hesitate to have it a try.

    LDAP

    LDAP stands for Lightweight Directory Access Protocol. As its names implies LDAP is a directory, hosted on a server, which organizes the data about people in your company.
    Thanks to the LDAP plugin, Piwik can be connected to your LDAP infrastructure and then use all its power in order to give each individual an access with different rights according to their needs.

    Let’s say that you have 1,000 employees within a company and they all need right now an access to the analytics reports in Piwik with different roles. This is what LDAP can do.

    Moreover if your business or organization is already using LDAP, we recommend using the LDAP connector for Piwik for better security, to stop wasting time of your users and sysadmins, and to reduce the costs related to account management.

    You understood it well. LDAP is a plugin which saves a LOT of time within an organization. Here is a preview of the settings part :

    LDAP has been developed by the Piwik core team and is available as a Free plugin on the marketplace.

    If you are surprised by the possibilities that Piwik is offering in terms of plugins, the good news is that many other plugins are waiting for you on the marketplace. Check out our premium marketplace which offers state-of-the-art plugins to get the most out of Piwik.

    And if you are a developer feel free to create your own plugin, a detailed documentation is available at : https://developer.piwik.org/guides/getting-started-part-1.