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    10 avril 2011

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  • Monitoring de fermes de MediaSPIP (et de SPIP tant qu’à faire)

    31 mai 2013, par

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  • Publier sur MédiaSpip

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Sur d’autres sites (5397)

  • Matomo SSO options and why is it useful ?

    8 novembre 2017, par Matomo 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 Matomo (Piwik) at once ? Would you like to save time and effort of managing your users while increasing the security in your business ? Guess what, Matomo has come up with great features to do just that.

    But what is a SSO ?

    Before introducing you to new Matomo (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 Matomo (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 Matomo (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://matomo.org/docs/login-saml/.
    Once finished, you will then be able to use SAML to authenticate to your Matomo (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, Matomo (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 Matomo (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 Matomo (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 Matomo (Piwik) core team and is available as a Free plugin on the marketplace.

    If you are surprised by the possibilities that Matomo (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 Matomo.

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

  • Cut video command producing only audio

    12 février 2018, par Sandeep

    I am using ffmpeg in Android app and my command code looks like :

          final String[] command=new String[]{"-i",inputFileName , "-ss",
    
 String.valueOf(duration) , "-codec","copy", "-t",String.valueOf(start) , outputFileName};

    The logcat contains following ffmpeg output which shows video as 0kB in last line. Where should I look for fixing this because the final output file is a mp4 file but the video content is missing and only audio is present for the trimmed duration :

    02-12 17:22:43.837 25335-25335/service D/FFmpeg: Started command : ffmpeg ffmpeg version n3.4.1 Copyright (c) 2000-2017 the FFmpeg developers
    
02-12 17:22:43.837 25335-25335/service D/FFmpeg: Started command : ffmpeg   built with gcc 4.9.x (GCC) 20150123 (prerelease)
    
02-12 17:22:43.837 25335-25335/service D/FFmpeg: Started command : ffmpeg   configuration: --target-os=linux --cross-prefix=/root/bravobit/ffmpeg-android/toolchain-android/bin/i686-linux-android- --arch=x86 --cpu=i686 --enable-runtime-cpudetect --sysroot=/root/bravobit/ffmpeg-android/toolchain-android/sysroot --disable-asm --enable-pic --enable-libx264 --enable-libfreetype --enable-libmp3lame --enable-libvorbis --enable-libvpx --enable-libopus --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-linux-perf --disable-doc --disable-shared --enable-static --enable-runtime-cpudetect --enable-nonfree --enable-network --enable-avresample --enable-avformat --enable-avcodec --enable-indev=lavfi --enable-hwaccels --enable-ffmpeg --enable-zlib --enable-gpl --enable-small --disable-asm --pkg-config=/root/bravobit/ffmpeg-android/ffmpeg-pkg-config --prefix=/root/bravobit/ffmpeg-android/build/x86 --extra-cflags='-I/root/bravobit/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all -march=i686' --extra-ldflags='-L/root/bravobit/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-cxxflags= --extra-libs='-lpng -lx264 -lm -logg'
    
02-12 17:22:43.837 25335-25335/service D/FFmpeg: Started command : ffmpeg   libavutil      55. 78.100 / 55. 78.100
    
02-12 17:22:43.837 25335-25335/service D/FFmpeg: Started command : ffmpeg   libavcodec     57.107.100 / 57.107.100
    
02-12 17:22:43.837 25335-25335/service D/FFmpeg: Started command : ffmpeg   libavformat    57. 83.100 / 57. 83.100
    
02-12 17:22:43.837 25335-25335/service D/FFmpeg: Started command : ffmpeg   libavdevice    57. 10.100 / 57. 10.100
    
02-12 17:22:43.837 25335-25335/service D/FFmpeg: Started command : ffmpeg   libavfilter     6.107.100 /  6.107.100
    
02-12 17:22:43.838 25335-25335/service D/FFmpeg: Started command : ffmpeg   libavresample   3.  7.  0 /  3.  7.  0
    
02-12 17:22:43.838 25335-25335/service D/FFmpeg: Started command : ffmpeg   libswscale      4.  8.100 /  4.  8.100
    
02-12 17:22:43.838 25335-25335/service D/FFmpeg: Started command : ffmpeg   libswresample   2.  9.100 /  2.  9.100
    
02-12 17:22:43.838 25335-25335/service D/FFmpeg: Started command : ffmpeg   libpostproc    54.  7.100 / 54.  7.100
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/DCIM/SampleVideo_1280x720_1mb.mp4':
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg   Metadata:
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg     major_brand     : isom
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg     minor_version   : 512
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg     compatible_brands: isomiso2avc1mp41
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg     creation_time   : 1970-01-01T00:00:00.000000Z
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg     encoder         : Lavf53.24.2
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg   Duration: 00:00:05.31, start: 0.000000, bitrate: 1589 kb/s
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg     Stream #0:0(und): Video: h264 (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 1205 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg     Metadata:
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg       creation_time   : 1970-01-01T00:00:00.000000Z
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg       handler_name    : VideoHandler
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg     Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 384 kb/s (default)
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg     Metadata:
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg       creation_time   : 1970-01-01T00:00:00.000000Z
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg       handler_name    : SoundHandler
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg Output #0, mp4, to '/storage/emulated/0/VideoTriming/20180212_172243SampleVideo_1280x720_1mb.mp4':
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg   Metadata:
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg     major_brand     : isom
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg     minor_version   : 512
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg     compatible_brands: isomiso2avc1mp41
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg     encoder         : Lavf57.83.100
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg     Stream #0:0(und): Video: h264 (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 1205 kb/s, 25 fps, 25 tbr, 12800 tbn, 12800 tbc (default)
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg     Metadata:
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg       creation_time   : 1970-01-01T00:00:00.000000Z
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg       handler_name    : VideoHandler
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg     Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 384 kb/s (default)
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg     Metadata:
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg       creation_time   : 1970-01-01T00:00:00.000000Z
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg       handler_name    : SoundHandler
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg Stream mapping:
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg   Stream #0:0 -> #0:0 (copy)
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg   Stream #0:1 -> #0:1 (copy)
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg Press [q] to stop, [?] for help
    
02-12 17:22:43.910 25335-25335/service D/FFmpeg: Started command : ffmpeg frame=    0 fps=0.0 q=-1.0 Lsize=      46kB time=00:00:00.98 bitrate= 387.1kbits/s speed= 115x    
    
02-12 17:22:43.910 25335-25335/service D/FFmpeg: Started command : ffmpeg video:0kB audio:46kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.145508%

    My input file is the first 1MB mp4 sample video downloaded from following website :

    http://www.sample-videos.com/

  • Video parameters for best web scrolling performance [duplicate]

    22 février 2018, par biven

    This question already has an answer here :

    There is web application which provides next workflow. User uploads video -> backend(by using ffmpeg) transform this video for smaller size(320x240) -> web browser plays transformed video. Key feature of this application should be excellent scrolling possibility of video by progress bar. I mean that video should be scrolled as smoothly as possible (without any jumps) when user moves progress bar position back and forward.

    I thought that small size of video helps to provide good scrolling possibility. But that’s incorrect. I have 2 different videos, one scrolling perfect(as I want), second has same resolotion(320x240), but it is scrolling with jumps and breaks.

    By ffprobe I compared both videos and I have next results :

    Video 1(good scrolling) :

    libavutil      56.  7.100 / 56.  7.100
    
  libavcodec     58.  9.100 / 58.  9.100
    
  libavformat    58.  5.100 / 58.  5.100
    
  libavdevice    58.  0.101 / 58.  0.101
    
  libavfilter     7. 11.101 /  7. 11.101
    
  libswscale      5.  0.101 /  5.  0.101
    
  libswresample   3.  0.101 /  3.  0.101
    
  libpostproc    55.  0.100 / 55.  0.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'spacetestSMALL_512kb.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: mp41
    
    creation_time   : 1970-01-01T00:00:00.000000Z
    
    title           : small test video - http://www.archive.org/details/alanoakleysmalltestvideo
    
    encoder         : Lavf51.10.0
    
    comment         : license:  http://www.copyright.gov/
    
  Duration: 00:00:48.32, start: 0.000000, bitrate: 555 kb/s
    
    Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 320x240, 505 kb/s, 25 fps, 25 tbr, 25 tbn, 50 tbc (default)
    
    Metadata:
    
      creation_time   : 1970-01-01T00:00:00.000000Z
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 45 kb/s (default)
    
    Metadata:
    
      creation_time   : 1970-01-01T00:00:00.000000Z
    
      handler_name    : SoundHandler

    Video 2(bad scrolling) :

    libavutil      56.  7.100 / 56.  7.100
    
  libavcodec     58.  9.100 / 58.  9.100
    
  libavformat    58.  5.100 / 58.  5.100
    
  libavdevice    58.  0.101 / 58.  0.101
    
  libavfilter     7. 11.101 /  7. 11.101
    
  libswscale      5.  0.101 /  5.  0.101
    
  libswresample   3.  0.101 /  3.  0.101
    
  libpostproc    55.  0.100 / 55.  0.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'e10b1c93-5325-4500-ae7c-12ccd0f617bd.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf58.5.100
    
  Duration: 00:00:07.96, start: 0.000000, bitrate: 428 kb/s
    
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 320x240 [SAR 4:3 DAR 16:9], 391 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 33 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler

    What is the key parameter of video which provide possibility for good scrolling in web browser ?

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