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  • Script d’installation automatique de MediaSPIP

    25 avril 2011, par

    Afin de palier aux difficultés d’installation dues principalement aux dépendances logicielles coté serveur, un script d’installation "tout en un" en bash a été créé afin de faciliter cette étape sur un serveur doté d’une distribution Linux compatible.
    Vous devez bénéficier d’un accès SSH à votre serveur et d’un compte "root" afin de l’utiliser, ce qui permettra d’installer les dépendances. Contactez votre hébergeur si vous ne disposez pas de cela.
    La documentation de l’utilisation du script d’installation (...)

  • Demande de création d’un canal

    12 mars 2010, par

    En fonction de la configuration de la plateforme, l’utilisateur peu avoir à sa disposition deux méthodes différentes de demande de création de canal. La première est au moment de son inscription, la seconde, après son inscription en remplissant un formulaire de demande.
    Les deux manières demandent les mêmes choses fonctionnent à peu près de la même manière, le futur utilisateur doit remplir une série de champ de formulaire permettant tout d’abord aux administrateurs d’avoir des informations quant à (...)

  • La sauvegarde automatique de canaux SPIP

    1er avril 2010, par

    Dans le cadre de la mise en place d’une plateforme ouverte, il est important pour les hébergeurs de pouvoir disposer de sauvegardes assez régulières pour parer à tout problème éventuel.
    Pour réaliser cette tâche on se base sur deux plugins SPIP : Saveauto qui permet une sauvegarde régulière de la base de donnée sous la forme d’un dump mysql (utilisable dans phpmyadmin) mes_fichiers_2 qui permet de réaliser une archive au format zip des données importantes du site (les documents, les éléments (...)

Sur d’autres sites (12122)

  • Why is ffmpeg output video contrast / brightness too bright ?

    24 février 2024, par danday74

    I have a .mov file which I run through ffmpeg to create HLS segments / chunks. However, when I playback the HLS video it is too bright.

    


    For a sanity check, I ran the same .mov video file through the FlowPlayer processing pipeline and the results were the same, the output video is too bright !

    


    I have a number of videos. Most do not have this problem but some (and only some) of the .mov files exhibit this issue.

    


    A broken video stream reports (see below for full output) :

    


    Stream #0:0[0x1](und): Video: hevc (Main 10) (hvc1 / 0x31637668), yuv420p10le(tv, bt2020nc/bt2020/arib-std-b67), 1920x1080, 8507 kb/s, 29.98 fps, 29.97 tbr, 600 tbn (default)


    


    A working video stream reports (see below for full output) :

    


    Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 3840x2160, 45457 kb/s, 29.99 fps, 29.97 tbr, 600 tbn (default)


    


    Is this something to do with hevc v h264 (whatever they mean) ?

    


    Incidentally, I am using the native HTML5 video player in conjunction with hls.js to playback the videos.

    


    How do I fix this ?

    


    Here is my ffmpeg command :

    


    ffmpeg -i "rgb.mov" \
  -v warning -preset ultrafast -g 59.96 -sc_threshold 0 \
  -map 0:0 -map 0:0 \
  -s:v:0 1920x1080 -c:v:0 libx264 -b:v:0 4521k \
  -s:v:1 1920x1080 -c:v:1 libx264 -b:v:1 7347k \
  -var_stream_map "v:0 v:1" \
  -master_pl_name master.m3u8 -f hls \
  -hls_time 6 -hls_list_size 0 -hls_playlist_type vod \
  -hls_segment_filename "hls/v%v/chunk%d.ts" "hls/v%v/index.m3u8"


    


    And here are some screenshots showing the original video in comparison to the output video.

    


    ORIGINAL :

    


    enter image description here

    


    OUTPUT :

    


    enter image description here

    


    For the problem video ffmpeg -i "rgb.mov" -hide_banner gives :

    


    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'rgb.mov':
  Metadata:
    major_brand     : qt
    minor_version   : 0
    compatible_brands: qt
    creation_time   : 2021-08-03T11:23:40.000000Z
    com.apple.quicktime.location.accuracy.horizontal: 3.594173
    com.apple.quicktime.location.ISO6709: +51.5483+000.1628+000.459/
    com.apple.quicktime.make: Apple
    com.apple.quicktime.model: iPhone 12 Pro
    com.apple.quicktime.software: 14.7.1
    com.apple.quicktime.creationdate: 2021-08-03T12:23:40+0100
  Duration: 00:00:54.54, start: 0.000000, bitrate: 8730 kb/s
  Stream #0:0[0x1](und): Video: hevc (Main 10) (hvc1 / 0x31637668), yuv420p10le(tv, bt2020nc/bt2020/arib-std-b67), 1920x1080, 8507 kb/s, 29.98 fps, 29.97 tbr, 600 tbn (default)
    Metadata:
      creation_time   : 2021-08-03T11:23:40.000000Z
      handler_name    : Core Media Video
      vendor_id       : [0][0][0][0]
      encoder         : HEVC
    Side data:
      DOVI configuration record: version: 1.0, profile: 8, level: 4, rpu flag: 1, el flag: 0, bl flag: 1, compatibility id: 4
  Stream #0:1[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 172 kb/s (default)
    Metadata:
      creation_time   : 2021-08-03T11:23:40.000000Z
      handler_name    : Core Media Audio
      vendor_id       : [0][0][0][0]
  Stream #0:2[0x3](und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
    Metadata:
      creation_time   : 2021-08-03T11:23:40.000000Z
      handler_name    : Core Media Metadata
  Stream #0:3[0x4](und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
    Metadata:
      creation_time   : 2021-08-03T11:23:40.000000Z
      handler_name    : Core Media Metadata
  Stream #0:4[0x5](und): Data: none (mebx / 0x7862656D), 34 kb/s (default)
    Metadata:
      creation_time   : 2021-08-03T11:23:40.000000Z
      handler_name    : Core Media Metadata
At least one output file must be specified


    


    For a working video ffmpeg -i "rgb.mov" -hide_banner gives :

    


    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'rgb.mov':
  Metadata:
    major_brand     : qt
    minor_version   : 0
    compatible_brands: qt
    creation_time   : 2021-12-01T10:53:47.000000Z
    com.apple.quicktime.location.accuracy.horizontal: 4.785777
    com.apple.quicktime.location.ISO6709: +51.5485+000.1627+012.533/
    com.apple.quicktime.make: Apple
    com.apple.quicktime.model: iPhone 12 Pro
    com.apple.quicktime.software: 14.8.1
    com.apple.quicktime.creationdate: 2021-12-01T10:53:47+0000
  Duration: 00:00:36.35, start: 0.000000, bitrate: 45692 kb/s
  Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 3840x2160, 45457 kb/s, 29.99 fps, 29.97 tbr, 600 tbn (default)
    Metadata:
      creation_time   : 2021-12-01T10:53:47.000000Z
      handler_name    : Core Media Video
      vendor_id       : [0][0][0][0]
      encoder         : H.264
  Stream #0:1[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 188 kb/s (default)
    Metadata:
      creation_time   : 2021-12-01T10:53:47.000000Z
      handler_name    : Core Media Audio
      vendor_id       : [0][0][0][0]
  Stream #0:2[0x3](und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
    Metadata:
      creation_time   : 2021-12-01T10:53:47.000000Z
      handler_name    : Core Media Metadata
  Stream #0:3[0x4](und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
    Metadata:
      creation_time   : 2021-12-01T10:53:47.000000Z
      handler_name    : Core Media Metadata
  Stream #0:4[0x5](und): Data: none (mebx / 0x7862656D), 34 kb/s (default)
    Metadata:
      creation_time   : 2021-12-01T10:53:47.000000Z
      handler_name    : Core Media Metadata
At least one output file must be specified


    


  • react native app doesn't load my video which is made by ffmpeg

    10 mars 2023, par yabbee

    I'm working on react native expo project and using expo-av to play video.I'm experimenting on my iphone and it's working almost fine. I copy and paste the sample code on expo av doc and Big Buck Bunny video is loaded successfully and able to play. But, there is a video that can't be played on my app. I have a video which is stored on s3 server. This is the mp4 video made by ffmpeg command on my computer and manually uploaded it on s3. I can download it and play on my machine. But when I try to load that video on my expo app, the video doesn't show up on the component at all. I write video source correctly including https:// but doesn't show up anything. How can i solve this problem ? I'm using expo 48.0.0 , expo-av 13.2.1 and expo-dev-client 2.1.5 now.

    


    Here is the ffmpeg code that I've used to make video. As you can see, I'm making a retro video by overlaying grain effect mp4 video which I downloaded.

    


    ffmpeg -i /Users/yosuke/Desktop/ffmpeg_playground/effects/grainAndFlash.mp4 -i 
{inputFilePath} -filter_complex "[0:a][1:a]amerge[mixedAudio];
[0]format=rgba,colorchannelmixer=aa=0.25[fg];[1][fg]overlay[out];
[out]trim=0:32,setpts=PTS-STARTPTS[video]" -map "[video]" -map "[mixedAudio]" -
pix_fmt yuv420p -c:v libx264 -crf 18 -shortest {outputFilePath}


    


    Here is the Expo app code

    


    import React, { useState, useEffect, useContext, useRef } from &#x27;react&#x27;;&#xA;import { View, Text, ScrollView, TouchableOpacity, Dimensions } from &#x27;react-native&#x27;;&#xA;&#xA;const Container = () => {&#xA;    const vidRef = useRef(null);&#xA;return (&#xA;    <scrollview style="{{" 1="1">&#xA;      &#xA;    </scrollview>&#xA;  );&#xA;};&#xA;&#xA;export default Container;&#xA;

    &#xA;

  • Piwik Mobile 2 for Android – Release Candidate

    6 novembre 2013, par thomas — Community

    Exciting news ! We are proud to announce the availability of the first release candidate of Piwik Mobile 2 for Android. Check out the videos here or learn more in the FAQ.

    Piwik Mobile Users : we need your feedback !

    We have been testing Piwik Mobile 2 extensively at present. Now is your time to help us to track down any bugs, or even suggest usability improvements before the upcoming release in a few weeks. We are really interested in your feedback !

    Download

    Piwik Mobile 2 RC 1 for Android 4+

    Known issues

    All known issues are Piwik related and most of them will be fixed in the Piwik 2.0 release :

    • Some visitors in Visitor Log might be skipped #4044 (fixed)
    • If you are using a report date like “Last 7″ or “Last 30″, the number of visits won’t be displayed in the “All Websites Dashboard” #4068
    • Sometimes an HTML entity is displayed in the visitor screen #3970 (fixed)
    • Evolution graph fails to load and returns stack trace for Actions.getPageUrls #3943 (fixed)
    • Date Range is not correct recognized under circumstances #3074 (fixed)

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