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• mov : Fix little endian audio detection

  13 mars 2015, par Vittorio Giovara

  mov : Fix little endian audio detection
  Set this field to TRUE if the audio component is to operate on
  
  little-endian data, and FALSE otherwise.
  However TRUE and FALSE are not defined. Since this flag is just a boolean,
  
  interpret all values except for 0 as little endian.
  Sample-Id : 64bit_FLOAT_Little_Endian.mov
  

  • [DBH] libavformat/mov.c

• Converting Videos In the Background ROR 3

  2 octobre 2012, par DragonFire353

  I've searched around on google and have come up with only one site that explains how to do this : http://railsonedge.blogspot.com/2009/01/flash-video-tutorial-with-rails-ffmpeg.html?m=0 I'm already using paperclip and already have everything set up with it and like using it better than the way this site is doing it. Is there a way to convert videos in the background while keeping track of the state of it using paperclip ? My Video.rb currently :

  class Video < ActiveRecord::Base
  
    belongs_to :user
  
    has_many :comments, dependent: :destroy
  
    attr_accessible :video, :user_id, :video_file_name, :title, :public, :description, :views
  
  
  
    has_attached_file :video, :styles => { 
  
      :video => { geometry: "800x480>", format: 'webm' },
  
      :thumb => { geometry: "200x200>", format: 'png', time: 3 },
  
    }, processors: [:ffmpeg], url: "/users/:user_id/videos/:id/:basename_:style.:extension"
  
  
  
    #process_in_background :video #causes death
  
  
  
    validates :video, presence: true
  
    validates :description, presence: true, length: { minimum: 5, maximum: 100}
  
    validates :title, presence: true, length: { minimum: 1, maximum: 15 }
  
  
  
    validates_attachment_size :video, less_than: 1.gigabytes
  
    validates_attachment :video, presence: true
  
  
  
    default_scope order: 'created_at DESC'
  
  
  
    Paperclip.interpolates :user_id do |attachment, style|attachment.instance.user_id
  
    end
  
  
  
    def self.search(search)
  
      if search
  
        find(:all, conditions: ["public = 't' AND title LIKE ?", "%#{search}%"], order: "created_at DESC")
  
      else
  
        find(:all, conditions: ["public = 't'"], order: "created_at DESC")
  
      end
  
    end
  
  
  
    def self.admin_search(search)
  
      if search
  
        find(:all, conditions: ['title LIKE ?', "%#{search}%"], order: "created_at DESC")
  
      else
  
        find(:all, order: "created_at DESC")
  
      end
  
    end
  
  
  
  end

• Flutter ffmpeg can't get width and height

  26 août 2022, par user31929

  I'm trying to retrive some info like duration,width and height from videos i pick from the phone gallery. I'm using :

  


   flutter_ffmpeg: ^0.4.2


  


  this is the code i use :

  


  Future getVideoInfo(String VideoPath) async {
    bool errorResult = false;
    FlutterFFprobe fFprobe = FlutterFFprobe();
    String? duration = "0";
    String? width = "0";
    String? height = "0";
    await fFprobe.getMediaInformation(VideoPath).then((info) {
      duration = info.getAllProperties()['duration'].toString();
      width = info.getAllProperties()['width'].toString();
      height = info.getAllProperties()['height'].toString();
    }, onError: (value) {
      errorResult = true;
    }).catchError((error) {
      errorResult = true;
    });

    if (errorResult == true) {
      Map resultmap = {"width": "0", "height": "0", "duration": "0"};
      return resultmap;
    }
    Map resultmap = {"width": width, "height": height, "duration": duration};
    return resultmap;
  }


  


  According to documentation https://pub.dev/packages/flutter_ffmpeg i'm trying to retrive elements in that way :

  


  info.getAllProperties()['width'].toString();


  


  but i can retrive only duration, width and eight are always null. Values are in the getAllProperties dictionary because i can see "width=1920 and height=824" using the Vscode debugger.
There is only a difference beetween those voices and "duration" , they are grayed out by the Vscode debugger insted of duration that is "red".
Anyway, why i can't access width and eight even if they seems to be accessible ?