Recherche avancée

Sur d’autres sites (6355)

• How ffmpeg work on server for different type of users ? [on hold]

  7 août 2016, par sam

  I have a question about ffmpeg and I am using mac and xampp and php and jQuery. I make a function that upload video or image file or another type when I saw examples of ffmpeg in Stack Overflow. My questions are :

  1. client can be window user or mac or another than we have to download all different type of ffmpeg file for example ffmpeg.exe and mac can be another because when I saw how to download ffmpeg than they show me different operating system.

  2. And where we have to save ffmpeg file in xampp

  3. If I download all things for mac and I run it and it works and I make my website online and than any Windows user or Linux user will upload video it will work for him also. But we do not client download ffmpeg in their system

  If anybody know good example of create thumbnail for video please tell me.

• Raising and Rescuing Custom Exception

  24 décembre 2013, par cmw

  I'm using Rails 3 with Carrierwave and FFMPEG to handle video uploads and encoding.

  In my uploader, I'm using FFMPEG to grab the duration of the video from cache before storing it.

  I'd like to raise a custom exception if the video's duration exceeds a specific length and then route the user accordingly. I've spent quite a bit of time trying to figure out how to create, raise and rescue my own custom exceptions in Rails – but, I've had no luck.

  Some posts I've used to try to piece this together include this stack overflow post and this article on customized exception handling in Rails 3. I've had no luck yet.

  I'm hoping someone can offer guidance on the proper approach to this. My mind is blown.

  Below is what my uploader looks like :

  class VideoUploader < CarrierWave::Uploader::Base
  
  
  
    before :store, :ffmpeg
  
  
  
    # Set storage type
  
    storage :fog
  
  
  
    # Override the directory where uploaded files will be stored.
  
    def store_dir
  
      "#{model.class.to_s.underscore}/videos/#{model.id}"
  
    end
  
  
  
    # Add a white list of extensions which are allowed to be uploaded.
  
    def extension_white_list
  
      %w(mov avi mp4 mkv wmv mpg)
  
    end
  
  
  
    def full_cache_path
  
      "#{::Rails.root}/public/#{cache_dir}/#{cache_name}"
  
    end
  
  
  
    private 
  
  
  
    def ffmpeg(*args)
  
      @model.video.cache_stored_file!
  
      movie = FFMPEG::Movie.new("#{model.video.full_cache_path}")
  
      if movie.duration > 600
  
        raise "my custom exception will go here one day"
  
      end
  
    end
  
  
  
  end

• Sidekiq not processing video meta data using stremio-ffmpeg in rails app

  22 juillet 2017, par Arnold

  I am trying to process different video resolutions in background using carrierwave backgrounder, carrierwave-video and sidekiq. everything is working well (all the versions are created in background) except the meta data captured using stremio-ffmpeg. I am completely stuck and can’t figure out why the meta data are not being processed.

  below are my sample codes

  video_uploader.rb

  require 'streamio-ffmpeg'
  
  class VideoUploader < CarrierWave::Uploader::Base
  
  include CarrierWave::Video  # for your video processing
  
  include CarrierWave::Video::Thumbnailer
  
  include ::CarrierWave::Backgrounder::Delay
  
  # Include RMagick or MiniMagick support:
  
  # include CarrierWave::RMagick
  
  # include CarrierWave::MiniMagick
  
  # Choose what kind of storage to use for this uploader:
  
  storage :file
  
  # storage :fog
  
  #byebug
  
  process :save_metadata
  
  # Override the directory where uploaded files will be stored.
  
  # This is a sensible default for uploaders that are meant to be mounted:
  
  def store_dir
  
  default_path = "/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
  
  # if FLAVOR == "uglive"
  
  #   default_path = "/uglive#{default_path}"
  
  # end
  
  "#{VIDEO_STORAGE}#{default_path}"
  
  end
  
  version :thumb do
  
  process thumbnail: [{format: 'png', quality: 10, size: 360, strip: false, 
  
  square: false, logger: Rails.logger}]
  
  def full_filename for_file
  
    png_name for_file, version_name
  
  end
  
  end
  
  def png_name for_file, version_name
  
  #remove all accents
  
  I18n.transliterate(%Q{#{version_name}_#
  
  {for_file.chomp(File.extname(for_file))}.png})
  
  end
  
  #save the video size in the model
  
  def save_metadata
  
  video = FFMPEG::Movie.new(file.file)
  
  if video.valid?
  
    model.duration = video.duration #(duration of the video in seconds)
  
    model.size = video.size #size is bytes
  
    model.video_codec = video.video_codec # "h264"
  
    model.width = video.width # 640 (width of the video in pixels)
  
    model.height = video.height # 480 (height of the video in pixels)
  
    model.audio_codec = video.audio_codec # "aac"
  
   end
  
   end
  
   # Different Video Resolutions
  
   version :res_480p, :do_not_delay => true do
  
   process encode_video: [:mp4, resolution: "720X480"]
  
   end
  
   version :res_720p do
  
   process encode_video: [:mp4, resolution: "1280X720"]
  
  end
  
  version :res_360p do
  
  process encode_video: [:mp4, resolution: "640x360"]
  
  end
  
  version :res_240p do
  
  process encode_video: [:mp4, resolution: "426x240"]
  
  end

  video.rb i called the mount uploader and background_process method (carrierwave video gem)

  mount_uploader :file, VideoUploader
  
  process_in_background :file

  when i run bundle exec sidekiq -q carrierwavethe version are created in background but the save_metadata method is never processed, so the duration,size,width, height, video_codec and audio_codec are nil in the Video model.

  I am stuck on this the whole day. any help will be highly welcome