require 'vcs.rb'

  video = VCSRuby::Video.new 'video.mkv'
  sheet = video.contact_sheet

  sheet.format = :jpg
  sheet.sheet.initialize_geometry(3,3,nil)
  sheet.signature = nil
  sheet.thumbnail_width = 320
  sheet.initialize_filename('out.jpg')
  sheet.build

  frame = video.frame VCSRuby::TimeIndex.new('1:22')
  frame.filename = "frame.jpg"
  frame.capture_and_evade # evade blank frames

# encoding: utf-8

require "vcs"

video = VCSRuby::Video.new "video.avi"

if video.valid?
  # Fields on .info: duration, bit_rate, size, format, extension, raw (hash, depends on capturer)
  puts "Video duration: #{video.info.duration}"

  # Supports multiple streams
  puts "Video codec: #{video.video_streams.first.codec}"

  # Fields on a video stream: width, height, codec, color_space, bit_rate, frame_rate, aspect_ratio, raw (hash, depends on capturer)
  puts "Video frame rate: #{video.video.frame_rate}"

  # Supports multiple streams:
  puts "Audio codec: #{video.audio_streams.first.codec}"

  # Fields on a audio stream: codec, channels, channel_layout, sample_rate, bit_rate, raw (hash, depends on capturer)
  puts "Audio sample rate: #{video.video.sample_rate}"

end

# encoding: utf-8

require "vcs"

class VideoUploader < CarrierWave::Uploader::Base
  include CarrierWave::MiniMagick

  storage :file

  def store_dir
    "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
  end

  version :contact_sheet do
    process :contact_sheet_processor
  end

  def contact_sheet_format end
    :png
  end

  def cs_url
    "#{File.dirname(url)}/#{File.basename(url,'.*')}.#{contact_sheet_format}"
  end

  def contact_sheet_processor
    # input
    directory = File.dirname(current_path)
    tmpfile = File.join(directory, 'tmpfile')
    File.rename(current_path, tmpfile)

    # output
    new_name = File.basename(current_path, '.*') + '.' + contact_sheet_format.to_s
    current_extenstion = File.extname(current_path).gsub('.', '')
    encoded_file = File.join(directory, new_name)

    # create cs
    cs = VCSRuby::ContactSheet.new tmpfile

    cs.initialize_filename(encoded_file)
    cs.format = contact_sheet_format
    cs.title = model.name
    cs.signature = nil
    cs.thumbnail_width = 320
    cs.timestamp = false
    cs.softshadow = false

    cs.build

    # without this lines processed video files will remain in cache folder
    self.filename[-current_extenstion.size..-1] = contact_sheet_format.to_s
    self.file.file[-current_extenstion.size..-1] = contact_sheet_format.to_s

    File.delete(tmpfile)
  end
end

  <%=  image_tag @video.video.contact_sheet.cs_url %>