Methods

Class Public methods

accept?(blob)

Source: 

# File activestorage/lib/active_storage/previewer/video_previewer.rb, line 6
def accept?(blob)
  blob.video? && ffmpeg_exists?
end

ffmpeg_exists?()

Source: 

# File activestorage/lib/active_storage/previewer/video_previewer.rb, line 10
def ffmpeg_exists?
  return @ffmpeg_exists if defined?(@ffmpeg_exists)

  @ffmpeg_exists = system(ffmpeg_path, "-version", out: File::NULL, err: File::NULL)
end

ffmpeg_path()

Source: 

# File activestorage/lib/active_storage/previewer/video_previewer.rb, line 16
def ffmpeg_path
  ActiveStorage.paths[:ffmpeg] || "ffmpeg"
end

Instance Public methods

preview()

Source: 

# File activestorage/lib/active_storage/previewer/video_previewer.rb, line 21
def preview
  download_blob_to_tempfile do |input|
    draw_relevant_frame_from input do |output|
      yield io: output, filename: "#{blob.filename.base}.jpg", content_type: "image/jpeg"
    end
  end
end