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CarrierWave FFmpeg Uploader example
class VideoUploader < CarrierWave::Uploader::Base
include ::CarrierWave::Backgrounder::Delay
include CarrierWave::FFmpeg
RESOLUTIONS = [
{ version: :p1080, resolution: '1920x1080'},
{ version: :p720, resolution: '1280x720'}
]
# Choose what kind of storage to use for this uploader:
storage :file
# 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
"uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
end
before :store, :remember_cache_id
after :store, :delete_tmp_dir
# store! nil's the cache_id after it finishes so we need to remember it for deletion
def remember_cache_id(new_file)
@cache_id_was = cache_id
end
def delete_tmp_dir(new_file)
# make sure we don't delete other things accidentally by checking the name pattern
if @cache_id_was.present? && @cache_id_was =~ /\A[\d]{8}\-[\d]{4}\-[\d]+\-[\d]{4}\z/
FileUtils.rm_rf(File.join(root, cache_dir, @cache_id_was))
end
end
version :mp4 do
process encode: [:mp4]
def full_filename(for_file)
super.chomp(File.extname(super)) + '.mp4'
end
RESOLUTIONS.each do |resolution|
version resolution[:version], if: "bigger_than_#{resolution[:resolution]}?".to_sym
version resolution[:version] do
process encode: [:mp4, resolution: resolution[:resolution]]
end
end
end
version :webm do
process encode: [:webm]
def full_filename(for_file)
super.chomp(File.extname(super)) + '.webm'
end
RESOLUTIONS.each do |resolution|
version resolution[:version], if: "bigger_than_#{resolution[:resolution]}?".to_sym
version resolution[:version] do
process encode: [:webm, resolution: resolution[:resolution]]
end
end
end
version :ogv do
process encode: [:ogv]
def full_filename(for_file)
super.chomp(File.extname(super)) + '.ogv'
end
RESOLUTIONS.each do |resolution|
version resolution[:version], if: "bigger_than_#{resolution[:resolution]}?".to_sym
version resolution[:version] do
process encode: [:ogv, resolution: resolution[:resolution]]
end
end
end
RESOLUTIONS.each do |resolution|
define_method("bigger_than_#{resolution[:resolution]}?") do |argument|
movie(argument.path).resolution > resolution[:resolution] ? true : false
end
end
# Add a white list of extensions which are allowed to be uploaded.
# For images you might use something like this:
def extension_white_list
%w(mp4 mov avi mkv 3gp mpg mpeg)
end
end
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