Media

An ffmpeg or avconv wrapper

Installation

Install ffmpeg:

brew install ffmpeg

Add this line to your application's Gemfile:

gem 'media'

And then execute:

$ bundle

Or install it yourself as:

$ gem install media

Usage

conversion = Media.convert do
  options y: true

  input 'http://www.google.com/images/srpr/logo3w.png' do
    options loop: 1, f: 'image2'
  end

  output '/path/to/test2.webm' do
    options vcodec: 'libvpx', acodec: 'libvorbis', t: 4
    maps label('video'), label('audio')
    graph do
      chain do
        filter 'negate'
        filter 'hflip' do
          outputs 'video'
        end
      end
      chain do
        filter 'aevalsrc' do
          arguments 'sin(440*2*PI*t)' => true
          outputs 'audio'
        end
      end
    end
  end
end

conversion.call {|progress| p progress}

Outputs:

ffmpeg -v info -y -loop 1 -f image2 -i http://www.google.com/images/srpr/logo3w.png -vcodec libvpx -acodec libvorbis -t 4 -map [video] -map [audio] -filter_complex negate, hflip [video]; aevalsrc=sin(440*2*PI*t) [audio] /path/to/test2.webm

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request