Media

An ffmpeg or avconv wrapper

Installation

Install ffmpeg:

brew install ffmpeg --with-tools --with-libvpx --with-libvorbis --with-libtheora

Add this line to your application's Gemfile:

gem 'media'

And then execute:

$ bundle

Or install it yourself as:

$ gem install media

Usage

Convert:

conversion = Media.convert do
  options y: true

  # this example is slow, due to heavy network usage
  input 'http://www.google.com/images/srpr/logo3w.png' do
    options loop: 1, f: 'image2'
  end

  output '/path/to/example.webm' do
    options vcodec: 'libvpx', acodec: 'libvorbis', t: 4
    maps label('video'), label('audio')
    graph do
      chain do
        filter 'negate'
        filter 'hflip' do |f| # optional
          f.outputs 'video'
        end
      end
      chain do
        filter 'aevalsrc' do
          expressions 'sin(440*2*PI*t)'
          outputs 'audio'
        end
      end
    end
  end
end

conversion.call {|progress| p progress}

Probe:

probe = Media.probe('/path/to/example.mov') do
  options show_frames: true
end

probe.format
probe.streams
probe.streams('audio')
probe.frames   # requires show_frames option
probe.metadata # => Hash

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