erkie/paperclip-av-transcoder

Audio/Video Transcoder for Paperclip using FFMPEG/Avconv

Paperclip Transcoder

Audio/Video Transcoder for Paperclip using FFMPEG/Avconv.

This is a replacement for ( https://github.com/owahab/paperclip-ffmpeg ).

Status

Installation

Add this line to your application's Gemfile:

gem 'paperclip-av-transcoder'

And then execute:

$ bundle

Or install it yourself as:

$ gem install paperclip-av-transcoder

Usage

In your model:

# app/models/user.rb
class User < ActiveRecord::Base
  has_attached_file :avatar, :styles => {
    :medium => { :geometry => "640x480", :format => 'flv' },
    :thumb => { :geometry => "100x100#", :format => 'jpg', :time => 10 }
  }, :processors => [:transcoder]
end

This will produce:

1. A transcoded :medium FLV file with the requested dimensions if they will match the aspect ratio of the original file, otherwise, width will be maintained and height will be recalculated to keep the original aspect ration.
2. A screenshot :thumb with the requested dimensions regardless of the aspect ratio.

You may optionally add <attachment>_meta to your model and it will get populated with information about the processed video.

geometry

The geometry option has the following available modifiers:

1. '!' - Keep the same aspect of the image/video, but with the passed dimesion.
2. '#' - Pad the image/video.
3. '<' - Enlarge the image/video.
4. '>' - Shrink the image/video.

convert_options

The convert_options option lets you specify custom command line options to be sent to the ffmpeg command. The options are split into output and input, which define where in the pipeline they will be applied. Read more about which flags go where on the official documentation.

For example, sending in the -an flag would look like this:

has_attached_file :video, styles: {
  mobile: {
    format: "mp4",
    convert_options: {
      output: {
        an: nil # Remove audio track resulting in a silent movie, passing in nil results in `-an`,
        name: "value" # Results in `-name value` in the command line
      }
    }
  },
}

Contributing

1. Fork it ( https://github.com/ruby-av/paperclip-av-transcoder/fork )
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 a new Pull Request