paperclip-streamio-ffmpeg

Video Transcoder for Paperclip using streamio/streamio-ffmpeg.

Add this line to your application's Gemfile:

gem 'paperclip-streamio-ffmpeg'

And then execute:

$ bundle

Or install it yourself as:

$ gem install paperclip-streamio-ffmpeg

Edit your paperclip model:

# app/models/assets.rb

class Asset < ApplicationRecord
  # paperclip style
  has_attached_file :attachment,
                    processors: [:transcoder],
                    styles: {
                      thumb: {
                        geometry: "150x150>",
                        format: :jpeg,
                        screenshot: true,
                      },
                      preview: {
                        geometry: "1280x720>",
                        format: :mp4,
                      }
                    }

  # streamio-ffmpeg style
  has_attached_file :attachment2,
                    processors: [:transcoder],
                    styles: {
                      thumb: {
                        format: :jpeg,
                        convert_options: {
                          resolution: "150x150",
                          screenshot: true,
                          seek_time: 3,
                        }
                        transcoder_options: {
                          preserve_aspect_ratio: :width
                        }
                      },
                      preview: {
                        format: :mp4,
                        convert_options: {
                          resolution: "320x240",
                          video_codec: "libx264",
                          frame_rate: 10,
                          video_bitrate: 300,
                        }
                      }
                    }
end

geometry

If modifier is not specified, keep the aspect ratio.

original file: 1280x720, geometry: 640x480, output: 640x360`

If ! Or # is specified, resizing is done ignoring the aspect ratio.

original file: 1280x720, geometry: 640x480!, output: 640x480

If > is specified, it will be resized only if the resolution of the original file is greater than specified. The aspect ratio is kept.

original file: 1280x720, geometry: 640x480>,  output: 640x360
original file: 1280x720, geometry: 1920x1080>, output: 1280x720

If < is specified, it will be resized only if the resolution of the original file is less than specified. The aspect ratio is kept.

original file: 1280x720, geometry: 640x480<,  output: 1280x720
original file: 1280x720, geometry: 1920x1080<, output: 1920x1080

Please specify the resolution with convert_options instead of geometry if you want to perform more detailed conversion, such as keeping the aspect in accordance with the vertical width.

format

Output file format. If you do not specify a format, it will be output in the same format as the original file.

convert_options

Specify conversion option of streamio-ffmpeg. See more https://github.com/streamio/streamio-ffmpeg#transcoding .

If string is specified, its value becomes an argument to ffmpeg.

transcoder_options

Specify transcoder option of streamio-ffmpeg. See more https://github.com/streamio/streamio-ffmpeg#transcoding .

screenshot

Shorthand for convert_options: { screenshot: true, seek_time: 3 }

After checking out the repo, run bin/setup to install dependencies. Then, run rake test to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/daichirata/paperclip-streamio-ffmpeg.