Ruby on Rails

Ok I've gotten it to work. For everyone that is interested or devs who
stumble across:

Model class:
has_attached_file :media,
:styles => { :small => '94x58#',
:medium => '188x116#',
:large => '376x232#' },
:url => '/assets/artists/:artist_id/
videos/:id/:style.:extension',
:path => ':rails_root/public/assets/
artists/:artist_id/videos/:id/:style.:extension',
:processors => [:video_thumbnail]

------------------
/lib/paperclip_processors/video_thumbnail.rb:

module Paperclip
class VideoThumbnail < Processor

attr_accessor :geometry, :whiny

def initialize(file, options = {}, attachment = nil)
super
@file = file

unless options[:geometry].nil? || (@geometry =
Geometry.parse(options[:geometry])).nil?
@geometry.width = (@geometry.width / 2.0).floor * 2.0
@geometry.height = (@geometry.height / 2.0).floor * 2.0
@geometry.modifier = ''
end
@whiny = options[:whiny].nil? ? true : options[:whiny]
@basename = File.basename(file.path, File.extname(file.path))
end

def make

dst = Tempfile.new([ @basename, 'jpg' ].compact.join("."))
dst.binmode

cmd = "ffmpeg -itsoffset -4 -i #{@file.path} -y -vcodec mjpeg -
vframes 1 -an -f rawvideo -s #{geometry.to_s}
#{File.expand_path(dst.path)}"

begin
success = Paperclip.run(cmd)
rescue PaperclipCommandLineError
raise PaperclipError, "There was an error processing the
thumbnail for #{@basename}" if whiny
end
dst
end
end
end

------------------
/config/initializers/paperclip.rb

Paperclip.interpolates :artist_id do |attachment, style|
attachment.instance.artist.id
end

# Ensures that files have the proper extensions. i.e. thumbnails with
jpgs
Paperclip.interpolates :extension do |attachment, style_name|
case attachment.instance.class.to_s
when "Video"
if style_name.to_s == 'original'
'flv'
else
'jpg'
end
when "Audio"
if style_name.to_s == 'original'
'mp3'
end
else
File.extname(attachment.original_filename).gsub(/^\.+/, "")
end
end

# Path to ffmpeg
Paperclip.options[:command_path] = "/opt/local/bin"

--------------------

Hope this helps somebody

On Oct 2, 4:44 pm, Christian Fazzini <christian.fazz...@gmail.com>
wrote:
> I guess what I am asking is. If my app allows users to upload content,
> which uses ffmpeg, and takes a while decode audio/video, will this
> trigger the workers at heroku automatically? Therefore, I don't need
> to use a workling/startling?
>
> Or do I still need to implement a startling/workling for this to
> prevent the app from 'hanging'?
>
> On Oct 2, 4:22 pm, Christian Fazzini <christian.fazz...@gmail.com>
> wrote:
>
> > Hi Radhames, ok, then I will definitely need to use a workling and a
> > startling for this. Since my users are the ones uploading. By the way,
> > in Heroku hosting (http://heroku.com/pricing), a workling would be a
> > worker right? So whenever I implement a workling in my app, it would
> > trigger the workling in Heroku? Am I understanding this right?
>
> > Let me know when you get your example up. Am very eager to have a look
> > at it
>
> > On Oct 2, 6:05 am, radhames brito <rbri...@gmail.com> wrote:
>
> > > On Fri, Oct 1, 2010 at 5:29 PM, Christian Fazzini <
>
> > > christian.fazz...@gmail.com> wrote:
> > > > Radhames, what do you think? I am guessing the article at
>
> > > >http://www.google.com/url?sa=D&q=http://thewebfellas.com/blog/2009/2/...
> > > > assumes that the uploader would be the admin, so there is no need for
> > > > startling or a workling?
>
> > > > But if the app allows users to upload, then a startling/workling
> > > > approach is needed since ffmpeg takes a while to process uploaded
> > > > files?
>
> > > Yes that is right, if only the admin will upload files there is no need for
> > > starling/working.
>
> > > I dont see anything wrong in doing things with a method in the model like i
> > > told you the first time.
>
>

--
You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group.
To post to this group, send email to rubyonrails-talk@googlegroups.com.
To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.