Ruby on Rails

Check that your Rails app knows the real path to ffmpeg. In at least
one of my apps, I have needed to provide a root-relative path to
ffmpeg in order to have any conversion work.

Walter

On Oct 1, 2010, at 1:00 PM, Christian Fazzini wrote:

> I tried:
>
> module Paperclip
> class VideoThumbnail < Processor
>
> attr_accessor :time_offset, :geometry, :whiny
>
> def initialize(file, options = {}, attachment = nil)
> super
> @time_offset = options[:time_offset] || '-4'
> 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
>
> puts 'wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww'
> puts @file.path
>
> cmd = <<-end_command
> ffmpeg -i #{@file.path} -f flv -s 320x240 ~/Downloads/foobar/
> q.flv
> end_command
> cmd.gsub!(/\s+/, " ")
>
> begin
> success = Paperclip.run('ffmpeg', cmd)
> rescue PaperclipCommandLineError
> raise PaperclipError, "There was an error processing the
> thumbnail for #{@basename}" if whiny
> end
> dst
> end
> end
> end
>
> console reports:
>
> [paperclip] ffmpeg ' ffmpeg -i /var/folders/uL/uL0bYOOZEZaJH5E+BmDJVE
> ++
> +TI/-Tmp-/stream,1547,1.mpeg -f flv -s 320x240 ~/Downloads/foobar/
> q.flv ' 2>/dev/null
>
>
> On Oct 1, 10:13 pm, radhames brito <rbri...@gmail.com> wrote:
>> On Fri, Oct 1, 2010 at 9:38 AM, Christian Fazzini <
>>
>> christian.fazz...@gmail.com> wrote:
>>> Im using a customs processor to run ffmpeg on a video to create a
>>> thumbnail.
>>
>> this here is how i do it
>>
>> def create_thumbnail
>> jpg = File.join(File.dirname(vidfile.path), "#{id}.jpg")
>> File.open(jpg, 'w')
>> command = <<-end_command
>> ffmpeg -itsoffset -4 -i #{ vidfile.path } -y -vcodec mjpeg -
>> vframes 1
>> -an -f rawvideo -s 160x120 #{ jpg }
>> end_command
>> command.gsub!(/\s+/, " ")
>> end
>>
>> you have to manually delete the file on destroy since paperclip is
>> only
>> aware of the file i uploaded which it the video file and will not
>> delete the
>> jpg file.
>>
>> File.delete(@vidfile.path.gsub(/flv/,"jpg"))
>>
>> also you have to delete the original, and update the db entry
>>
>> def set_new_filename
>> File.delete(vidfile.path)
>> update_attribute(:vidfile_file_name, "#{id}.flv")
>> update_attribute(:vidfile_thumb, "#{id}.jpg")
>> end
>>
>> i also set everything in an starling worker
>>
>> ConvertWorker.async_convert_video(:file_path => vidfile.path)
>
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