scaling not work

[alimusavi67]

hi
i am using this gem for my video process and i want to scale my video to different size, but the output not change and all my version have same video size and resolution
this is my code:
`class MediaUploader < CarrierWave::Uploader::Base

encoding: utf-8

include CarrierWave::Video  # for your video processing
include CarrierWave::Video::Thumbnailer
include ::CarrierWave::Backgrounder::Delay
include CarrierWave::MimeTypes
require 'rubygems'
require 'streamio-ffmpeg'


process encode_video: [:mp4, audio_codec: "aac", custom: "-strict experimental -q:v 5 -preset slow -g 30 -movflags faststart",
  callbacks: { after_transcode: :set_success } ], :if => :video?

version :thumb do
  process thumbnail: [{format: 'png', quality: 10, size: 710, logger: Rails.logger}]
  def full_filename for_file
    png_name for_file, version_name
  end
end

version :mp4 do
  process encode_video: [:mp4, audio_codec: "aac", custom: "-strict experimental -q:v 5 -preset slow -g 30 -movflags faststart",
    callbacks: { after_transcode: :set_success } ], :if => :video?
  def full_filename for_file
    mp4_name for_file, version_name
  end
end
version :mid_mp4 do
  process encode_video: [:mp4, audio_codec: "aac", custom: "-vf scale=-1:360 -strict experimental -q:v 5 -preset slow -g 30 -movflags faststart",
    callbacks: { after_transcode: :set_success } ], :if => :video?
  def full_filename for_file
    mp4_name_mid for_file, version_name
  end
end`

[alimusavi67]

i already try ```
resolution: "640x360"
version :mp4 do
process encode_video: [:mp4, resolution: "640x360"
def full_filename for_file
mp4_name for_file, version_name
end
end

and of curse not worked.