使用paperclip av-transcoder添加视频

Question

好的，所以我尝试了一段时间，我无法让它发挥作用。所以我开始新的，仍然在努力解决这个问题。我上传图片没问题。但由于某种原因，我在尝试上传视频时遇到错误。我安装了ffmpeg并安装了最新的回形针av-transcoder。

这是我得到的错误

这是我的帖子模型

class Post < ActiveRecord::Base
 belongs_to :user
 has_attached_file :video, styles: {
    :medium => {
      :geometry => "640x480",
      :format => 'mp4'
    },
    :thumb => { :geometry => "160x120", :format => 'jpeg', :time => 10}
}, :processors => [:transcoder]
 validates_attachment_content_type :video, content_type: /\Avideo\/.*\Z/
end

这是我的帖子控制器

def index
@posts = Post.all.order("created_at DESC")
end

def show
end

def new
@post = current_user.posts.build
end

def edit
end

def create
@post = current_user.posts.build(post_params)
if @post.save
  redirect_to @post, notice: 'Post was successfully created.'
else
  render :new
end
end

def update
if @post.update(post_params)
  redirect_to @post, notice: 'Post was successfully updated.'
else
  render :edit
end
end

def destroy
@post.destroy
redirect_to posts_url
end

private
# Use callbacks to share common setup or constraints between actions.
def set_post
  @post = Post.find_by(id: params[:id])
end

def correct_user
  @post = current_user.posts.find_by(id: params[:id])
  redirect_to posts_path, notice: "Not authorized to edit this post" if     @post.nil?
end

# Never trust parameters from the scary internet, only allow the white list through.
def post_params
  params.require(:post).permit(:description, :image, :video)
end

def bscenes_params
    params.require(:post).permit(:video)
end
end

这是我在节目页面上使用的标签

<%= video_tag bscene.video.url(:medium), controls: true, style: "max-width: 100%;" %>

我一步一步地按照这个网站上的步骤进行操作 http://alloffices.io/posts/heroku-s3-paperclip-av-transcoder-for-video-uploads

不知道为什么我会得到NamError。任何帮助都会有很多帮助

当我拿走＆＃34; bscene＆＃34;从标签和控制器我然后在上传时得到它。