ruby on rails 投稿一覧に動画を表示させたいが表示できない

posts/index.html.erb
<div class="main posts-index">
  <div class="container">
    <% @posts.each do |post| %>
      <div class="posts-index-item">
        <div class="post-left">
          <img src="<%= "/user_images/#{post.user.image_name}" %>">
        </div>
        <div class="post-right">
          <div class="post-user-name">
            <%= link_to(post.user.name, "/users/#{post.user.id}") %>
          </div>
          <div class="post-user-names">
            <%= link_to(post.content, "/posts/#{post.id}") %>
          </div>
          <div class="posts-user-names">
            <%= video_tag(post.video.to_s, "/posts/#{post.id}", height: "35%", width: "50%", controls: true, autobuffer: true )%>
          </div>

        </div>
      </div>
    <% end %>
  </div>
</div>

posts_controller.rb
    before_action :authenticate_user
    before_action :ensure_correct_user, {only: [:edit, :update, :destroy]}

  def index
    @posts = Post.all.order(created_at: :desc)
  end

  def show
    @post = Post.find_by(id: params[:id])
    @user = @post.user
    @post = Post.find(params[:id])
    @comments = @post.comments
    @comment = Comment.new
  end

  def new
      @post = Post.new

  end

  def create

    @post = Post.new(
      content: params[:content],
      user_id: @current_user.id,
     )
     if params[:post].present?
      @post.video = params[:post][:video]
     end

    if @post.save
      flash[:notice] = "投稿を作成しました"
     redirect_to("/posts/index")
    else
     render("posts/new")

    end
  end

 def edit
  @post = Post.find_by(id: params[:id])
 end

 def update
 @post = Post.find_by(id: params[:id])
 @post.content = params[:content]
 if @post.save
   flash[:notice] = "投稿を編集しました"
   redirect_to("/posts/index")
 else
   render("posts/edit")
 end
 end

 def destroy
   @post = Post.find_by(id: params[:id])
   @post.destroy
   flash[:notice] = "投稿を削除しました"
   redirect_to("/posts/index")
 end

 def ensure_correct_user
     @post = Post.find_by(id: params[:id])
     if @post.user_id != @current_user.id
         flash[:notice] = "権限がありません"
         redirect_to("/posts/index")
     end
 end

end