Posted 29 Jul 2009 — by admin
Category Linux
The format is as follows
ffmpeg -i <input file> -ss <starting point> -t <length of capture> <output file>
ffmpeg -i Input_File.flv -ss 00:00:00 -t 00:10:00 Output_Filename.flv
http://www.surfthedream.com.au/blog/Archives/november-2008/how-to-split-a-movie-file-into-multiple-parts
To make child attributes accessible to your model through a nested forms (Rails 2.3) you’ll need to add the “#{child_class}_attributes” to the attr_accessible method in your parent class. If you don’t use attr_accessible in your parent model (you would do this to restrict certain attributes to be accessed via a web form) then you should be all set.
Below is an example where User has_one Profile with the favorite_color attribute being set/updated in the nested form.
class User < ActiveRecord::Base
has_one :profile #child class
accepts_nested_attributes_for :profile
attr_accessible :profile_attributes # the format is the child_class followed by the "_attributes"
end
And the form would like this...
<% form_for @current_user do |f| %>
<% f.fields_for :profile do |profile| %>
<%= profile.text_field :favorite_color %>
<% end %>
<% end %>
Just for reference…
class Member < ActiveRecord::Base
has_one :member_profile
accepts_nested_attributes_for :member_profile
end
<% form_for @member do |f| -%>
<%= f.label :fullname %> <%= f.text_field :fullname %>
<% f.fields_for :member_profile, @member.member_profile do |member_profile|%>
<%= member_profile.label :about %><%= member_profile.text_field :about %>
<%= member_profile.label :favorite_color %><%= member_profile.text_field :favorite_color %>
<% end %>
In the parent class place the following code
has_many :posts, :dependent => :destroy
This used to be accomplished with
has_many :posts, :dependent=>true
Check out the Rails docs for more information http://api.rubyonrails.org/classes/ActiveRecord/Associations/ClassMethods.html
If you create a module in the lib/ directory of your Rails application you won’t have access to those methods in your views. If you don’t want to put those methods in a helper file, you need to add a method to your module that makes them available for you views like so…
#in lib/my_module_name.rb
module MyModuleName
def my_method_for_views
#logic...
end
def self.included(base)
base.send :helper_method, :my_method_for_views if base.respond_to? :helper_method
end
end
Bing is now serving up search results inside of Facebook. When you use the search bar on the top right, along with potential friends, a Bing result set will be populated on the right hand sidebar. Here’s a screen shot.

bing on fb
Bing is a Microsoft search engine.