It has nothing to do with time. With permission it can be used immediately. Without permission it can never be used. Now, you have two things going for you.
1. Unless you are using the images to make money no company will care enough you are using them to do anything. They will also always warn you by mail asking you to stop using the images before suing you.
2. It is very easy to obtain permission to use the images. Company's usually have a pre made form letter and just want your promise you will not use the images for monetary gain. You just need to make the effort to contact them.
Added: While the above is good advice, it does not apply in the case of news, public affairs, or variety/talk shows. These shows are produced for public consumption and the information and topics contained in them are, for the most part, not the "intellectual property" of their producers and therefore not copyrightable. However, if you wish, you can certainly give your source public attribution when quoting, or synopsizing the content you gleaned from the broadcast.
Some torrents are illegal on the internet due to copyright issues. Sharing files on the internet that are copyright protected without the copyright holder's express permission is illegal.
You may not copy, alter, distribute, or perform/display works that are not your own, without permission from the copyright holder or an exemption in the law.
The two biggest issues in modern copyright are the increasing challenge of protecting your work from infringement, and the challenge of creating laws that are flexible enough to react to technological advances without being so vague as to be useless.
Copyright Act, 1957, and Copyright Rules, 1958, as amended.
It will be recognize as spam and sometime it could be deleted without reading it.
Generally, only pay sites such as iTunes and Amazon will be safe and legal.
First, You go on YOUTUBE and look it up. I dont think it is even Copyrighted.
Because copyright protection is automatic, nearly every new written work is protected. The best way to sell documents without encountering licensing issues is to ensure that every portion of it is your own original work.
copyright issues
It is a lawyer who specializes in intellectual property issues.
Arthur Levine has written: 'Global copyright issues in the secondary information industry' -- subject(s): Copyright, International Copyright
For most educators, a basic understanding of the exclusive rights conferred, fair use, the classroom exemptions, and the TEACH Act will cover most issues. The website linked below is a good place to start (US only).