Legal analysis: copyright is needed. Adapters and filmmakers of films must be authorized by the original author, who can transfer the rights of adaptation, shooting, translation and broadcasting of his works to other subjects for many times without special restrictions and get paid. Plagiarism without buying copyright is definitely infringement.

Legal basis: Article 52 of the Copyright Law of People's Republic of China (PRC) has one of the following infringements, and shall bear civil liabilities such as stopping the infringement, eliminating the influence, making an apology and compensating for losses according to the circumstances:

(1) publishing his work without the permission of the copyright owner;

(2) publishing a work created in cooperation with others as a work created by oneself without the permission of a co-author;

(three) did not participate in the creation, in order to seek personal fame and fortune, signed other people's works;

(4) distorting or tampering with other people's works; (5) Plagiarizing other people's works;

(6) Using a work by means of exhibition, filming or adaptation, translation or annotation without the permission of the copyright owner. Unless otherwise provided for in this law;

(seven) the use of another person's work, which should be paid but not paid;

(8) Renting works or audio-visual products without the permission of the copyright owner or copyright-related obligee of film works and works created by similar film production methods, computer software and audio-visual products, except as otherwise provided by this Law;

(9) Using the layout design of books and periodicals published by publishers without their permission;

(10) Live broadcast or public dissemination of a live performance or recording of a performance without the permission of the performer;

(eleven) other acts of infringement of copyright and copyright-related rights and interests.