Section 76.1904 - Encoding rules for defined business models(a) Commercial audiovisual content delivered as unencrypted broadcast television shall not be encoded so as to prevent or limit copying thereof by covered products or, to constrain the resolution of the image when output from a covered product.(b) Except for a specific determination made by the Commission pursuant to a petition with respect to a defined business model other than unencrypted broadcast television, or an undefined business model subject to the procedures set forth in § 76.1906 : (1) Commercial audiovisual content shall not be encoded so as to prevent or limit copying thereof except as follows: (i) To prevent or limit copying of video-on-demand or pay-per-view transmissions, subject to the requirements of paragraph (b)(2) of this section; and(ii) To prevent or limit copying, other than first generation of copies, of pay television transmissions, non-premium subscription television, and free conditional access delivery transmissions; and(2) With respect to any commercial audiovisual content delivered or transmitted in form of a video-on-demand or pay-per-view transmission, a covered entity shall not encode such content so as to prevent a covered product, without further authorization, from pausing such content up to 90 minutes from initial transmission by the covered entity (e.g., frame-by-frame, minute-by-minute, megabyte by megabyte).