Method and apparatus for recording and reproducing video data, and information storage medium in which video data is recorded by the same

Abstract

A method of recording and reproducing video data is provided. The method of recording video data in an information storage medium includes the steps of (a) decoding originally encoded video data, (b) re-encoding the decoded video data in a different way to the originally encoded video data, (c) generating video transform information which is to be referred to for decoding the video data into its original state, and (d) recording the generated video transform information and the re-encoded video data in the information storage medium. Accordingly, the video data can be properly reproduced even if it is re-encoded in a different way to the originally encoded video data.

1 . A method of recording video data in an information storage medium, the method comprising:
 receiving first video data;   generating second video data by encoding and transforming a data format of the first video data;   generating video transform information on the first video data; and   recording the second video data and the video transform information, wherein the video transform information comprises resolution information and aspect ratio information on the first video data.   
   
   
       2 . The method of  claim 1 , wherein the video transform information is included in a program map table (PMT) packet.