Patent ID: 8611729

Claim:
A conversion apparatus for converting a media file into different formats, comprising: conversion means for converting the media file between a first format and a second format; wherein both the first format and the second format have a header, a body, and a footer in the media file, wherein the header of the first format has the same form as the header of the second format, and the footer of the first format has the same form as the footer of the second format, wherein video data, audio data and metadata of a frame unit are placed in a multiplexed state in the body of the media file of the first format; and wherein when the media file of the first format is converted into the second format, only the video data is collectively placed in the body of a video file of the second format, and only the audio data is collectively placed in the body of an audio file of the second format, and wherein the conversion means includes: metadata of frame unit extracting means for extracting metadata of frame unit from the body, metadata file of frame unit generating means for generating metadata file of frame unit in which the metadata of frame unit are placed, metadata of file unit extracting means for extracting metadata of file unit from the header; and metadata file of file unit generating means for generating metadata file of file unit in which said metadata of file unit are placed.