Patent ID: 8326128

Claim:
A conversion apparatus for converting media file data including a header, a body, and a footer, comprising: conversion means for converting a respective one file from a first file of a first format, which includes first data being video data and second data being audio data placed in a multiplexed state in the body, and a second file of a second format, which includes the first data or the second data collectively placed in the body, into another file of the two files, wherein the second file of the second format includes all of the first data collectively placed in a first part of the body and includes all the second data collectively placed in a second part of the body, the first data that is collectively placed on the first part of the body of the second file including a plurality of frames of the first data, and wherein the first part of the body includes data of a plurality of frames but no second data, and wherein the second part of the body includes data of a plurality of frames but no first data, and wherein the second file of the second format includes a first metadata file and second metadata file, the first metadata file having metadata in file units, and the second metadata file having metadata in frame units, and the second metadata file having metadata of frame units collectively placed in the second metadata file.