FILE GENERATING METHOD AND FILE GENERATING APPARATUS
A file generating method according to one aspect of the present disclosure is a file generating method for generating an MP4 file, the file generating method including: step S 11 of acquiring an original file made in a file format different from MP4; step S 12 of acquiring a difference file including data that is not included in the original file; step S 13 of acquiring a procedure file indicating a procedure for generating the MP4 file; and step S 14 of generating the MP4 file by combining the data included in the difference file and data included in the original file in accordance with the procedure indicated in the procedure file.
1 . A recording medium in which are recorded:
an original file made in a file format different from MP4;
a difference file including data that is not included in the original file, and included in the MP4 file to be generated; and
a procedure file indicating a procedure for generating the MP4 file.
2 . The recording medium according to claim 1 , wherein
the original file is made in a file format of MPEG2-TS.
3 . The recording medium according to claim 1 , wherein
the procedure file describes ranges of a plurality of respective sections included in the difference file, and ranges of a plurality of respective sections included in the original file, so that the ranges of the sections included in the difference file and the ranges of the sections included in the original file are arranged alternately.
4 . The recording medium according to claim 3 , wherein
the ranges of the plurality of respective sections included in the difference file are described in the procedure file in data size, and
the ranges of the plurality of respective sections included in the original file are described in the procedure file in starting position and data size of the sections.
5 . The recording medium according to claim 1 , wherein
the data size of the MP4 file is described in the procedure file.
6 . The recording medium according to claim 1 , wherein
an attribute of the MP4 file is described in the procedure file.
7 . The recording medium according to claim 1 , wherein
a buffer size required for playback of the MP4 file is described in the procedure file.
8 . The recording medium according to claim 1 , wherein
a first file name, which is a name of the original file, and a second file name, which is a name of the difference file, are described in the procedure file.