FILE SYSTEM

Directory Structure

File directory is based on ISO 9660 and the micro Universal Disk Format Specification (M-UDF).

The latest UDF specification (November 3, 1995) can be obtained from:

        Optical Storage Technology Association
        311 East Carrillo Street
        Santa Barbara, CA 93101
        USA

        Voice:  +1 805 963 3853
        Fax:    +1 805 962 1541
        E-mail: osta@aol.com

Example file structure:

Root ---------------------------------------------------
      |                               |              |
    Video_TS (directory)              Audio_TS      Provider defined
      |  
      |
      |
      | - Video_TS.INF  (Video Manager Information)
      | - Video_TS.VOB  (Video Manager Menu)
      | - Video_TS.BUP  (Video Manager Information)
      |
      | - TITLE_A.INF   (Video Title Set Information)
      | - TITLE_A0.INF   (Video Title Set Menu)
      | - TITLE_A1.VOB  (Video Title Set Title)
      | - TITLE_A2.VOB  (Video Title Set Title)
      | - TITLE_A.BUP   (Video Title Set Information)

Restrictions:

A maximum of 99 tiles may be on one DVD disc.

A maximum of 10 files per VTS

A maximum of 1 GByte per file

Layout of Volume:



Lead-in     Data Recorded Area         Lead Out
IIIIIII     DDDDDDDDDDDDDDDDDD         OOOOOOOO

            ISO9660&M-UDF
            File 0
            File 1

Disc Type and Capacity

	Single layer Single sided (SL/SS)	Dual layer Single sided (DL/SS)	Single layer Double sided (SL/DS)	Dual Layer Double sided (DL/DS)
12 cm diameter disc	4.7 GB	8.5 GB	9.4 GB	17 GB
8 cm diameter disc	1.4 GB	2.6 GB	2.9 GB	5.3 GB

Recordable time on a disc scenarios:

				Minutes
Application	Stream type	Total stream(s) rate (mbit/sec)	Avg rate (mbit/sec)	SL/SS	DL/SS	SL/DS	DL/DS
Movie			4.8	130	236	259	472
	Video	3.5
	Audio (AC-3, 3 languages)	1.152
	Sub-picture
Karaoke			4.0	155	282	310	564
	Video	3.5
	Audio (AC-3, 1 language)	0.384
	Sub-picture
Video Clip A			5.2	120	218	340	436
	Video	3.5
	Audio (2 ch. PCM)	1.536
	Sub-picture
Video Clip B			8.8	71	129	142	258
	Video	7.0
	Audio (2 ch. PCM)	1.536
	Sub-picture
Video Clip C			8.4	75	136	149	272
	Video	7.0
	Audio (2 ch. PCM)	1.536
	Sub-picture