Text 21697, 105 rader
Skriven 2006-09-30 07:12:00 av George Vandervort (1:382/8)
  Kommentar till text 21673 av Ed Vance (1:123/140)
Ärende: UDF????????
===================
Hello Ed!

Friday September 29 2006 21:03, ED VANCE wrote to JEFF GUERDAT:

 EV> Jeff,
 EV>
 EV> I've noticed You and some others using the abbreviation UDF when
 EV> talking about burning CD-R's.
 EV>
 EV> What is UDF and what should I know about it?
 EV>
 EV> Thanks.

UDF could stand for "Un-identified Drive Failure"
or
"Un-recoverable Dvd Failure"  <grin>

UDF stands for "Universal Disk Format"

Here is a brief explanation..

=== Cut ===

Brief introduction to DVD / CD format

The hard drive format is consusing enough: in PC alone there are FAT, FAT32,
and NTFS format, then MAC have a complete different format; while DVD / CD
format is much simpler, there are still a few different file systems, so how to
choose the right DVD / CD format to ensure greatest compatibility by other DVD
/ CD drive or DVD players become a problem for amateurs. The most widely used
format is ISO 9660, UDF file system is also popular in DVD discs, MPV is the
latest file system just appearing in the market and are gaining popularity
gradually. (A file system is a structure that organizes large numbers of files
on some sort of storage medium such as hard disk drive, CD, and DVD)

ISO vs. UDF

ISO 9660 have been used as the main CD format for many years now. Most of the
CD nowsdays still use this format, the benefit of this format is that it is
readable by all CD drive or CD player, and can be shared between PC and MAC.

Universal Disk Format (UDF) is a newer file system for CD and DVDdeveloped and
managed by the Optical Storage Technology Association as the successor to the
ISO 9660 standard. UDF overcomes limitations of ISO 9660 and redirectors such
as CDFS. UDF is used to ensure compatibility across platforms, as well as among
various CD and DVD applications. UDF is required for DVDs, and is used by DVD
to contain MPEG audio/video streams, UDF is also used by CD-R and CD-RW in a
process called packet writing that makes CD writing more efficient in terms of
the time and disk space required.


Different revisions of UDF

UDF have many different revisions, from revision 1.0, 1.02, 1.5, 2.0, to 2.01,
and revision 1.02 is specified for use by DVD drives, difference between these
revisions are available from OSTA website.

UDF 1.02 is the 'most' compatible file system. When you choose to creat a DVD
to play video and choose UDF/ISO, UDF 1.02 will be used ( by the burning
software ) to ensure best compatibility.

But if you choose DVD-Video mode when you burn a DVD, the default format is UDF
1.5 format, not 1.02, which might cause it not readable by other DVD drives and
DVD players.





MPV
MPV is the lasted file system developed and promoted by OSTA. MPV enables PCs
and consumer electronics products like DVD players to exchange and playback
collections of digital photos, video, and music, it supports browsing, playing,
and printing multimedia collections. For more info, check out OSTA's website.

Conclusion
If you are creating DVD / CD movie or music for sharing with friends, so you 'd
better stick to the most comptiable format: UDF 1.02. If you are just back up
the DVD or files, then you can consider other advanced files systems like
UDF2.0 or even MPV

=== Cut ===


 EV>
 EV>
 EV>  * SLMR 2.1a #T348 * Why does "slow down" and "slow up" mean the same
 EV> thing?
 EV> -+- Platinum Xpress/Win/WINServer v3.0pr5
 EV>  + Origin: Try Our Web Based QWK: DOCSPLACE.ORG (1:123/140)


Regards,
George Vandervort
InterNet EMail: georgev@austin.rr.com
Tech Support: http://home.austin.rr.com/llr/spa/

'Using yesterday's software to create tomorrow's problems today'


...That's not a bug, it's an undocumented feature.

... What do you mean, "your Birth Certificate Expired?"
--- FMail/Win32 1.60
 * Origin: Bill Gates does my Windows (FidoNet 1:382/8)