[openbeos] Re: ISO-9660 BFS filesystem extension
- From: "john 'soco' robinson" <soco@xxxxxxxxx>
- To: <openbeos@xxxxxxxxxxxxx>
- Date: Thu, 10 Jan 2002 03:27:54 +0100
> that's a personal opinion).. but most DVD decoders don't even use it. a
DVD
> usually is read as a raw bit stream from the device. it's quite
interesting
> reading, don't member the full details, but I'm not even sure what udf on
a
> dvd is used for.. prolly optional stuff.. /shrug
not true. it's required of all DVD players to read basic UDF.
it's part of the standard.
you can check out section 6.9 of the UDF2.00 specs (it's probably
a different number in other versions)
"DVD-ROM discs shall be mastered with the UDF file system"
...
"DVD-Video players expect media in UDF 1.02 format."
...
"A DVD player shall only support UDF and not ISO 9660."
more importantly on this discussion...
"Note: The disc may also include the ISO 9660 file system. If the disc
contains both UDF and ISO 9660 file systems it shall be known as a UDF
Bridge disc. This UDF Bridge disc will allow playing DVD-ROM media in
computers which may only support ISO 9660. As UDF computer implementations
are provided, the need for ISO 9660 will disappear, and future discs should
contain only UDF."
-soco
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