[openbeos] Re: ISO-9660 BFS filesystem extension
- From: "Jonathan Tarbox" <jtarbox@xxxxxxxxxxxxx>
- To: <openbeos@xxxxxxxxxxxxx>
- Date: Wed, 9 Jan 2002 20:51:17 -0600
Well.. whether or not UDF is used on the disc, the DVD decoding is done as a
bit stream.. I have seen the source code, read a little of the official
standards book (wow, two pages worth of it and I got a headache) Just going
by what I saw.. Terminator running with overlay support within BeOS
-jtarbox
> > 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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