Posted by Frank on 10/07/05 18:40

On Fri, 07 Oct 2005 14:42:16 +0100, in 'rec.video.desktop',
in article <Re: Cannot erase DVD-RW>,
Terry Pinnell <terrypin@dial.pipex.com> wrote:

>Frank <frank@nojunkmail.humanvalues.net> wrote:
>
>>On Thu, 06 Oct 2005 19:06:26 +0100, in 'rec.video.desktop',
>>in article <Re: Cannot erase DVD-RW>,
>>Terry Pinnell <terrypin@dial.pipex.com> wrote:
>>
>>>Just to let you know I've now registered IsoBuster, so we're hopefully
>>>in sync.
>>
>>Great.
>>
>>>I have barely begun to explore the program's features; looks daunting
>>>to me!
>>
>>Nah, IsoBuster is an easy one. Just right-click on everything!
>
>Hmm - I'm up for that, and that's normally my style of learning
>anyway, but I'd like *some* idea of the implications before I commit
>to a potentially 1-2 hour run!

I can fully appreciate that.

>Especially as several earlier attempts
>to cancel proved ineffective. In some cases I had to forcibly reboot
>with PC Reset button.

It was probably in extended error recovery mode and couldn't be
interrupted. This can happen with a variety of I/O devices, even hard
drives on occasion..

>And the meanings of some menu items aren't that
>clear, nor what level they are being applied.

The program expects you to be on expert on optical storage
technologies. Is that too much to ask? :)

>>>I did make a tentative attempt to try recovering disc #4, using
>>>the Extract Files facility, but unsuccessful.
>>
>>Did you try, on that particular disc, to go in and view its contents
>>on a sector by sector basis? I ask because, almost always, if you can
>>view the disc sector by sector, then the data is readable.
>
>I hadn't done so, no. But I've now retrieved it from bin and just
>tried that. The only understandable fragments of text (apart from lots
>of JPG filename) were like these:
>
>DVDVIDEO-VMG. (Presumably a format?)

Of course! It's the Video Manager, a standard part of the DVD-Video
specification.

The Unofficial DVD Specifications Guide - VMG Data Structures
http://www.dvd-replica.com/DVD/vmgifo.php

>CODEJAM (Suppliers of MoT)
>PICTTOTV (Previous name)
>OSTA Compressed Unicode (?)

The OSTA is the Optical Storage Technology Association, my dear lad.
Those are the friendly folks who are responsible for creating the
so-called standards for much of this stuff.

Optical Storage Technology Association
http://www.osta.org/

It's where you go to get the UDF specifications, for example.

OSTA Universal Disk Format Specifications
http://www.osta.org/specs/

You can read a short article on their site about DVD compatibility, a
subject close to the hearts of many.

OSTA DVDCC Article
http://www.osta.org/dvdcc/articles/compatibility.htm

>AuthoringWare Co. USA (Developers of MoT?)
>
>I also tried the Run commmand on a VOB file. It got to 17% and then
>hung. Clicking Cancel got me out to a message that a certain sector
>couldn't be read, and asking if I wanted to delete the file.
>
>Back to the bin!

Yes, sounds like a bad disc.

--
Frank, Independent Consultant, New York, NY
[Please remove 'nojunkmail.' from address to reply via e-mail.]
Read Frank's thoughts on HDV at http://www.humanvalues.net/hdv/

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