Re: [gentoo-user] mkisofs: layout

[Andrey Moshbear]

On Mon, Jan 30, 2012 at 15:06, Joerg Schilling
<Joerg.Schilling@××××××××××××××××.de> wrote:
> Andrey Moshbear <andrey.vul@×××××.com> wrote:
>
>> On Mon, Jan 30, 2012 at 05:02, Joerg Schilling
>> <Joerg.Schilling@××××××××××××××××.de> wrote:
>> > Andrey Moshbear <andrey.vul@×××××.com> wrote:
>> >
>> >> If there a way to force mkisofs to add padding after sector N so that
>> >> the resultin image can be burned as a double layer with no files that
>> >> reside partially on one and partially on the other layer?
>> >
>> > Did you read the mkisofs man page?
>>
>> I did. The closest thing that was available was -dvd-video, but it
>> pads all files, not just ones around a layerbreak.
>> -pad only pads the end of the image.
>
> This is not correct.....
>
> Mkisofs honors the disk layout defined by the IFO file.

Does there exist an IFO system that doesn't rely on VIDEO_TS and
DVD-Video, i.e. a DVD-ROM analog thereof?

>
>> > Why do you believe there is a problem?
>> >
>>
>> Cdrecord burns DVD+-R DL in PTP mode, so it's going to be inefficient
>> in terms of I/O if there's a file that's halfway on
>> one layer and halfway on the other. Were there padding or a dummy
>> file, this would not be an issue.
>>
>> Hence, the asking about introducing padding around a layerbreak area.
>
> You are missunderstanding things:
>
> The track recording direction is defined by the pressed pree-groove and cannot
> be changed.
>
> If you are copying DVDs, you need to call cdrecord -v -atip or similar in order
> to retrieve the layerbreak value of the original disk. This value needs to be
> given with the driveropts=layerbreak=xxx option when writing DVD+R/DL.
>
> If someone can tell me how to read the layerbreak value from the IFO file, this
> coule be done automatically....
>

I'm not copying. I'm making a DVD DL iso from a collection of files in
a folder. There's no ripping from
silver disc in any stage of the process.