[mythtv-users] Large files burned with mytharchive

[Mario Limonciello]

John,

The issue comes up when doing an archive in native format.  I record several
HD shows, and see it silly to recompress them to DVD formats, when I will
only ever watch them on a HiDef set.  Native format archives aren't passed
through DVD Author.

Mario

On 10/25/06, John Drescher <drescherjm at gmail.com> wrote:
>
> On 10/25/06, Mario Limonciello <mario.mailing at gmail.com> wrote:
> >
> > To follow up with this a bit:
> >
> > I have come across many forums where people have indicated that the
> > maximum file size for ISO9660 Level 2 is 2GB.  I have also come across some
> > information that for ISO9660 Level 3, its 4GB.
> > I couldn't find a definitive site saying both of these in one place, but
> > a friend of mine came across this small snippet:
> >
> > IS09660 has a limitation of 2GB at Level 2 ISO9660 and 4GB at level 3,
> > > currently Nero and other burning roms at this time dont support ISO9660
> > > level 3 - The only way to get your files > 2Gb to DVD is using UDF
> > > filesystem on you discs, but most DVD players dont support UDF - Now,
> > > another problem that is being presented in this situation is that Nero and
> > > many other linux apps is there is also a 2GB file size limitation
> > > implemented deep within the programming implementations of libc (this
> > > changed in newer 64-bit sources) that limits the file size to 2GB (more
> > > specificly 2^31 - 1) there is a workaround to implement LFS into the libc
> > > kernal source which the limit becomes 2^63 or 8TB, I can send you a link to
> > > more on that, but from what I can tell it is really not worth it...you might
> > > try to find a way to do what the dvd makers have been implementing to use
> > > ISO9660 level 2, split your video into VOB's at 1GB because that is the
> > > "roundest" file size below below the 2^31 -1 limit
> > >
> >
> > So this being the case, I see two possible solutions.
> >
> > 1) MythArchive needs to learn how to start splitting files up into 1 GB
> > chunks.  Create a patch to start doing so.
> > 2) MythArchive needs to learn how to write UDF.  I haven't even ever
> > written a UDF disk myself, so I'll have to see how readily feasible this is.
> >
>
>
> This has nothing to do with the size of the .ISO but has to do with the
> size of the files inside the iso. Since mytharchive uses dvdauthor to
> create a valid iso (with no files larger than 2GB) I dont think this is your
> problem.
>
> John
>
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