12 Jan
2017
12 Jan
'17
2:42 a.m.
Just to add my twopence worth here...
Unfortunately it's not the case that all servers can read NTFS. Almost
all can, but I've encountered some that can't. And one was in the past
month so it remains a current issue. I'm afraid I can't remember server
make/model.
I would also warn against Paragon's EXT driver on Mac. I've had some
terrible problems using it and now completely abandoned it. It worked
fine for it's stated purpose but caused problems with Mac format drives
over USB3. It was responsible for completely borking my RAID among other
horrors.
Totally agree with CJ about following the standard. This is the whole
point of DCP - if a DCP plays in one place, it should play anywhere -
that's the reason for having a public standard. Anything else and you're
asking for a panicked phone call the one day, the one time when you
least need it.
I keep a cheap linux box under my desk and it's the only thing I ever
use to load up drives. I work on Macs mostly and then copy over the
network. That Linux box cost £100 and is worth it's weight in gold.
However, it's a bugbear of mine that, now that DCP-o-matic has put the
power to films to screen back in the hands of filmmakers and cinemas,
without exorbitant post house rates, the one sticking point now seems to
be getting the damn thing on a drive! It's one of the few remaining
barriers to full democratisation of this technology.
Jim
On 11/01/2017 09:33, cjflynn--- via DCPomatic wrote:
Manuel, hello
I understand that NTFS often works in many servers (and that if you
are going to use NTSF that best results come if it is formatted with
MRB). But it doesn’t have to. As DCPs move toward SMPTE Compliance,
new server software and firmware is released more often and is more
complicated. A new update for any server could pass inspection without
NTSF working. NTSF is a proprietary format of Microsoft and some
company may decide that they don’t want to have the liability of using
MS code in their system, or to pay for it or the alternative source
for the code.
Ext2 is the standard.
The professional thing to do is to follow the standard. If the
originator of material wasn’t a professional before, he is a
professional now. And we as suppliers should be professional and make
certain to tell them how to step up their game from lens to lens.
Following the spec is the only way to make that happen.
Thanks Leslie. Just to round out your info. I use Paragon’s ExtFS for
the Mac, and it is very good for reading and writing. Formatting to
any ext formats is straightforward if you are going for the 256 inode
size. But changing the inode to 128 is not on the list. Actually,
Paragon have sent me a command that is supposed to work, but it is
completely undocumented, and I haven’t had a chance to try it.
Is that your experience with Windows? Or does it have an easy way to
write inode 128?
Thanks, and sorry for the rant Manuel.
C J
On Jan 10, 2017, at 22:59 000PM, Manuel AC via
DCPomatic
<dcpomatic(a)carlh.net <mailto:dcpomatic@carlh.net>> wrote:
Just sent it in an NTFS formatted disk. If possible make sure that
the partition table is MBR and not GUID or something else.
Being in a windows machine is the easiest and safest. It will work
without any problem.
On Wed, Jan 11, 2017 at 1:14 AM, Leslie Hartmier via DCPomatic
<dcpomatic(a)carlh.net <mailto:dcpomatic@carlh.net>> wrote:
If you have no experience with it, you should get someone else to
format the drive, and you use ext2fsd, ext2 IFS, or Paragon's
EXTFS for Windows to copy the DCP to the drive. Windows does not
exactly support linux partitions very well.
The instructions below are amazing, but they are a bit daunting
if you've never done it before.
Leslie
*From:* jjverrico(a)gmail.com <mailto:jjverrico@gmail.com>
*Sent:* January 10, 2017 8:48 PM
*To:* cjflynn(a)digitaltesttools.com
<mailto:cjflynn@digitaltesttools.com>
*Cc:* leslieh1(a)shaw.ca <mailto:leslieh1@shaw.ca>;
dcpomatic(a)carlh.net <mailto:dcpomatic@carlh.net>
*Subject:* Re: [DCP-o-matic] DCP for Linux
Thank for the information. I was hoping I could format a USB
memory stick to EXT2 on my Windows machine and then copy the DCP
file structure onto that EXT2 formatted USB memory stick. I
don't have Linux on my Windows machine. I don't know Linux. Is
this possible?
On Tue, Jan 10, 2017 at 5:01 PM, cjflynn(a)digitaltesttools.com
<mailto:cjflynn@digitaltesttools.com>
<cjflynn(a)digitaltesttools.com
<mailto:cjflynn@digitaltesttools.com>> wrote:
Leslie is correct that the DCP creation platform is not
relevant.
But I think it is a mistake to follow the advice of
submitting your work on the opposite format of what the
festival have asked for…even if they asked in an odd sort of way.
It is true that some software versions of some media servers
will accept FAT32. But there are some that don’t and the
festival seems pretty specific about what they want. They do
that because there is only one formatted drive specification
that all cinema systems must use.
That is the EXT2 that Leslie mentioned.
And, make certain that if someone makes this drive for you
that they make the inode size 128, since that is in the DCI
and ISDCF and SMPTE specifications.
And, if the drive was originally formatted in FAT32, you’ll
be limited to a 4 Gig file size, regardless of the size of
the drive. First format in exFAT, or leave it with NTSF if
that is what it was bought as.
Here is what I do.
The ISDCF document gives the following command line in a
linux type system.
mkfs -t ext3 -I 128 -m 0 /dev/xddN
with xddN being the drive ‘name’, which is most often
something like ‘sdb1’ – you can find that name by the command
sudo lsblk -o NAME,FSTYPE,SIZE,MOUNTPOINT,LABEL
Then unmount with
sudo umount /dev/sdb1
And here are two other formatting commands that work. Myself,
I prefer the last one since it allows me to name the
partition as it is being made.
sudo mke2fs -t ext3 -I 128 -L DCPs 0 /dev/sdb1 – slightly
different command set
sudo mkfs.ext3 -I 128 -m 0 -L
your-chosen-name-of-drive /dev/sdb1 – this one adds a disk
name (change "DiskName" to 'my_dcp_drive' or whatever name
you want to give it) while formatting and
partitioning...change that 'sdb1' to the proper partition number.
Formatting the disk is not so quick – Those Superblocks might
take a few minutes to assemble.
*Follow up by giving permissions to the drive* with: (755 is
usually recommended, but I use 777 for myself)
sudo chmod -R 777
/media/Your_Login_USER_NAME/your-chosen-name-of-drive
You might find that you need to change ownership
sudo chown owner:owner /media/owner/your-chosen-name-of-drive
I usually put my name twice, such as 'cj:cj', then
'/media/cj/ctt_dcps'
I hope this helps. I’d hate you to have a black screen after
getting this far. Good luck. Tell us how it worked out and
what you ended up doing.
C J Flynn
Cinema Test Tools <http://www.cinematesttools.com/>
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DCPomatic(a)carlh.net
http://main.carlh.net/cgi-bin/mailman/listinfo/dcpomatic On Jan 10, 2017, at 15:45 000PM, Leslie
Hartmier via
DCPomatic <dcpomatic(a)carlh.net <mailto:dcpomatic@carlh.net>>
wrote:
No, the platform you use to create the DCP is not relevant.
They may be wanting the content on a EXT2 drive.
If it is small enough, you can provide it on a USB thumb
drive formatted using FAT32. (Most USB drives come formatted
that way.)
Leslie
*From:* dcpomatic(a)carlh.net <mailto:dcpomatic@carlh.net>
*Sent:* January 10, 2017 4:28 PM
*To:* dcpomatic(a)carlh.net <mailto:dcpomatic@carlh.net>
*Reply-to:* jjverrico(a)gmail.com <mailto:jjverrico@gmail.com>
*Subject:* [DCP-o-matic] DCP for Linux
Hello
I've used DCP-o-Matic on a Windows machine to create a DCP
for a short film I made. Worked great. I entered the short
film in a film festival and got accepted. They are asking
me for a Linux compatible DCP. Do I need to create the DCP
on Linux for it to be Linux compatible?
Thanks
Joseph
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