11 Jan
2017
11 Jan
'17
9:33 a.m.
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> 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/>
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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