New subject: [DCP-o-matic] DCP for Linux

15 Jan 2017

On Jan 15, 2017, at 00:10 000AM, Joseph Verrico &lt;jjverrico(a)gmail.com&gt; wrote:
Turns out this was pretty easy using ubuntu linux.
Absolutely marvelous to hear. And now, it is Sunday. When is/was your screening? Was that
a success as well?
Do any of the instructions need changing for accuracy or clarity?
Did you use any links that proved helpful?
Did you find a person to help you?
How long was the process once you started on the path?
Do any of the instructions need changing for accuracy or clarity?
C J Flynn
Cinema Test Tools <http://www.cinematesttools.com/>
...
  On Jan 15, 2017, at 00:10 000AM, Joseph Verrico
&lt;jjverrico(a)gmail.com&gt; wrote:
 Turns out this was pretty easy using ubuntu linux.
 On Tue, Jan 10, 2017 at 9:07 PM, cjflynn(a)digitaltesttools.com
<mailto:cjflynn@digitaltesttools.com> &lt;cjflynn(a)digitaltesttools.com
<mailto:cjflynn@digitaltesttools.com>> wrote:
 It’s good to be bold. Continue. cjf
  On Jan 10, 2017, at 20:48 000PM, Joseph Verrico
&lt;jjverrico(a)gmail.com <mailto:jjverrico@gmail.com>> wrote:
 It's a 15 minute short film.  I haven't created the DCP yet but I can't
imagine its going to be larger than 5 GB.  The MP4 is only 1 GB.
 I really appreciate your help on this.  I am going to try to pull this off with the tools
you've shared.  If not, I will look for somebody to do it for me.  I have until the
end of the week so I have some time.
 Thanks again for your help.  I may post other questions as I attempt this feat of
strength.
 Joseph
 On Tue, Jan 10, 2017 at 8:36 PM, cjflynn(a)digitaltesttools.com
<mailto:cjflynn@digitaltesttools.com> &lt;cjflynn(a)digitaltesttools.com
<mailto:cjflynn@digitaltesttools.com>> wrote:
 Hi Joseph
 I have several Windows machines here, but they are set up for testing other applications.
So I can’t test this for you now. (I do most everything on a Mac.)
 I’ve done a quick Google and a couple of ext2/ext3 drivers for Windows. One seemed open
source and current <https://sourceforge.net/projects/ext2fsd/
<https://sourceforge.net/projects/ext2fsd/>>. One seemed low-cost and current
<http://www.partition-tool.com/easeus-partition-manager/linux-partition-manager.htm
<http://www.partition-tool.com/easeus-partition-manager/linux-partition-manager.htm>>.
There might be others.
 They look simple to install and use.
 The other alternative – which is what many of us have on our Mac and Windows systems – is
to download and install the free and open source Virtual Machine Manager
“VirtualBox", then install the free and open sourced “Ubuntu" Operating System.
Suddenly you are a Linux person. It may not be the thing to do now as you are trying to
finish a project, but it only takes a few minutes to install each, then open the Terminal
and put in the commands. It will take a few seconds with a hammer figuring out how to
steal the USB drive from the Windows system to allow the Linux system to write to it, and
another few to figure out how to create a share folder on your Windows drive to the
Ubuntu, but it isn’t rocket surgery.
 My actual recommendation is to find a friend who can do this for you. Or wander the local
college with a sign on your chest. It will take them seconds, plus the few minutes to
transfer the data from one drive to the other.
 How big is your DCP that you need to put on the USB drive?
 C J Flynn
 Cinema Test Tools <http://www.cinematesttools.com/>
  On Jan 10, 2017, at 19:48 000PM, Joseph Verrico
&lt;jjverrico(a)gmail.com <mailto:jjverrico@gmail.com>> wrote:
 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> &lt;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 &lt;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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Re: [DCP-o-matic] DCP for Linux