Hi all,
I have made a beta test release of DCP-o-matic version 2. It is not ready for general use yet, but testing would be most welcome. You can install it alongside an existing version 1, so you can carry on using 1.x for important work.
You can see details of version 2 here:
http://dcpomatic.com/v2
Any comments or bug reports are welcome to carl(a)dcpomatic.com, or to Mantis (http://dcpomatic.com/mantis).
I would be grateful to hear any reports of success as well as failure.
With best regards,
Carl
I participated in an interesting thread on film-tech that deals with an anomaly of Doremi (now Dolby) IMBs. As far as we found out, the Doremi IMB will not display 4k content when it was encoded with OpenJPEG - that would be true for all open-source DCP creation utilities, like DCP-o-matic, OpenDCP, etc.
A guy from france with some programming insight into both OpenJPEG and the Kakadu encoder hinted me towards a possible reason for this - JPEG2000 offers multiple resolution layers, 2k and 4k are one of these resolution layers (smaller ones are there as well). He pointed out that OpenJPEG and Kakadu may use different numbering schemes to express these resolution layers, and that the Doremi IMB may misuse the highest number in OpenJPEG, thereby only selecting the 2k layer instead of the higher 4k layer.
As a matter of fact, our Sony XCT-M10 (part of the Sony SRX-R515/510 projectors) does not have that issue, it will display 4k from both OpenJPEG and Kakadu.
So far, it is not entirely clear to me wether that is an issue with OpenJPEG/DCI profiles handling, or if it is a flaw in these Doremi IMBs.
I have never been a strong endorser of using 4k for your own projects, in most cases, it's not worth the extra memory or compression time. It is actually really hard to create/maintain real 4k value in your source footage. Aside from that, all 4k projectors do a pretty good job in upscaling 2k to 4k anyway. So aside from some synthetical patterns (which actually lead us finding that bug), I see little benefit in creating 4k DCPs. Same is true for using higher J2k bandwidths than 150MBit/s as long as you stay within 24-30 fps content.
The second issue is that while testing the 4k behavior of the Doremi and Sony IMBs, we found out that, even when using other J2K encoders like Kakadu, the Doremi IMB can not display complex full screen patterns in 4k - it will drop to 2k as well. We only confirmed this with synthetic checkerboard patterns again, it is not clear how likely this is to happen with any 4k real-life footage. We will conduct more tests to find out about that. The Doremi will not only show complex 4k content in 2k only, it will also create nasty flashing when switching between both modes. So there is a another good reason to not create 4k DCPs if not absolutely necessary.
Well, until the first issue is either solved in OpenJPEG or the Doremi firmware, there are little chances that these nasty flashing artifacts turn up with any 4k content created with DCP-o-matic or OpenDCP - simply because the Doremi will not select the 4k layer at all.
There is an early J2k viewer contained in the OpenJPEG 1.3 package which is able to detect the different numbering schemes between OpenJPEG and Kakadu. There is also a hint towards it contained in this paper on J2K encoders - even if it doesn't deal with DCI J2C profiles - see tables 1 and 2 on page 3 of this document: http://purl.pt/24107/1/iPres2013_PDF/An%20Analysis%20of%20Contemporary%20JP…
Carl, did you ever come across the resolution layer numbering scheme when dealing with OpenJPEG in DCP-o-matic?
- Carsten
Hi! Add please russian language.
12 июня 2015, 14:00:12, от dcpomatic-request(a)carlh.net :
Send DCPomatic mailing list submissions to
dcpomatic(a)carlh.net
To subscribe or unsubscribe via the World Wide Web, visit
http://main.carlh.net/cgi-bin/mailman/listinfo/dcpomatic
or, via email, send a message with subject or body 'help' to
dcpomatic-request(a)carlh.net
You can reach the person managing the list at
dcpomatic-owner(a)carlh.net
When replying, please edit your Subject line so it is more specific
than "Re: Contents of DCPomatic digest..."
Today's Topics:
1. Translators: web-based translation test (Carl Hetherington)
_______________________________________________
DCPomatic mailing list
DCPomatic(a)carlh.net
http://main.carlh.net/cgi-bin/mailman/listinfo/dcpomatic
--
С уважением, Войтович Игорь
Hi Carl,
you certainly already had some thoughts about how the transition to v2 should happen some day? Share your ideas how 1.x and 2.x could grow together? How many essentials do they share currently?
- Carsten
Hi all,
DCP-o-matic 1.79.0 is now ready to download from:
http://dcpomatic.com/download
----- IMPORTANT NOTE FOR THIS RELEASE -----
Colour conversion presets have changed in this version. As a result, if
you load films created by previous versions of DCP-o-matic they are likely
to display their colour conversion as “Custom” since the conversion no
longer matches any preset.
----- CHANGES IN THIS VERSION -----
Updated ru_RU translation from Igor Voytovich.
Updated fr_FR translation from Thierry Journet.
Updated de_DE translation from Carsten Kurz.
Hopefully fix crash on editing cinema preferences on Windows (#474).
Various fixes to clumsiness of snapping in the timeline.
Fixes for various random crashes on OS X.
Fix for strange behaviour when using several pieces of image content in one film (#531).
Fix for “file not found” errors at the end of encodes in some cases.
Fix crash on pressing Ctrl+A in some cases (#525).
Attempt to fix problems when sending KDM emails with non-Latin character sets (#549).
Fix for missing audio channel checkboxces on initial display in the audio graph dialog (on OS X).
Fix incorrect ISDCF name audio channel counts in some circumstances.
Fix problems with audio analyses not appearing in some circumstances.
Allow the correct transformation to be applied to Rec 709 sources when converting from YUV to RGB, and default to Rec 709 for colour conversions.
Correct small and erroneous differences between the RGB->XYZ transform matrix for sRGB and Rec 709.
Use a single file to store frame hashes (rather than one file per frame) speeding up copying or deletion of projects (#444).
Better estimation of required disk space when the target filesystem does not support hard links (#511).
Efficiency improvement when running on machines with many cores.
Disable OK in the KDM certificate download dialogue until a download has succeeded (#404).
Sort image files that are added in bulk so that they are added in a sensible order.
Ignore image filenames which start with ._ to avoid errors when importing sequences of files that have been processed on OS X.
Allow configuration of encryption key (#534).
Define colour conversion to XYZ in terms of red/green/blue chromaticities and white point, rather than using a matrix.
Allow adjustment of the white point when converting colour.
Add a P3 colour conversion preset.
Add a readout of the peak audio value (and time) (#557).
Add an option to restore the default configuration.
Add a simple content properties dialogue accessible by right-clicking on the content list.
Thanks to Dennis Couzin, Igor Voytovich, Thierry Journet and Carsten Kurz.
Three new supports have been added since 1.78.0: thanks to Frechen-Film e.V., Adrian Manolescu and Raoul Walzer.
Best regards,
Carl
Hello.
Cant create one trailer in 3D for sever doremi master image system 3D or xpand.thanks Ardian.
Sent from Yahoo Mail on Android
From:"dcpomatic-request(a)carlh.net" <dcpomatic-request(a)carlh.net>
Date:Wed, May 13, 2015 at 1:00 PM
Subject:DCPomatic Digest, Vol 33, Issue 10
Send DCPomatic mailing list submissions to
dcpomatic(a)carlh.net
To subscribe or unsubscribe via the World Wide Web, visit
http://main.carlh.net/cgi-bin/mailman/listinfo/dcpomatic
or, via email, send a message with subject or body 'help' to
dcpomatic-request(a)carlh.net
You can reach the person managing the list at
dcpomatic-owner(a)carlh.net
When replying, please edit your Subject line so it is more specific
than "Re: Contents of DCPomatic digest..."
Today's Topics:
1. Re: dcpomatic on Raspberry Pi / Raspian (Carsten Kurz)
----------------------------------------------------------------------
Message: 1
Date: Tue, 12 May 2015 20:03:49 +0200
From: Carsten Kurz <audiovisual(a)t-online.de>
To: David Nedrow <dnedrow(a)me.com>
Cc: dcpomatic(a)carlh.net
Subject: Re: [DCP-o-matic] dcpomatic on Raspberry Pi / Raspian
Message-ID: <98545931-C5B2-460A-8F67-FCB77EF3A95D(a)t-online.de>
Content-Type: text/plain; charset=us-ascii
Hi there,
already after a week, my new Raspberry PI 2 is bored playing Python games.
Do we have a minimal working Raspian-DCPo image for him to test?
- Carsten
------------------------------
Subject: Digest Footer
_______________________________________________
DCPomatic mailing list
DCPomatic(a)carlh.net
http://main.carlh.net/cgi-bin/mailman/listinfo/dcpomatic
------------------------------
End of DCPomatic Digest, Vol 33, Issue 10
*****************************************
Updated RU translation included. "Advanced" tab still not translated
Problem with 1.78.10 described here .
10 мая 2015, 14:00:13, от dcpomatic-request(a)carlh.net :
Send DCPomatic mailing list submissions to
dcpomatic(a)carlh.net
To subscribe or unsubscribe via the World Wide Web, visit
http://main.carlh.net/cgi-bin/mailman/listinfo/dcpomatic
or, via email, send a message with subject or body 'help' to
dcpomatic-request(a)carlh.net
You can reach the person managing the list at
dcpomatic-owner(a)carlh.net
When replying, please edit your Subject line so it is more specific
than "Re: Contents of DCPomatic digest..."
Today's Topics:
1. Release candidate for 1.79.0 (Carl Hetherington)
_______________________________________________
DCPomatic mailing list
DCPomatic(a)carlh.net
http://main.carlh.net/cgi-bin/mailman/listinfo/dcpomatic
--
С уважением, Войтович Игорь
Hi all,
I will put 1.79.0 up for download soon, based on 1.78.10:
http://dcpomatic.com/test-download
If anyone has any problems with 1.78.10, or translation updates, please
let me know.
Thanks,
Carl
Hello all.
I wonder if anyone has experience of making DCPs for access screenings
with audio description track and open caption subtitles?
I'm being asked to quote for the work of creating DCPs for 4 hours of
short film programming with audio description track and open caption
subtitles for a film festival, and have no experience in the area. The
subtitles and audio description audio tracks will be produced by the
festival.
It it really as simple as adding the audio tracks in DCP-o-matic and
burning in the subtitles to the video before encoding? Or are there any
gotchas?
Many thanks,
Jim
Looks like when I change the gain for a sigle channel is not showing
up in the Show Audio graphic.
Also, the channel gain overrides the general gain or is relative to
the other channels? Let's say I have a general gain of -10dB and
center channel is -5dB, will center channel be -10dB or -15dB?
Just to make it harder, it's an stereo source upmixed to 5.1 (up-mixer A)
v. 2.0.41
Thanks!
Manuel AC
