- DCP-o-matic users - lists.dcpomatic.com

by Manuel AC

I tend to do it unsigned, so I can later modify the xml files by hand if needed. Wondering if there is any advantage on signing (not encrypting) a DCP. Thanks! Manuel AC

10 years, 6 months

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[DCP-o-matic] Color Space Rec 709 or sRGB

by Andreas Eli

Hello! I think this question has been asked before, but I am still not comfortable with it. I understand the difference between these two color spaces, but how do I know what to choose when working with DCP o Matic? How can I check the color space of a video file? And what do I do if I do not know it? When working with HD Material, is Rec 709 the common color space? When I export from Premiere to Avi uncompressed, TIFF sequence or H264, how do I know what the color space is? Any answer is appreciated! Thanks Andi

10 years, 6 months

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[DCP-o-matic] Encoding servers and LAN

by fred.bobigny＠laposte.net

Hi all, I was wondering how encoding servers are detected by main dcp-o-matic instance. I've noticed that all machines should be on the same local network, but does this mean L2 connected or L3 is Ok? I.e: does main instance scan all IPs included in its subnet or detecting MAC adresses thru ARP? Thanks for this precision, Fred http://www.etheractis.fr/

10 years, 6 months

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Re: [DCP-o-matic] Sony audio mapping

by Carl Hetherington

Hi Tom, Do these projectors not use the normal arrangement? (L,R,C,Lfe,Ls,Rs) Cheers, Carl On Mon, 22 Sep 2014 15:37:48 +0000 (UTC) Tom Rovak <trovak(a)comcast.net> wrote: > Does anyone know the correct audio mapping for 5.1 on a Sony SRXT420 > or any other Sony Projectors? > > Tom Rovak - Executive Producer / Sr. Colorist / Post Production > Supervisor ROVAK COLORIST SERVICES > A Division Of The Annex Studios > Commercials, Feature Films, Music Videos, Long Form > Color Correction, Dailies, Editorial, Finish/VFX > trovak(a)comcast.net > (815)690-8323 > Website / Commercial Reel: http://colorist-rovak.com/ --

10 years, 7 months

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[DCP-o-matic] v2 srt doubt

by Manuel AC

Should I trust the preview for position and size of subtitles? They are huge, and the second line is missing. Actually also looks like it doesn't recognize the linebreaks of two lines subtitles. Thanks! Manuel AC

10 years, 7 months

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[DCP-o-matic] Network bandwidth needs, and also revisiting a (possibly) pointless discussion

by Leslie Hartmier

Hey everyone! I have a question regarding the conversion farms that people have made, and I would like some insight. We're going to have some fun creating a four octo-core machine farm to make DCPs out of whatever comes our way, and I was wondering if anyone is using 10GbE for their internal network. Clearly, 10,000 Base-T is not really necessary for most things. However, we would like to make sure that the bottleneck is not the network, but I also don't want to have to special order about $3,000 in 10GbE hardware to do this if it is not necessary, so if a 1GbE network is comfortably adequate for the process, I really would look forward to that kind of assurance. It would cut the current tally back about a third on the build. On the other hand, if it would be a major benefit, I don't want to take it off the table either. Now onto the other thing: NOTE: I'm certainly not pushing. I was wondering if DCP-o-matic using GPUs for conversion is closer to the front of the minds of Carl and the others. The reason for this is that I don't intend to buy the video cards for the subordinate servers as, if the software is not going to do this any time soon, using the onboard video will be fine, especially since the machines won't even have monitors, keyboards or mice (we'll use TeamViewer to access the machines if need be). I remember the discussion where optimistic thoughts were bandied about for a golden future where everything was always exactly the way we wanted it, so I just thought I'd ask. I mean, the subs will be using linux, and only the master will run Windows (put simply, there are people who are a bit strident regarding the ease for which they expect to use the system, and hey, a single license of Windows is not the expensive part of the build.) Thanks! Leslie

10 years, 7 months

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[DCP-o-matic] Reusing DCPs in DCP-o-matic

by Carsten Kurz

I just did a test loading the video part of a DCP into DCP-o-matic and trying different scaling options. It actually works quite good and it seems that the FFMPEG input also chooses the right colour model (no doubled xyz), so technically, it seems to be no problem to run a DCP through DCP-o-matic for cropping, trimming, dubbing, etc. Just that DCP-o-matic currently will not read an audio MXF as an audio file but fails trying to read it as a video file. Carl, do you think this audio detection issue could be solved somehow? Most people would find it weird running a DCP through the program, but as DCPs currently are not easily editable and good/free converters are not available, it could still be a useful workflow to do simple edits. I know you can always try to feed the audio externally after unwrapping, but it would be far more easy if DCP-o-matic could do it. - Carsten

10 years, 7 months

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[DCP-o-matic] DCP-o-matic version 2

by Carl Hetherington

Hi all, I have been working on a new branch of DCP-o-matic, whose version numbers start with 2 (e.g. the current version is 2.0.5). The main new features of this branch are: - import of existing DCPs, allowing re-packing, trimming etc. - import of .SRT format subtitles - creation of DCPs with "proper" (XML) subtitles However there has been a fair bit of rearrangement of the code, so there are almost certainly new bugs with old features (as well as new bugs with new features!) I would not advise anyone to use version 2.0.x for "production". Having said that, if anyone wants to try, it would be great to hear how you get on. You can get the current version from here: http://dcpomatic.com/v2 Version 2.0.x will install alongside your existing DCP-o-matic install, and I'll still be working on the 1.x branch for the forseeable future. If you have any bug reports etc. please feel free to email me or the list, or add them directly to the bug tracker here: http://carlh.net/mantis Best regards Carl

10 years, 7 months

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[DCP-o-matic] no stretch as default scale option missing

by Manuel AC

dcpomatic 1.73 is missing "no stretch" as default option for scaling, whyyyy!?!?!? :) Manuel AC

10 years, 7 months

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[DCP-o-matic] Crash when quitting while in preferences

by Carsten Kurz

It happens regularly in the Mac version (also earlier than the current one) - quitting the program (CMD+Q) while being in preferences, will always crash the application. No big deal, but maybe easy to fix. Also, there seems to be a problem with the audio analysis in the mac version, when you reopen a previously save project - the program seems to assume that an audio analysis has been already performed, but is missing the analysis data. Hence, there is no volume graph. Only solution is to discard the content audio and reloading it - then an analysis will be performed and the graph is there. This also happened in most earlier mac versions I tried this. The current windows version does not have that issue. - Carsten

10 years, 7 months

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[DCP-o-matic] error

by vu hoan

Hi. Carl i have a problem: 1- I add a directory of TGA images, a error occur "could not decode video for view (could not decode image file) " 2- I choose 2D scope, DCP show a message: " An unknowm exception occurred ..v.v."

10 years, 7 months

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[DCP-o-matic] DCP-o-matic 1.73.0 released

by Carl Hetherington

Hi all, I just uploaded DCP-o-matic 1.73.0. This version includes: Fix for unexpectedly lost bits of content (10 minutes from the end of files, for example) Updated de_DE translation from Carsten Kurz. Updated fr_FR translation from Grégoire Ausina. Fix buggy trimming of content when overriding its detected frame rate. Fix various strange behaviours with translation of the KDM email in preferences. Fix missing translations of some UI parts. Fix to fetching of Doremi certificates with imb- filename prefixes. Hopefully fix random crashes (especially during encoding) on certain versions of OS X. The optional <Hash> tags are now written to CPL files to try and make Technicolor happy. A new ‘default scaling’ option in preferences. Allow changing of timing properties for many pieces of content at the same time. Add KDM email BCC option. Special thanks to Carsten Kurz, Grégoire Ausina, Will Meadows and Jamie Rokovetsky. Download it from: http://dcpomatic.com/download Any comments, bug reports etc. are welcome to the mailing list (dcpomatic(a)carlh.net) or me personally (carl(a)dcpomatic.com). With best regards, Carl

10 years, 7 months

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[DCP-o-matic] Help

by vu hoan

Hi. everybody. I have a question : why don't DCP-o-Matic import external audio? And DCP-o-matic can't import tiff sequence image, targa sequence

10 years, 8 months

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[DCP-o-matic] Feature suggestion

by Carsten Kurz

What about a 'load recent' option in the file menu? - Carsten

10 years, 8 months

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[DCP-o-matic] 25fps, good idea

by Ben Edwards

Hi, I just discovered the source material is 25fps, was planing on making a 24fps DCP I beleve some ceinmas do not support 25? is this correct or should I create a 25ftp DCP. How good is DCPOMsatic at doing frame rate conversion? I am sure it is great but thought it better to ask. Ben -- *Ben Edwards, Video Editor and Cameraman* *web*:*www.nkytwig.com* <http://funkytwig.com/>* mobile:**07773 02 44 82* *skype**:**funkytwig** twitter:**@funkytwig* <https://twitter.com/funkytwig>iContact Community Video <http://www.icontactvideo.org/> | Bristol Community Channel <http://bristol.mirocommunity.org/>

10 years, 8 months

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[DCP-o-matic] KDM key managment

by Ben Edwards

Hi, I have been asked to create a DCP of a feature film. Was wondering if there were any places who offer a service to manage the issuing of keys. If it only shown in a few places I am sure I can handle it but it the film goes to a wider distribution I am going to need someone else to take this on. Also I guess I would give them the whole dcpomatic directory. Ben -- *Ben Edwards, Video Editor and Cameraman* *web*:*www.nkytwig.com* <http://funkytwig.com/>* mobile:**07773 02 44 82* *skype**:**funkytwig** twitter:**@funkytwig* <https://twitter.com/funkytwig>iContact Community Video <http://www.icontactvideo.org/> | Bristol Community Channel <http://bristol.mirocommunity.org/>

10 years, 8 months

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[DCP-o-matic] Sync issues

by Ben Edwards

Sorry, me again;). I manages to create a DCP from a prores 4444 and 6 WAV files and I am getting sync issues, from quite near the begiinng. Anyone else had this? -- *Ben Edwards, Video Editor and Cameraman* *web*:*www.nkytwig.com* <http://funkytwig.com/>* mobile:**07773 02 44 82* *skype**:**funkytwig** twitter:**@funkytwig* <https://twitter.com/funkytwig>iContact Community Video <http://www.icontactvideo.org/> | Bristol Community Channel <http://bristol.mirocommunity.org/>

10 years, 8 months

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[DCP-o-matic] DCPomatic

by Steffen Hager

Hallo, I've been using for a long time, the program for creating DCPs for a small cinema in Leipzig and am very satisfied. However, recently I noticed with version 1.72 a bug: I want to create two longer DCPs to each 117 and 104 minutes. After the upload of each file (m2ts) and their content check, the software takes only about 117 107 and 104 instead showed only about 93 minutes. In fact, I've noticed in the preview monitor, that in each case the last 10 minutes of the films were missing. I then installed and found that the error occurs from version 1.70 or older. For a short feedback I would be grateful. best regards Steffen Hager --- Diese E-Mail ist frei von Viren und Malware, denn der avast! Antivirus Schutz ist aktiv. http://www.avast.com

10 years, 8 months

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Re: [DCP-o-matic] ITU/EBU loudness in FFMPEG for dcp-o-matic (Carl Hetherington)

by Tobias Nimmert

EBU R128 is mostly meant as a TV Standard. For Cinema Loudness you should use LEQ82. And no, R128 and LEQ82 is not the same... :) Best Tobi > ------------------------------ > > Message: 2 > Date: Mon, 11 Aug 2014 18:56:46 +0100 (BST) > From: Carl Hetherington<cth(a)carlh.net> > To: dcpomatic carlh net<DCPomatic(a)carlh.net> > Subject: Re: [DCP-o-matic] ITU/EBU loudness in FFMPEG for dcp-o-matic > Message-ID:<alpine.DEB.2.02.1408111856300.27485(a)main.carlh.net> > Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed > > > Hi Carsten, > > Yes, I'll put this (or something like it) in. > > Cheers > Carl > > On Wed, 16 Jul 2014, Carsten Kurz wrote: > >> >Just found this in a forum: >> > >> >https://tech.ebu.ch/docs/events/opensource13/presentations/open-source-loud… >> > >> > >> >Seems there is an EBUR128 loudness meter filter built into libavfilter. >> > >> >Maybe one could use it in dcp-o-matic. >> > >> >- Carsten >> > >> > >> > >> >_______________________________________________ >> >DCPomatic mailing list >> >DCPomatic(a)carlh.net >> >http://main.carlh.net/cgi-bin/mailman/listinfo/dcpomatic >> > >> > >

10 years, 8 months

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[DCP-o-matic] ITU/EBU loudness in FFMPEG for dcp-o-matic

by Carsten Kurz

Just found this in a forum: https://tech.ebu.ch/docs/events/opensource13/presentations/open-source-loud… Seems there is an EBUR128 loudness meter filter built into libavfilter. Maybe one could use it in dcp-o-matic. - Carsten

10 years, 8 months

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[DCP-o-matic] Prores 4444 & KDM keys

by Ben Edwards

Hi, I am just about to create a DCP for a 90 minute feature. Will prores 4444 work? Seems best way to go. Also in terms of creating a DCP with requires a KDM key what setting shall I use. I ask because I played around with this a wile ago and it did not work. No error, it just did not create the file. Regards, Ben -- *Ben Edwards, Video Editor and Cameraman* *web*:*www.nkytwig.com* <http://funkytwig.com/>* mobile:**07773 02 44 82* *skype**:**funkytwig** twitter:**@funkytwig* <https://twitter.com/funkytwig>iContact Community Video <http://www.icontactvideo.org/> | Bristol Community Channel <http://bristol.mirocommunity.org/>

10 years, 8 months

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[DCP-o-matic] Trimming issues

by Ben Edwards

So I set it up so it would start 5 minutes in and encode 15 minutes. What I got was a DCP the length of the full film, with audio starting at the beginning and ending at the end (i.e no trimming), however the video starts from 5 minutes in and goes for 15 mins (i.e. trimming worked). It has done the trimming as asked for image but not audio. This means the audio is massively out of sync, by 5 minutes. The good new is my audio problem seems to be sorted and it looks great (think the gamma was 2.2). Ben -- *Ben Edwards, Video Editor and Cameraman* *web*:*www.nkytwig.com* <http://funkytwig.com/>* mobile:**07773 02 44 82* *skype**:**funkytwig** twitter:**@funkytwig* <https://twitter.com/funkytwig>iContact Community Video <http://www.icontactvideo.org/> | Bristol Community Channel <http://bristol.mirocommunity.org/>

10 years, 8 months

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Re: [DCP-o-matic] 25fps, good idea

by Carsten Kurz

Am 09.08.2014 um 16:56 schrieb Ben Edwards: > PS, can I change the name of the directory to change the name of the DCP or will this screw things up? Watch this: http://digitalcinemanamingconvention.com/unabridged.asp DCP-o-matic will add a -25 automatically to the DCP name when you check 'Use ISDCF name' and have a non-24fps frame rate chosen. You can change the directory names containing the two separate DCPs later, that's no problem. Just don't change any of the filenames contained in the DCP directory. Like 'Feature_25fps_SMPTE' - Carsten > > > On 9 August 2014 15:54, Ben Edwards <list4me2(a)gmail.com> wrote: > Thanks for that. Looks like I will create a 2 versions. A 25FTS SMPTE and a 24FPS IOP. Does this sound sensible? Seem to cover most bases. > > If I create one, then change the fps and SMPTE/IOP settings and create a second DCP I assume it will create 2 DCP directories, will it have to totally re-encore? > > Lastly it looks like the DCP name does not show the FPS, should I change the name. First time calling it filmename_25fps and then filmname_24fts. Will It totally re-encode if I do this? > > Ben > > > > > > > On 9 August 2014 13:16, Carsten Kurz <audiovisual(a)t-online.de> wrote: > > Am 09.08.2014 um 13:59 schrieb Ben Edwards: > >> I am confused, one minute I am being told it will not be notable, the next that is will "change the pitch and the tonality of the voices and music. ". This is kind of what my googeling also seemed to reveal. There seem to be two camps;(. > > > Not really ;-) > > Resampling is no problem to do in good quality, but it leaves the sound with a 25/24 pitch change. If you also want to pitch-correct the resampled audio, you need a higher quality approach. However, a small change like the one needed for 24/25 is usually unnoticeable. It get's more complicated with larger pitch changes, and typically you would want to resort to external tools using special algorithms. Music is typically more complicated to pitch correct than dialog. > > Did you ever notice strange audio, pitched audio, etc. on any cinema presentations, DVDs, BluRays, etc.? No? Then you shouldn't care, because this technique is used widely for most entertainment content. As you are living in europe, which is a 25/50Hz country, you will be exposed to this every day when watching/listening entertainment media, at home or in cinema. > > As you have your audio in separate files, you could play with it easily using external tools like Audacity, Audition, etc. > > Always trust your own eyes and ears. > > The best way, of course, is to produce in 24fps/48KHz right away if aimed for cinema. > > > - Carsten > > > _______________________________________________ > DCPomatic mailing list > DCPomatic(a)carlh.net > http://main.carlh.net/cgi-bin/mailman/listinfo/dcpomatic > > > > > -- > Ben Edwards, Video Editor and Cameraman > web:www.nkytwig.com mobile:07773 02 44 82 skype:funkytwig twitter:@funkytwig > iContact Community Video | Bristol Community Channel > > > > -- > Ben Edwards, Video Editor and Cameraman > web:www.nkytwig.com mobile:07773 02 44 82 skype:funkytwig twitter:@funkytwig > iContact Community Video | Bristol Community Channel

10 years, 8 months

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Re: [DCP-o-matic] Trimming issues

by Carsten Kurz

Am 08.08.2014 um 13:49 schrieb Ben Edwards: > OK, trying to do this but if I start 4 mins in and trim 1:20 off end I get different length for audio and video. Any advice. Maybe just a display rounding problem. Video is referenced in frames, audio in samples. Carl will probably comment on this. Never used the trim feature with split video/audio content. As this is only for testing, small sync issues shouldn't be a problem, as long as it is correct for the full length version. - Carsten > > > > > On 8 August 2014 11:23, Carsten Kurz <audiovisual(a)t-online.de> wrote: > > Am 08.08.2014 um 12:15 schrieb Ben Edwards: > > > Latest version, downloaded it a few days ago. The audio was 5.1 added as 6 separate files. When I tried to create first 15 minutes last time and it did whole film I was doing the same thing and sync was OK. I did however have to reimport all the media as when I reloaded project it would not work so I deleted all the media and imported. > > That will be the problem - when you insert video and audio separately, you need to trim ALL files that need to run in parallel with the same parameters. If one is left untrimmed, DCP-o-matic will create a full length DCP with the remaining trimmed audio and video tracks padded with silence and/or blacks. > > - Carsten > > _______________________________________________ > DCPomatic mailing list > DCPomatic(a)carlh.net > http://main.carlh.net/cgi-bin/mailman/listinfo/dcpomatic > > > > -- > Ben Edwards, Video Editor and Cameraman > web:www.nkytwig.com mobile:07773 02 44 82 skype:funkytwig twitter:@funkytwig > iContact Community Video | Bristol Community Channel

10 years, 8 months

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[DCP-o-matic] Tested first mayor DCP, few issues

by Ben Edwards

So I managed to create a DCP of the first 30 mins of the feature I am DCPing and get it on a ext3 drive. Ingested and plays fine but there are a few problems. Firstly the audio is pooping in some places, We have a Dolby CP750 and setting it between 3.5-4 seems about right for this DCP. This is very low so I guess I have made the DCP to loud but the popping surprises me, is this normal if the DCP is too loud. Looking at the audio graphs in DCPOMatic it looked like it was peeking about -12 db. I guess the best thing is to use the level calculator and make 3.5 come out as 5. The 5.1 is mixed to 0db and I had a -1db audio tweek in DCPOMatic. The other issue is that there seem to be some blown whites. I have been trying to find out what the grading was set up for but used 2.4 as they are being non responsive (I have been told it is Rec.709). What effect is using 2.2 or 2.6 going to have. If I go to 2.6 am I correct in thinking the image will go darker. The thing is there are some very dark scenes. My understanding is that at the ends of brightness (very dark and bright) changes in the gamma curve used have the least effect. i did ask if the whites where ever meant to be blown (its a found footage mockumentery) and the answer was no. Any advice? Regards, Ben -- *Ben Edwards, Video Editor and Cameraman* *web*:*www.nkytwig.com* <http://funkytwig.com/>* mobile:**07773 02 44 82* *skype**:**funkytwig** twitter:**@funkytwig* <https://twitter.com/funkytwig>iContact Community Video <http://www.icontactvideo.org/> | Bristol Community Channel <http://bristol.mirocommunity.org/>

10 years, 8 months

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