my profile | my password | search | faq & rules | forum home

» Film-Tech Forum ARCHIVE   » Operations   » Digital Cinema Forum   » Scenes become a bit pinkish after DCP conversion

Author Topic: Scenes become a bit pinkish after DCP conversion Rayjohn Tagayon Film Handler Posts: 25 From: Taytay, Rizal, Philippines Registered: Sep 2016 posted 08-08-2018 11:15 PM                     I've been noticing lately that after DCP conversion some scenes from a film we color grade become pinkish. We do our grading on a rec 709 dcp projector, NEC model, davinci resolve on a mac pro. Video out is blackmagic ultrastudio 4k via HDMI. Most scenes that have this issue are mostly during scenes where there are flashing white lights. Like for example, a shot in the night where there's a storm. On grading it's as intended, dark and bluish as the dop instructed. But on DCP the light suddenly looks a bit pink. Any idea what's causing this? We use fraunhofer easydcp resolve plugin for conversion. Thanks!  |  IP: Logged Marcel Birgelen Film God Posts: 3357 From: Maastricht, Limburg, Netherlands Registered: Feb 2012 posted 08-09-2018 01:47 AM                     Keep in mind that DCI uses the DCI-P3 color space and not Rec 709. Now, the DCI-P3 color space is larger than Rec. 709, so conversion usually is not a problem. But if your primary delivery medium is Digital Cinema, you should ideally color grade it for DCI-P3. You say that your DCPs end up being "pinkish", but have you ever tried to play it back on actual DCI equipment in a cinema? And if so, is it also "pinkish" there? This to ensure that your own playback isn't flawed, while the DCP itself might be fine. Also, as an alternative, have you tried using DCP-o-Matic to generate a DCP? DCP-o-Matic is a free tool which takes most common A/V formats as input and creates a DCP from it. It will also do color-space conversion.  |  IP: Logged Marlon Martins Film Handler Posts: 78 From: Torres, RS, Brazil Registered: Apr 2015 posted 08-09-2018 03:12 AM                     i had the same problem with some DCP i created using OpenDCP, and as mentioned, the cause was the wrong selection of colorspace. i set as "P3" as i knew it was the colorspace for DCP, but that setting was for the SOURCE colorspace, so the program could do the proper conversion TO P3. changed to Rec.709 and sRGB for testing, and the color was ok.  |  IP: Logged

All times are Central (GMT -6:00)

Printer-friendly view of this topic

Hop To: Select a Forum: Category: Operations -------------------- Digital Cinema Forum Film Handlers' Forum Large Format Forum Ground Level Feature Info, Trailer Attachments & REAL Credit Offsets Category: Community -------------------- Film-Yak Film Handlers' Movie Reviews The Afterlife Bob Maar's Joke-A-Thon Category: Classified -------------------- Equipment and Supplies Wanted/For Sale Help Wanted/Seeking Employment Category: System -------------------- Software Beta Testing Forum

The Film-Tech Forums are designed for various members related to the cinema industry to express their opinions, viewpoints and testimonials on various products, services and events based upon speculation, personal knowledge and factual information through use, therefore all views represented here allow no liability upon the publishers of this web site and the owners of said views assume no liability for any ill will resulting from these postings. The posts made here are for educational as well as entertainment purposes and as such anyone viewing this portion of the website must accept these views as statements of the author of that opinion and agrees to release the authors from any and all liability.