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Grading adjustment in Resolve for DCP creation
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Hi Terrence,
It was the smpte / interop switch over. Particularly on the Dolby server, as we tested on various others and it was fine. I got burned pretty bad on that one (really, really embarrassing) and so haven’t looked at OpenDCP again. This issue may have been dealt with since, but I haven’t even tried. To be honest, using openDCP isn’t worth the risk to me, better to use commercial solutions with relationships to the server manufacturers.
With regards to the broken smpte implementations, you’re probably right, problem is exhibitors and server manufacturers have been painfully slow in updating these.
-Juan
online editor | colorist | VFX | BD author
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There was a period where firmware versions were all over the place. Even several of the big commercial DCP encoders had serious compatibility problems with SMPTE. The push for DCI compliance this year has improved things a lot. I am surprised you had issues with the Dolby though, considering that is what I use and it was probably the most tested server, but again I always had updated firmware.
I totally understand your position. As with any open source software, mileage varies, especially software that is in development. Obviously, I have no financial gain if somebody uses OpenDCP or not, but I certainly want make it as solid as possible and any feedback helps.
I appreciate your responding back to my questions.
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I appreciate your asking the questions.
Glad to see the development of OpenDCP is ongoing. We all benefit from innovation and competition. So thank you for that.
online editor | colorist | VFX | BD author
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it seems that you are involve in opendcp, i have a small question.
in the jpg2000 creation window, i see that we can select both sRGB or REC709 as input source. Does it meen that opendcp jpeg2000 can simply and easily convert REC709 source to a good XYZ version without need to adjust source in full range mode ?
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Thx for the information Knut so i look in the manual but i don’t exactly know what i’m looking for ?
something like “1d lut gamma compensation” ? -
[Jean-Christophe savelli] “something like “1d lut gamma compensation” ?”
No, it’s not exactly that ticket. ‘Only’ how to deal with luts.
But if you could calibrate your monitor to the propper gamma a simple node on track will solve it too.Or try this one: https://forums.creativecow.net/readpost/277/5082
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It’s exactly what i finally done a node with black lift adjusted and a small gamma adjustment in the mid tone.
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Here is the result : everything seem to work, i will make new test tomorow but for the first try i’m quite happy.
Here is what i do :
– export my entire film from davinci in prores422 HQ REC709 unscalled full range.
– upscale and convert in TIFF 16 bits 2048×858 REC709 (lin luma)
– do the REC709 TIFF to JPG2000 XYZ in openDCPI have a little désappointent with chroma level, little desaturation after XYZ conversion (3 or 4 % desaturate) but my black are black.
Do you think i have to adjust a little my chroma level in Resolve ?
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