Blackmagic Forum

Hi

I'm using EXR image sequence files that came from Nuke, and contains custom metadata
added by Nuke, but when I export the Edit as EXR file from Davinci, all the original metadata are lost

Is it possible to output EXR files from Davinci and keep all sources metadata ?

Thanks for your help.

Hi, can you detail the location of the 'metadata' as I don't have a known spec for where that should be and in which situations it would be used vs passed through. Maybe its Nuke dark metadata?

Hi

Sorry for the delay, I didn't receive notification mail from the forum...

The metadata I want to keep is metadata that are written in the OpenEXR file format, in the header of the file,
as for example some nuke metadata written can be like this:

Code: Select all

nuke/full_layer_names (type int): 0
nuke/input/creator (type string): "Arnold 4.2.1.3 linux clang-3.4.0 glibc-2.5 oiio-1.4.10 rlm-10.1.2 2015/04/22 11:17:23"
nuke/input/ctime (type string): "2015-06-19 14:03:05"
nuke/input/filesize (type int): 53679024
nuke/input/frame_rate (type float): 24
nuke/input/height (type int): 1080
nuke/input/mtime (type string): "2015-06-19 14:03:05"
nuke/input/timecode (type string): "00:00:00:00"
nuke/input/width (type int): 2578
nuke/node_hash (type string): "adb2d17d4894dee2"

and some OpenEXR metadata:

Code: Select all

compression (type compression): zip, individual scanlines
dataWindow (type box2i): (1 1) - (2576 1078)
displayWindow (type box2i): (0 0) - (2577 1079)
framesPerSecond (type rational): 24/1 (24)
lineOrder (type lineOrder): increasing y

In Nuke, when you create a Write node to ouput the image sequence as EXR format, you have the possiblity to select one of these settings for the metadata:

Code: Select all

[*]no metadata
[*]default metadata
[*]default metadata and exr/*
[*]all metadata except input/*
[*]all metadata

Maybe this can be a solution in Resolve, when you want to output EXR image sequence in Deliver mode, allow user to select if they want to keep metadatas that came with sources images

thanks for your help.

Hi,

Just wondering if someone have more informations about this metadata feature,
at our studio we are currently building the workflow for Nuke > Davinci and this is
the most blocking feature that we need and we currently don't have any solution

thanks for your help

Matthieu

Also it would be very useful to use existing EXR clip metadata to fill the Clip Metadata like the 'Shot Scene' or 'Production',
we embed a lot of useful metadata in our EXR file when shots are rendering ( exp: compositor name, shot number, scene number, project name, etc... )

But all of this data are lost and unusable when imported in Resolve, it would be nice for example if I want to fill in the 'Shot' number clip metadata based on the EXR infos, I can just type something like this : %{metadata:exr/nuke/shot_number}
to avoid trying to add all of this info manually in the Clip Metadata editor ....

And that's why I also want Resolve preserve all the original metadata when I choose to export all clip individually as EXR image files sequence.

Do you found the solution? Bumped into this issue with DaVinci Resolve 17.0b5 Windows. Prepared many useful metadata in Nuke, but Resolve didn't sees them. Not able to find what BMD camera using intrinsically to cheat. I tried to make names as from Davinci's export csv, but with no luck for now.

oleg.zv wrote:Do you found the solution? Bumped into this issue with DaVinci Resolve 17.0b5 Windows. Prepared many useful metadata in Nuke, but Resolve didn't sees them. Not able to find what BMD camera using intrinsically to cheat. I tried to make names as from Davinci's export csv, but with no luck for now.

The metadata is accessible using Resolve scripting now.