Ornatrix Maya: Vray .ABC motion blur question? (not working right in my case)

I am exporting a single .abc file per frame and reading it into a Vray Proxy node via the built in Vray expresssion "hair.<frame04>.abc". Its all working great shaders and assignements come across. but its not motion blurring properly. Does the ornatrix alembic export motion blur data? I do not want to export a single .abc file as it would be huge and take a million years. Currently we are using the farm and a pre-render script to use the mel command line Ornatrix alembic export per frame. please advise as this is a big issue for us to solve. I'd prefer not to go down the vector blur route with a character. Thanks Andy
5 October 2018 #18935
andyw	currently I am setting my start and end frame the same in the mel. Do i need to set my end frame frame+.25? so it get moblur? - Testing now
5 October 2018 #18936
EPHERE	Hi Andy, Good question, I don't think we're exporting any motion vectors to abc files right now. I can look into this tomorrow or early next week as I can see how this is very important. Marsel Khadiyev (Software Developer, EPHERE Inc.)
5 October 2018 #18937
andyw	Thanks Marcel, we are doing a very cute character piece and we have about 3 weeks left on our schedule. If you can fix this it would be amazing otherwise me might have to go with a vector blur which is not as good. thanks again. andy
6 October 2018 #18957
EPHERE	Implemented in 17216+ (next nightly). I didn't test it really, will leave that up to you. You'll need to enable the "Export Velocities" checkbox, or set the "-v" flag in the command. Marsel Khadiyev (Software Developer, EPHERE Inc.)
6 October 2018 #18958
andyw	Thanks Marsel! I'll test it on Monday!!
8 October 2018 #18994
andyw	Hey Marcel, This is working well. Although I do have a question. in the example below I am exporting a frame with this command line maya.cmds.OxAlembicExport(path,furShapes, ft= frame, tt=frame, s=1, r=True, v=True) ex: frame = 1001 It exports motion blur perfectly but with the following settings. Vray Duration: .5 , Interval Center:.5 The issue is that we mostly render with an interval center of 0 so that objects don't slide from the track. can the export take that into account and let us slip back the .abc .5 frame to line up with our motion blur settings? I don't see anything the vray proxy node to do this. thoughts on this? and thanks for getting this in so fast! It helps a TON! Attached Files:
8 October 2018 #18996
andyw	Also is there a flag to change the .abc format?

Posted by:		andyw
Data created:	5 October 2018