Chaos Corona Forum

Chaos Corona for Cinema 4D => [C4D] Bug Reporting => [C4D] Resolved Bugs => Topic started by: quadcat on 2018-05-19, 06:41:53

Title: Motion blur render holding.
Post by: quadcat on 2018-05-19, 06:41:53

When I begin render (with object motion blur is on) just after start cinema - all is OK. Then I stop render. Then I start render again (without any changes) - C4d just holding.
Versions from b1 to b2.
I sent scene via private upload.

more info:
also, when I start render sequence - if first frame of render sequence equal current frame on c4d timeline - reder begins well. Sometimes reder continue few frames untill holding.

Title: Re: Motion blur render holding.
Post by: Beanzvision on 2018-05-20, 09:31:45

I've tested your file and it renders as it should for me, no "holding". Instantly renders.

Title: Re: Motion blur render holding.
Post by: quadcat on 2018-05-20, 17:54:04

Sent video with issue via privat uploader!

Title: Re: Motion blur render holding.
Post by: Neb on 2018-05-22, 15:59:57

Hello

quadcat - I decided to add a few words to your topic due to the same problem I hope that it's ok for you.
I can confirm the problematic behavior of the rendering when object motion blur is ticked on. I have scene with one animated object. Initially It was soft body object which interact with two simple objects. I simulated short sequence and baked all frames via simulation tag. After a few tests I noticed that first frame render attempt is ok as quadcat described. Next attempt causes that rendering stuck on the "Preparing scene data" stage. It's definietly bug for object motion blur option.
I exported points animation of my object to mdd file and re-exported soft body model with mdd animation file where all points move related to mdd data in each frame. No cached simulation tag in the scene. Again corona render first frame good and stucked on next frame on "Preparing scene data" stage. Always when I tick off object motion blur feature everything is ok for both types of the animation: simulation or mdd file.
If it will helpful I can upload my scene.

Best regards
Neb

Title: Re: Motion blur render holding.
Post by: mte on 2018-06-05, 10:41:06

Hi,
just uploaded a scene to show the MB issue.
1528187968_MotionBlur-Bug.c4d