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Blender "Network Render" Addon Output Animation Black Bar at the bottom of some rendered frames
Open, Waiting for Developer to ReproducePublic


System Information
Master/Client/Slave - i7 8700K 32GB DDR4 GTX1070 (CPU Only render)
Slave - Ryzen 1600, 8GB DDR4 GTX 1070 (CPU Only Render)

Operating system:
Windows 10x64 Pro both system

Graphics card:GTX 1070

Blender Version
Broken: 2.79 e045fe53f1b0

Short description of error
Animation Result (JPG AVI) some frames have a black BAR at the bottom of frame. Maybe 3-5% of height of animation screen size

Exact steps for others to reproduce the error
I attached two blend files, where this happens, (one I just made to see if issues persist.)
I have ensured both computers have the same files in APPDATA in User folder of C Drive
I have seen both computers cpu goes active 100% when making the animation. so I know they are both contributing.

Simply Open 3x Blender on 1 computer and 1x Blender on the 2nd computer
Set the network rendering up. for me Master is port I use 9255
Connect the slaves to master.
Open the blend file in the client
Animate to network.

Based on the default startup or an attached .blend file (as simple as possible).

1 of the link is a video showing the issue.
2 of the links are .blend files



Event Timeline

hi, currently the addon is unsupported in both 2.79 and 2.8. With no developer to handle your bug I'm really not sure what we can do here. Have you tired adjusting frame rate and anything else you can think of?
It's very difficult to reproduce this bug and "Simply Open 3x Blender on 1 computer and 1x Blender on the 2nd computer" would need someone with 2 comps and the technical know how to set up this advanced technique.
Are your video drivers up to date? possibly this could cause issues?

Brendon Murphy (meta-androcto) triaged this task as Waiting for Developer to Reproduce priority.Mon, Sep 9, 5:04 AM
shaun (toxsickcity) added a comment.EditedMon, Sep 9, 6:15 AM

It's all fine. Don't worry too much here
I think I am about to try third party solutions
And with eevee performance renderfarm maybe not so feasible anymore.

I was only experimenting with idea to buy a threadripper or the new 3950X 16c
Or try with 3-4 backup 8c ryzens in network mode.

This didn't really require a solution from blender Devs..
Just was more of a ask!

User amount of people using this feature would be very little and it's all good .