script to trigger rendering as a background process?

[AltaRD]

Hi,

Is there a way to execute the render from a javascript using not the AE application itself but the render engine so the user can continue to work in AE while the render happens as a background process?

Thank you,

A

[Mathias Moehl]

I think that's how Background Renderer is doing it

http://www.aenhancers.com/viewtopic.php?t=544

https://aescripts.com/bg-renderer/

[AltaRD]

Thank you Mathias,

I am interested to build something myself not to purchase.

Any resources/tutorials/documentation that anyone knows about would be appreciated.

Thank you

[Mathias Moehl · Accepted solution]

Ae scripts can execute command line commands with System.callSystem()

so you should be able to exeute aeRender.exe (the  render engine) with that.

Here is a documentation of aeRender.exe

https://helpx.adobe.com/after-effects/using/automated-rendering-network-rendering.html

[AltaRD]

Perfection! This is what I needed!

Thank you!

[Phi.Def]

I need to do time-consuming renders from AE (as opposed to Media Encoder which doesn't support premultiplied alpha exports). But I have a lot of work to do, so I need to continue using AE while it renders.

Looking through the page you linked to, it sounds like what I need to do is:

1) Add my renders to the render cue, set my render settings and filename

2) Save my AE project

3) Open the command prompt and enter the following command:

aerender -project c:\projects\project_1.aep (where the location and file name are those of the project I just saved)

Is that right?

[Phi.Def]

It's not working. Getting an error message even when using command prompt with admin privileges. Here's the command I issued and resulting messages:

C:\Program Files\Adobe\Adobe After Effects 2022\Support Files>aerender -project E:\Active Projects\Blue Moon Productions\Sobeys\Sobeys_Recognition Tour Sizzler\Sobeys_Recognition Tour Sizzler_96771\Video Editor\Project Files\After Effects\Sobeys_Recognition Tour Sizzler_96771.aep
aerender version 22.4x56
InitializeFileLogging failed
name : NVIDIA GeForce RTX 2060 SUPER
VendorId : 4318
DeviceId : 7942
SubSysId : 1072763992
Revision : 161
DedicatedVideoMemory : 8421113856
DedicatedSystemMemory : 0
SharedSystemMemory : 34332557312
MemoryBudget : 7615807488
AdapterLuid.LowPart : 68055
AdapterLuid.HighPart : 0
Flags : 0
DoublePrecisionFloatShaderOps : yes
ConservativeRasterizationTier : 3
CrossNodeSharingTier : 0
ResourceBindingTier : 3
ResourceHeapTier : 2
TiledResourcesTier : 3
NodeIndex : 0
TileBasedRenderer : no
UMA : no
CacheCoherentUMA : no
feature level : 0x00009100
feature level : 0x00009200
feature level : 0x00009300
feature level : 0x0000a000
feature level : 0x0000a100
feature level : 0x0000b000
feature level : 0x0000b100
feature level : 0x0000c000
feature level : 0x0000c100
MaxSupportedFeatureLevel : 0x0000c100
HighestShaderModel : 0x60
WaveOps : yes
WaveLaneCountMin : 32
WaveLaneCountMax : 32
TotalLaneCount : 2176
ExpandedComputeResourceStates : yes
Int64ShaderOps : yes
RootSignature.HighestVersion : 0x2
[620][Warn] [general] We are going to deprecate hostInfo access soon. Please use HostInfoController instead.
aerender SYNTAX ERROR: Illegal argument flag: Projects\Blue