Hello all,

Is there an event callback for when the frame changes when caching/saving to disk (Pre-Frame)?

I know of the "Pre-Frame" script which executes before each frame is cached, however is there a way to hook in to any "Pre Render" event in the Houdini session so that I don't need to set a "Pre Frame" script on every ROP?

Any ideas welcome, thank you

You can link a script to the frame change of the playbar.

This doesn't get invoked when Caching to Disk, which is the crux of my issue. The frame isn't actually changed when caching/writing IFDs.

Unfortunately having global scripts for these render events is a long requested feature.

At this point the "best" you can do it is to use a ROP render callback (hou.RopNode.addRenderEventCallback()). They will work, however you're left with the tediousness of attaching your callback functions to all ROP nodes on hip file load, or on node creation