How to export Viewport GL visualizer PyroFX output into PNG?

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Anybody knows how to write out into PNG the animation frames the OpenGL viewport visualizer shows me?
This out into PNG:



I have pyrobakevolume1. It plays a beautiful animation and I don't need renderer, because it looks already perfect for pixel art.

Where ever I roll the camera and play my 200 frames of PyroFX fire, it should write out that exact GL viewport angle into PNG. Or some image format I can convert into PNG.

Is it possible?

Or should I use a third party software like ScreenRecorder?
I'm going to export the animation into OpenVDB for 3ds Max to render this fire in Arnold, because at least that I know, how.

But rotating the GL Viewport into an arbitrary exact angle and saving out everything from that - designated AREA? - like 'Area-render' in Maya/Max framebuffer, would be very excellent! Because it would be instant and the GL visualizer fireball already looks exactly the quality I need.

Attachments:
pyrobakevolume1-to-PNG-how[1].png (120.7 KB)

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Looks like a use case for the OpenGL ROP node [www.sidefx.com].

Just needs to setup a camera with the orientation you are looking for, then render scene using OpenGL node to PNG sequence.
Houdini Pipeline Supervisor @ TAT Studio
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