Blackmagic Forum

Hi,
On one clip in my project, I made animated speed changes, animated position and animated zoom, all defined in Edit (not fusion). I'm working on windows 10 with DR 19.0.3. Well, my computer is not very powerfull, using internal video card (intel UHD Graphics). But, using proxy files, bypassing color grades and fusion effects, in Edit, it works pretty well and all those animations for that clip play smoothly and do what I want (retime process set to Frame Blend).
But when I go to deliver and generate a render using youtube preset (so mp4 h.264 full HD), then play the render, there's a lot of jerks in the part with the animated zoom, just that part.
Any ideas why? And how to fix that?

Hi,
I found a workaround: I first set the animated speed changes, make a "render in place" and then add the other animations. No problem like that.

Probably because of limitations of VRAM on the internal GPU. Render in place, offloads the process by doing partial render of timeline before all effects and timeline is rendered, so that obvouslly helps. Render in place is an underrated feature. I use it sometimes myself.