Blackmagic Forum

I'm using the new Magic Mask. It works well for me in the color page, but when I go to render the timeline, it generates a pre-processing step that takes hours to process the Magic Mask before the actual render starts. On a timeline with 4 shots totaling 40 seconds, where only two of them use Magic Mask, the pre-processing step (which says "tracking") before the render took 6 hours.

I'm using a PC with an AMD Ryzen 9 3900X 12-Core Processor @ 3.80 GHz, 128 GB of RAM, and a NVIDIA RTX 3070 graphics card.

So here's my thinking:

If it's taking 6 hours to create the Mask on Deliver, then it would have taken 6 hours to create it on Color.

If it's being created on Deliver, then it wasn't created on Color.

Actually, I'm seeing similar behavior already on 19.1.4. Track on color page, takes some time.. Then (by mistake or otherwise) do something that triggers a retrack (so many things do this), start render, tracking of the (previously tracked) masks takes longer when done as a prestep to render..

If you change timeline resolution while rendering it does re-track the AI stuffs.

Jim Simon wrote:So here's my thinking:

If it's taking 6 hours to create the Mask on Deliver, then it would have taken 6 hours to create it on Color.

If it's being created on Deliver, then it wasn't created on Color.

On the color page the Magic Mask track render wasn’t slow it took les than five minutes, but when I sent the timeline to render it took 6 hours to reprocess the magic mask track before render and the render about 2 hours and a half for a Ultra HD 40 seconds timeline with four clips, two with Magic Mask. It shouldn’t reprocess the Magic Mask tracking again