Processing speed dropped from 7 fps to 1 fps mid-export

Topaz Video AI General
1

I’m working on a project where I am trying to upscale an older shot-on-videotape (i.e. interlaced) HD video that was originally encoded in Apple Intermediate Codec (see screenshot) at 29.97 fps to make it a 4K 59.94 fps file.

When I started the encode, I was getting processing rates of 7 frames per second and an estimated export time of 75 minutes. I came back to it about 2 hours later, and it’s still processing, with the export dropping to 1 frame per second. It’s only 70% done, and still has 150 minutes left.

What gives? Why would the export start that fast and then drop so precipitously? I’m on a 2021 MacBook Pro, M1 chip with 32 GB of RAM.


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2

Total time ended up being 3 hours & 41 minutes.

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3

If you were processing with the model settings on Auto, adjustments made during export could be the reason for the speed change.

4

What’s the storage you are using? That sounds like what happens when my SSD cache gets filled.

5

I am using the SSD on the MacBook Pro.

6

Since that SSD is soldered onto the motherboard, and no one seems to have done the kind of testing I am thinking of on such a Mac book, I cannot know how your SSD will act once the cache is filled—or if the cache can even be filled.