why my camera tracking takes too much time in After effect 2024

[edit station 02]

why my camera tracking takes too much time in After effect 2024.

I am using windows 11

12th Gen Intel(R) Core(TM) i9-12900K 3.20 GHz Processor

128 GB (128 GB usable) RAM

NVIDIA Geforce RTX 4070 Ti

 footage resolution is 2560*1440

For 30 sec video 3d camera tracker takes approx 8 to 10 min.

[Rick Gerard]

The amount of time it takes the camera tracker to analyze a shot and solve a camera depends on the frame size, the frame rate, and the type of shot. It takes at least four times longer to analyze 4K footage than it does to analyze HD footage because there are four times more pixels. It takes twice as long to analyze 60 fps footage than it does to analyze 30 fps footage. 

30-seconds is a very long shot. The average length of a shot in an action movie is 4 seconds. It's about 12 seconds in a documentary. Make sure you are not tracking unnecessary parts of a shot. 

Motion blur, jerky camera movement, dramatic lighting changes, and the lack of a good amount of fixed geometry that has sufficient detail in a shot complicate the analysis and increase the chances for a tracking failure. 

Eight to ten minutes to analyze a 30-second shot is not at all unreasonable, even on a powerful machine. Other apps running in the background, improper RAM allocation, or even the codec used for the footage can also increase the time it takes to analyze a shot. You can figure out if the codec is the problem if you try rendering a ProRez copy of the footage and compare the tracking time with the original footage. You may see significant performance gains if the original footage is an MP4 or H.265 original. 

[edit station 02]

Thank you for reply. i am using png sequence from 3d  software. not 4k but 2.7K footage with 30 fps. Footage is clear, camera movement is also smooth, no motion blur and no dramatic lighting changes. RAM allocated for adobe application is 104 GB. is any setting wchich i am missing?

[Rick Gerard]

Memory allocation for other apps should usually be a whole number multiple of 4 GB. 

Eight to ten minutes is not unreasonable for a fairly powerful system. I just tracked a 12-second 4K shot, and it took about 9 minutes. 

If your image sequence came from a 3D app, you should be able also to get the camera data. It is also very easy to create unrealistic perspectives and parallax shifts in many 3D apps, so you may not get an accurate track. 

[edit station 02]

Thank you for reply.