Model is scale up and down

Why does my model scale up by about 3-4% when I perform an action like opening my mouth or blinking?
Video Link: ScaleModel.mov - Google Drive

Again minor tracking issues that are usually not visible on more forgiving models, You can try the approach described in another thread

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Why does my model still scale up and down when I blink, even though I have not used (or have disabled) the trigger blink? Could this be a minor tracking error?

Yes, blinking can product errors in tracking.

Good afternoon Mr.Igor,
Thank you for your confirmation.

We are trying to check this error with google meet model at the same time.
However, I cannot confirm the same phenomenon in the google meet model.

Blinks are not tracked, but dummy blinks are used. Is the face still shaking finely due to the blink movement itself? Or is it because the entire face is being tracked?

Thank you so much.
Looking forward your information.
Goole Meet Model

DeepAR model in our system

Good afternoon Mr.Igor,
Thank you for your confirmation.

We are trying to check this error with google meet model at the same time.
However, I cannot confirm the same phenomenon in the google meet model.

Blinks are not tracked, but dummy blinks are used. Is the face still shaking finely due to the blink movement itself? Or is it because the entire face is being tracked?

Thank you so much.
Looking forward your information.
Goole Meet Model
DeepAR model in our system

Google Meet uses its own tracking which isn’t related to the tracking DeepAR offers.