I've found a work around finally.

1. re-encode the video on PC
2. play the video on Android with mpv within below configurations (to support 120fps)

hwdec=mediacodec
vo=mediacodec_embed

ahh, I see.. so SVP relies on CDM to work on Android 12?

here is the full content:

https://drive.google.com/uc?export=view&id=1qPh-6ipKZai-PAIa_EGKr_ZZO0sO3GW1

here is my device's info:

https://drive.google.com/uc?export=view&id=1SVk0RJfh_qyOalBkCrfJi636ys18xT_-

My device is HONOR BRT-AN09, it could run SVP Ungoogled version smoothly before the system upgraded to Android 12.

The error message is as the sceenshot attachment shows.

Right now I'm living in China and the device is vendor-ed by Huawei, so the error might be due to some policy restriction. And I have tried connecting a VPN and reinstalling the App, but still cannot work.