Hi,
I installed yi-hack-Allwinner-v2 on my Yi Home Camera

Firmware Version: 0.2.6
Base Version: 12.0.35.8_202211241029
Model Suffix: y291ga
Serial Number: RFUSY6217Z0853221206

I enabled MQTT and Motion Detection (Camera Settings)

Using a MQTT client I subscribed to all topics of "webcam"
I see :

webcam/stat/camera/save_video_on_motion yes
webcam/stat/camera/motion_detection yes
webcam/stat/camera/sensitivity medium
webcam/stat/camera/ai_human_detection no
webcam/stat/camera/face_detection no
webcam/stat/camera/motion_tracking no
webcam/stat/camera/sound_detection yes
webcam/stat/camera/sound_sensitivit 80

After a motion is detected I receive a message:

Topic: webcam/motion_files
{
"start":"2023-04-20T11:30:59+02:00",
"end":"2023-04-20T11:31:59+02:00",
"files":[ ]
}

"files" is always empty.

But I see that /tmp/sd/record/ contains the captured video.

I have several Yi Home cameras with different yi-hack versions and the event motion_files always contains the name of recorded files.
Many thanks!

Cheers.