Camera board • Re: libcamera-vid freezes when the

```
360 [0:28:41.396372226] [1402] DEBUG RPiDelayedControls delayed_controls.cpp:270 Setting Vertical Blanking to 5073 at index 1333
```

My command line is:
```
$LIBCAMERA_LOG_LEVELS=0 libcamera-vid --framerate 10 --width 640 --height 480 --inline -o udp://192.168.5.5:26000 -b 80000 --code h264 -t 0
```

Its variable when this will actually trigger setting the vertical blanking, but is there a way to fix it and not make it setable?

We calculate and set vertical blanking, horizontal (if available), exposure time and gain on every frame in the libcamera pipeline handler and IPA module. However, with a fixed framerate, you will find the VBLANK value will be set to the same value always, and this in turn means that the control value will not go into the kernel driver (and subsequently to the sensor over I2C) since there is no change to the actual value.

Statistics: Posted by naushir — Mon Feb 12, 2024 11:23 am

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