IMX307 Decimal Framerate

[MacDaddyFPV]

Hi,

I am looking to add more settings support to openhd for the imx307 camera. I noticed that the newer firmware of the imx307 uses a decimal frame rate. Are you able to explain the difference between standard and decimal frame rate? Is it just 60fps would be 0.6 in decimal?
Thanks
Danny

[veye_xumm]

@MacDaddyFPV

http://wiki.veye.cc/index.php/CS-MIPI-X_i2c#new_version_videofmt_write

• 60fps

./cs_mipi_i2c.sh -w -f videofmt -p1 1920 -p2 1080 -p4 60.0

• 0.5fps

./cs_mipi_i2c.sh -w -f videofmt -p1 1920 -p2 1080 -p4 0.2

[MacDaddyFPV]

@veye_xumm thank you for the reply.

I understand how to apply the settings.

What I don't understand is what decimal settings can be used on the camera. What is the relation of decimal frame rate to standard frame rate?
What decimal frame rate should be used for best performance on 1080p, 720p ?

Thanks

[veye_xumm]

@macdaddyfpv

@macdaddyfpv said in IMX307 Decimal Framerate:

What is the relation of decimal frame rate to standard frame rate?

The decimal frame rate is an extension of the original function.
It support finer parameter configuration. Support for frame rates less than 1, allowing for exposure times of more than 1 second.

@macdaddyfpv said in IMX307 Decimal Framerate:

What decimal frame rate should be used for best performance on 1080p, 720p ?

get and set current video format，for example:
19201080@10fps
1280720@60fps
640*480@130fps

This is the maximum frame rate supported by the CS-MIPI-IMX307 and is the default setting. I don't think it is necessary to modify the frame rate at all if not for longer exposure time for better low light effect.

[MacDaddyFPV]

@veye_xumm thank you for the further explanation. After reading this and your previous post it makes sense now. Very Much appreciated.

[veye_xumm]

@macdaddyfpv You are welcome.