Pi Camera 120FPS
January 6, 2023, 11:35
Hi! I am trying to get a Raspberry Pi V2 camera to work at 1280x720 pixels @ 120 FPS - cropped to full resolution, but I can't get it to work at over 90. Has anyone had any experience in this area?
Never tried to get 120fps out of the pi camera… I’m not sure if the pi is even capable of 120 @ 720p?! Maybe at 360p? Are you simply recording the video or do you have live filters or cropping on it? This would also effect its frame rate.
I am cropping the frame
I was able to get it working cropped at 100FPS but it wasn't very straight forward
I don't think I can get any better as far as IMX219 is concerned
Why do you need to crop? Can you not use a native resolution?
I must have full resolution for my usage
But you are cropping each frame?
Yes. I changed the registers so that it outputs a cropped frame
Can you not simply specify the final resolution when you are first capturing the frame?
Another thing to consider would be the write speed of your sd card… I imagine the cpu would be your bottleneck, but it could also be your sd card.
I am not sure I understand your question. I am not cropping using the CPU, the frame is cropped at the sensor level according to registers
Ok, yes, i was referring to script cropping, but cropping it at the registers is the way to go.
Have you done any testing at 640x480? Reading a few quick reviews online it looks like people have only been able to get 120fps @ 640x480.... I'm guessing your on a rpi4? You could try some small overclocks if you have active cooling
Well I am glad to say that I am able to get to 100FPS at 1280x720, with cropping as a raw image. I am using a Jetson Xavier NX so it works properly
The theoretical value I came up with is 107.9FPS according to the data sheet, but I prefer 100 to avoid dropping frames