[Elphel-support] (no subject)

[Oleg]

Hello,

I have tried the way you suggested.I set the frame rate 25 fps,and the
> exposure time is 35ms.Then the frame rate is correct,but the picture
> of vedio is still bad in the natural light not the very low light.When
> I set the exposure mode to autoexposure,the exposure time is about
> 400ms.The vedio is normal then.But the frame rate is about 2 fps at
> that time.
>

What kind/name of lens do you have? Does it have adjustable aperture?
Check it. With the aperture wide open you should get exposure less than 1ms
at daytime.


> The camera can get 640*480 in 25fps just using 3M bandwidth,do you use
> Inter prediction or intra prediction in the camera? Which part is used
> as Caching the pre-frame?ddr sdram or sdram?
>

There's no inter/intra prediction.
The pixels from the sensor are buffered into ddr sdram before compression -
after compressor the image is written into the frame buffer accessed by the
cpu.

Best regards,
Oleg Dzhimiev
Electronics Engineer
phone: +1 801 783 5555 x124
Elphel, Inc.
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