Oh, nice.  Found it, and there's a $38 dev board so this should be easy=20
to tinker with.

Cheers,
-Neil.




On 3/8/2018 9:13 AM, Isaac M. Bavaresco wrote:
> Neil,
>
>
> An  ARM Cortex-M7 like Atmel's ATSAME7, ATSAMS7 or ATSAMV7 should be enou=
gh.
>
> They are 32-bit Cortex-M7 @ 300 MHz with 384 KiB SRAM, CIS (CMOS Image
> Sensor) interface, HSMCI (High-Speed Multimedia Card Interface),
> High-Speed USB and DMA.
>
> The CMOS Image Sensor can capture real-time video and the HSMCI
> interface should be able to push the SD-Card on full bandwith.
>
> I don't know if the ADC is fast enough to capture analog video.
>
>
> Cheers,
>
> Isaac
>
>
>
> Em 07/03/2018 23:22, Neil escreveu:
>> I want to record video of at least 1.0MP to SSD (or other memory) for
>> about 3-5 minutes.  15FPS is fine.  But I really want to avoid SBCs
>> because of the OS (and more specifically the boot time), so wondering
>> what it would take to do this with a microcontroller.
>> I'm looking at camera modules similar to this...
>> https://www.aliexpress.com/item/600TVL-1-4-1-8mm-CMOS-FPV-170-Degree-Wid=
e-Angle-Lens-Camera-PAL-NTSC-image/32570417705.html
>>
>> I believe (haven't yet found a clear answer) that these cameras do 24
>> bpp (Is this correct?), and if so I'd need 1 MP x 3 bytes x 60 secs x 5
>> mins =3D 900 MB to store raw data.
>> That's no prob with an SD card, but I expect bandwidth will be an issue,
>> so I'd need to compress it.  This is where I draw a blank... what does
>> it take to compress video?
>>
>> I'm clueless on video, so wondering if a microcontroller (say PIC32 or
>> ARM) would be able to accept TTL NTSC video at this rate and compress
>> it, and then store it.  Or is there a specialized processor I can use to
>> accept the NTSC video stream and store it to SD?
>> Should I use some other protocol other than NTSC for this perhaps?
>>
>> Cheers,
>> -Neil.
>>

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