Why not use a wifi IP canera? you can get one for less than $40.
http://hackaday.com/2018/03/05/customising-a-30-ip-camera-for-fun/



Just my $0.02,

Jean-Paul
N1JPL



> On Mar 7, 2018, at 11:31 PM, Neil <picdude3@narwani.org> wrote:
>=20
> I discovered that too.  Seems that the TTL NTSC means NTSC analog output=
=20
> with TTL serial control.
> I'll need to figure out how fast that ADC would need to be.
>=20
> I now see JPEG camera modules... I need to figure out the protocol for th=
at.
>=20
> Cheers,
> -Neil.
>=20
>=20
>=20
> On 3/7/2018 11:00 PM, Jean-Paul Louis wrote:
>> Neil,
>> That camera has only analog output, so you will need a fast ADC to recor=
d it.
>>=20
>>=20
>>=20
>>> On Mar 7, 2018, at 9:22 PM, Neil <picdude3@narwani.org> wrote:
>>>=20
>>> 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-Wi=
de-Angle-Lens-Camera-PAL-NTSC-image/32570417705.html
>>>=20
>>> 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?
>>>=20
>>> 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 t=
o
>>> accept the NTSC video stream and store it to SD?
>>> Should I use some other protocol other than NTSC for this perhaps?
>>>=20
>>> Cheers,
>>> -Neil.
>>>=20
>>> --=20
>>> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
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>>> http://mailman.mit.edu/mailman/listinfo/piclist
>> Just my $0.02,
>>=20
>> Jean-Paul
>> N1JPL
>>=20
>>=20
>>=20
>>=20
>=20
> --=20
> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist


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