What cameras do you use?







On 12/25/2014 12:49 PM, Craig Smith wrote:
> Season’s Greetings TC-LUG’ers,
>
> I run a DIY network of security cameras that work in two parts.
>
> FTP (or server pull)
>
> A number of cameras send jpeg images to server several times a minute.
>
> FFMPEG
> Once a day, read last 24hrs of jpegs and write out the mp4 video.
>
> Calculating the mp4 files takes most of the time, preventing higher
> frames-rates, increasing sever load (impacting other uses) and delaying
> availability of the final video.
>
> QUESTION
>
> Since this is disk-intensive, I trust performance would improve if Jpegs
> were written-to and read-from solid-state drive (SSD) as opposed to
> traditional spinning mechanical-platter hard disk (HD).I plan to
> continue writing the final MP4 to HD.Looking at RAID for faster reads
> serving the final product.
>
> I understand SSD are faster, quieter, more reliable, and uses less power
> than HD (compelling arguments) but have a limited number of read-write
> cycles before failure and are prone to fail on power outages.
>
> http://en.wikipedia.org/wiki/Solid-state_drive#Comparison_with_other_technologies
>
> If I run 5GB per day through a 120GB SSD what’s the expected MTBF?
>
> Otherwise, more ram and a faster cpu should help.Any system design,
> hardware, or architecture tips?
>
>
>
> --
> Craig A. Smith mailto:craigallynsmith at gmail.com
> <mailto:craigallynsmith at gmail.com>
>
>
>
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