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 Post subject: PS3 recording space
PostPosted: Tue Feb 15, 2011 3:42 pm 

Joined: Sat Feb 12, 2011 12:38 pm
Posts: 82
Hi folks:

I'm trying to plan for drive space, so I'd like to know how much video storage space is required (per minute for example) for both 4 and 6 Sony PS3 cameras recording Bayer video at 640x480.

Thanks,

Michael


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 Post subject: Re: PS3 recording space
PostPosted: Tue Feb 15, 2011 11:16 pm 

Joined: Sat Feb 12, 2011 12:38 pm
Posts: 82
OK, here's what I estimate:
13,824,000 Bytes @ 60fps per camera

Assumes 320x240 Bayer at 24 bit depth per frame

viewtopic.php?f=7&t=1950&p=4455&hilit=bayer&sid=b021bc4031b03e5725e2cec026b27848#p4455


viewtopic.php?f=2&t=4212&p=5745&hilit=bayer&sid=b021bc4031b03e5725e2cec026b27848#p5745


55296000 Bytes/sec for 4 cameras

82,944,000 Bytes/sec for 6 cameras

about 10 seconds per gigabyte

or 6 gigabytes per minute

or 360 gigabytes per hour

a 256 GB SSD costs about $500


Anybody know anything different?

Michael


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 Post subject: Re: PS3 recording space
PostPosted: Tue Feb 15, 2011 11:37 pm 

Joined: Sat Feb 12, 2011 12:38 pm
Posts: 82
The Raid 0 write speed specs on this drive looks pretty good - may good enough for the 6 camera option:

http://www.overclockersclub.com/reviews ... _xt_500gb/


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 Post subject: Re: PS3 recording space
PostPosted: Tue Feb 15, 2011 11:54 pm 

Joined: Sat Feb 12, 2011 12:38 pm
Posts: 82
The Raid 0 write speed specs on this drive looks pretty good - may good enough for the 6 camera option:

http://www.overclockersclub.com/reviews ... _xt_500gb/


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 Post subject: Re: PS3 recording space
PostPosted: Wed Feb 16, 2011 8:17 am 

Joined: Sat Feb 12, 2011 12:38 pm
Posts: 82
I've got a Blackmagic Intensity card for HD uncompressed capture, and it tests my current RAID 0 at 136MB/s write and 207 MB/s read.

That might almost be enough for 6 cameras, but I'll test it. My plan is to upgrade the raid if it isn't fast enough.

Michael


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 Post subject: Re: PS3 recording space
PostPosted: Thu Feb 17, 2011 3:57 pm 

Joined: Sat Feb 12, 2011 12:38 pm
Posts: 82
Hi folks:

I've installed the Seagate Momentus XT drives, and I'm a little disappointed:

201.8MB/s read speed and 160.1 MB/s write speed

It might be enough for 6 cameras, but I would have preferred more headroom. I'm really trying to avoid having to get a new computer with super-expensive SSD's.

I should be getting my cameras tomorrow, so maybe this weekend will be good for testing. I've already got my funny green shirt, and my funny blue tights should be here tomorrow. Needless to say, I won't be posting any video of me in that getup. I may post video of my dancers at some point.

Letcha know how the camera testing goes,

Michael


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 Post subject: Re: PS3 recording space
PostPosted: Thu Feb 17, 2011 5:40 pm 

Joined: Sat Feb 12, 2011 12:38 pm
Posts: 82
OK, I ran the drive speed test multiple times and got values between 147.7 and 199.9 MB/s with bi-modal peaks at 175 and 195 MB/s. I don't know why it's bimodal, but I'm concerned about the lowest end and the implication for dropped frames.

I've got a USB3 card that says it requires XP SP3, and I've only got SP2 (Windows won't let me upgrade to SP3, so I'll have to reformat the boot drive and reinstall all mysoftware if I need SP3). I'm hoping that the USB2 option will run under SP2 otherwise I'm going to get a USB2 card instead.

More as it develops,

Michael


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 Post subject: Re: PS3 recording space
PostPosted: Fri Feb 18, 2011 3:13 pm 

Joined: Sat Feb 12, 2011 12:38 pm
Posts: 82
Hi folks:

The dark blue tights and green long sleeve shirt arrived today, and they're great:

http://www.baseballsavings.com/customer ... RY_ID/1808
http://www.baseballsavings.com/customer ... RY_ID/7811

My PS3 eye cameras and USB extender cables arrived today. I'm hoping to install the USB 3 card tonight and maybe start testing the cameras. I had a problem with the getting to the website for the camera drivers in IE, so I'll try to download it on my laptop and see if that works.

I also had to get extra power Y-cables today since the USB3 and new graphics card both need extra juice from the power supply.

When I was at the computer store, the guy told me that I might not see much greater speed if I got SSD drives with my SATA3 RAID controller. I'll see how well the Seagate hybrid drives do first before I exchange them for SSD drives. I really don't think I can afford to buy a whole new Mega-rig just for the 6 camera setup.

More info as I test things,

Michael


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