RED RAM 64Gb

[roryhinds]

Just wondering how much 2k & 4k footage you can store on the RED RAM?

Is this device upgradable as larger memory becomes available?

Can you offload the data on the RED RAM to a RED DRIVE while in the field using the camera? Or do you need a Macbook Pro?

Thanks
Rory

[Greg Voevodsky]

It's roughly 1 gig for 1 minute of 4k RAW at 24fps...

[Brook Willard]

4K REDCODE RAW = 27.5MB/s

[roryhinds]

so you should get around 35min of 4k on the RED RAM 64 (?)

[Brook Willard]

(1024x64)/27.5 = 2383.1273 seconds.

39.718788 minutes

39:43

[Anders Holck]

I think Rory is correct with the 35 mins.
A 64 GB drive will not offer 64 GB when formatted.
And the 27 MB/s does not include audio.

[Dave Cooper]

48k uncompressed is slightly more than 10megs per minute. I would guess 37min and that is leaving room for when the drive is formatted.

[Anders Holck]

48000hzx24bit/8/1024x4=562KB/s
33MB per minute or 1.1GB for 35 mins.

Actually I didn't see that brook actually stated 27.5 MB/s which should include audio.

I guess you are right about the capacity though. The Red camera uses FAT32 formatting. My 100GB drive has a 92GB capacity when formatted.
A 64 GB drive would be about 58.88 GB with the same statistics or 36:30 assuming a 27.5 datarate. Pretty close to your 37 mins.

[Jeff Kilgroe]

RED RAM formatting is going to work out differently than hard drives. It's FLASH based and memory sizing and addressing standards are in play. 1GB is defined as 2^30 Bytes as opposed to 1 billion Bytes as HDD manufacturers do it.

1GB = 2^30Bytes = 1,073,741,824 Bytes

As a comparison for 64GB:

FAT 32 formatted HDD: (1,000,000,000 * 64) / 1,073,741,824 = 59.6GB

FAT 32 formatted FLASH: 64GB. :)

Also figure approximately 8MB for FAT32 overhead. On some operating systems and various format procedures, HDDs often lose another 8 to 16 MB of space just within the allocation and partitioning of the drive.

But I've found over the years that if you want the real usable capacity of a drive after formatting and don't want to calculate out all those bits. Just take the advertised capacity -- like 500 GB. Multiply by the following and you'll get within about half a GB nearly all the time.

FAT32 - * 0.92
NTFS - * 0.91
NTFS4/6 - * 0.93
HPFS - * 0.932

Yes, my inner-geek is showing.

RED RAM @ 64GB capacity should store approximately 39.6 minutes of REDCODE RAW 4K @ 24fps with audio, assuming the 27.5MB/s covers the video plus audio data.

[Anders Holck]

Cool! You are geekier than me :-)