MxR and Scandisk 32 problem

[Craig Seeman]

Your math is WAY OFF.
Don’t confuse BYTES with BITS.
8 BITS to 1 BYTE

XDCAM is 35mega BITS which is a little over 4 mega BYTES
Sandsik Ultra 2 can hit about 65mega BITS a second which is PLENTY FAST enough.

Please understand I have been using them for 3 months without a single bad clip.

The cards say Class 2 on them but those ratings really mean little for many reasons.
TEST and you know.
Many… MOST Class 6 cards aren’t fast enough.
I suspect Sandisk (also the maker of SxS cards) is deliberately playing marketing games with their ratings.
I think they made sure their cards work in EX (and JVC HM which also uses EX codec).
They’ll make their money NOT from the very few reusable SxS cards but from people buying SDHC cards and saving them like tape (or XDCAM disc).

[Rafael Amador]

Just back from a two weeks trip.
Two of my SanDisk 16GB Ultra II Class 4 died and are full of material that are impossible to shoot again.
One of the cards have been working well for one week, the other died the first day I’ve used it.
They just don’t show up in the Mac, and in the camera they tell me they need to be restored, but no way to restore it.
I will try to recover the media with a PC, but from now on I will think twice before to use other than the SONY cards.
I bought the crds through Amazon so they shouldn’t be fake (?).
Cheers,
rafael

http://www.nagavideo.com

(and here some clips for the friends: https://www.vimeo.com/2694745 )

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[Michael Palmer]

but no way to restore it.
What do you mean Rafael ? YOU CAN’T EXECUTE THE RESTORE?

I hope you can get your footage.

Michael

[Chris Babbitt]

I’m sorry to hear that, Rafael, especially since I also bought my cards from Amazon (Blu Proton). Which Amazon vendor did you purchase yours from? Were they bulk-packaged or individually packaged?

[Craig Seeman]

[Rafael Amador] “I bought the crds through Amazon so they shouldn’t be fake (?). “

Buying on Amazon is not always the same as buying FROM Amazon. Many Amazon pages link to dealers. Almost Ebayish.

I wouldn’t buy cards on Amazon. I buy from local dealers I know. If I were to buy online it would be from dealers with hundreds or thousands of good reviews on PriceGrabber for example.

Like this

or this

[Rafael Amador]

[Michael Palmer] “What do you mean Rafael ? YOU CAN’T EXECUTE THE RESTORE? “
Hi Michael,
Yeap. In camera one of the cards say “Media needs to be restored’ but don’t offer the option to restore.
The other it shows the “Restore media now?”, but when I check “yes’ I get “restore media fails”.
I don’t think is any fake media issue. I think more about a problem when spanning clips in two cards.
Normally I change the slot manually before the card get full. This time, with both cards, my assistant was using the camera and he was not aware of this.
I’ve got a USB flash reader, tomorrow I will look for a PC to see if i’m lucky. i’ll let you know
Cheers,
rafael

http://www.nagavideo.com

(and here some clips for the friends: https://www.vimeo.com/2694745 )

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[Craig Seeman]

Have you tried pulling the cards out and putting them back in the camera?
Have you tried using the Update command on them (exists in EX3 but new to EX1 with version 1.11)?

[Dano Motley]

I will call sandisk this morning and let you know what I hear in regrad to the cards only being able to write 11 mbs (too slow for the ex3) as opposed to the advertised 15 mbs.

Dano

[Craig Seeman]

They write 9MB a second and read 15MB a second stated on package.

9MB is 72mb a second which is well beyond 35mb a second needed for EX.

My tests showed a write of about 65mb a second though.

We have SCORES of people on this site who talk from EXPERIENCE.

They will likely tell you 9 MEGABYTES which is WELL BEYOND what is needed for EX but if you don’t understand the difference between a BIT and a BYTE that won’t help you.

Sandisk Ultra 2

Fast read/write speeds of up to 15MB/second
Note: 1 megabyte (MB) = 1 million bytes

XDCAM 35Mbps is 4.3MBs

[Dano Motley]

Hi Craig,

I spent several hours with the owner of MxM cards, Marek, yesterday in regard to the sandisk 32 gig class 4 card not working. After many tests he explained that the write speed is way too slow for the ex 3. The result for the write speed is, on average,11.23 for the sandisk 32 gig card. I would post the actually test chart but I can’t figure out how to include it in this bbs. If it is possible to do so let me know?

As of now…the scandisk 32 class 4 cards that I have DO NOT work with the Sony EX3.

Dan