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December 09, 2019, 12:55:19 AM


Author Topic: 60fps video recording buffer constantly runs out  (Read 4518 times)

Offline reecord2

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60fps video recording buffer constantly runs out
« on: June 04, 2014, 11:17:19 PM »
Hi everyone, so I was trying some 60fps video the other day, and out of about 35 attempts, the video recording would last an average of 10-20 seconds before 'movie recording has stopped automatically'.  A few times I got above 30+ seconds, and sometimes less than 5.  It was on an empty, formatted card (multiple times), Sandisk Ultra 32gb Class 10.  Should I get a faster/bigger card?  I have a suspicion I've simply hit a hard limit on the recording speed of my camera.  Thanks!

Offline AndyCivil

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Re: 60fps video recording buffer constantly runs out
« Reply #1 on: June 05, 2014, 06:45:30 AM »
The card is fake. Send it / take it back and buy one from a reputable dealer, such as a photo store in your area or BH PhotoVideo.

Offline Craig

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Re: 60fps video recording buffer constantly runs out
« Reply #2 on: June 05, 2014, 07:45:09 AM »
The card is fake. Send it / take it back and buy one from a reputable dealer, such as a photo store in your area or BH PhotoVideo.

First try a low level format. When you format, there will be a box you have to check off that says "low level"
Now try and record your video.

@Andy.....we have had this discussion before about formatting. All my cards are low level formatted before each shoot. A wedding is booked this Saturday and all my cards will be low level formatted prior to shooting.
6D, T2i, Canon 600EX, 430EXII, and some other stuff my wife doesn't know about.

Offline AndyCivil

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Re: 60fps video recording buffer constantly runs out
« Reply #3 on: June 05, 2014, 10:48:16 AM »
You're right, clearing the memory in advance might save enough time - I admit I had temporarily forgotten about this: http://www.t2iforum.com/1/my-t2i-video-stopped-working/msg82833/#msg82833 But my advice still holds: a class 10 card that won't record video is clearly fake, and the OP should get a proper one.

Offline AndyCivil

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Re: 60fps video recording buffer constantly runs out
« Reply #4 on: June 05, 2014, 10:53:46 AM »
P.S.  You want a card that's fast enough to work properly without needing to do a low-level format for it to be fast enough. If you get into the habit of checking off that "low level" box (I think it's 'sticky' from last time) you'll one day end up like Michelle http://www.t2iforum.com/1/help!!!-cries/


Offline Craig

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Re: 60fps video recording buffer constantly runs out
« Reply #5 on: June 05, 2014, 04:47:01 PM »
Well Andy, we'll have to agree to disagree. Shooting this weekend with a 5DII, 6D, and 7D. All non fake cards will be low level formatted. There will be no tears, I back up my data.
6D, T2i, Canon 600EX, 430EXII, and some other stuff my wife doesn't know about.

Offline AndyCivil

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Re: 60fps video recording buffer constantly runs out
« Reply #6 on: June 05, 2014, 05:09:00 PM »
I don't think I really disagree with you, Craig. If your procedure is rigorous enough that you can be sure you'll never format over wanted data, then I don't blame you for low-level formatting prior to a wedding, just for that extra security that you won't get a full buffer.

But I wouldn't like to see "reecord2" fudging over the problem by using the low-level format trick, when the real problem is that he's been sold a fake card. Although I don't blame you for your policy, a genuine card won't need that (it'll be able to erase old blocks on the fly quickly enough).


Offline reecord2

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Re: 60fps video recording buffer constantly runs out
« Reply #7 on: June 05, 2014, 07:17:03 PM »
Thanks for all advice everyone!  I always low-level format, and the Sandisk card is from a physical Best Buy store, so as you can imagine I'm pretty bummed and mildly frustrated.  I'm under the impression Sandisk is a pretty reputable brand, but maybe I could try some other brands?  BTW, I only have this problem on 60fps video, 24 and 30 fps generally work without a hitch.

Offline AndyCivil

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Re: 60fps video recording buffer constantly runs out
« Reply #8 on: June 05, 2014, 09:57:34 PM »
Best Buy has a good return policy, so take it back. If they want a reason, show them chapter 6 of the manual that says a class 6 card is required, and show them that the camera won't record. I strongly suggest you order a Sandisk card from BHPhotoVideo the large online photo store. They know that you're going to record video and they won't source fake cards.

Canon recommends Sandisk cards as being the most compatible with the cameras, however they are also the most counterfeited brand on the market.

A technical aside (optional reading!): cards have an information register called a CID which can be read and interpreted to find the actual manufacturer. Unfortunately, you won't be able to do this on a regular computer, because the command sequence to read this info will instead return the CID of the interface (the internal USB hub). It has to be done on a raw hardware device such as a Raspberry Pi or some smartphones.

Note: even though the manual says class 6, I don't know anyone who thinks this is a good idea - the price premium for class 10 is small enough that it's a no-brainer.

There is a lot of advice on the Internet about working out if a card is genuine or not; none of it really matters because the most reliable way to tell, is whether it works in your application.

Historical aside (optional reading!): you may find some "fake testers" on the Internet. These programs are to detect flash drives that claim to be 8GB but are really only 2Gb (for example). This kind of fake was common in the past because most people didn't even use a fraction of their flash capacity and they never noticed. But this is not the kind of fake you have. These fake testers are of no use to you.