Xiaomi Yi SD Card requirements

westsenkovec

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Hi!
I'm planning to buy the Xiaomi Yi cam and I'm not sure what SD card to buy.
Xiaomi recommends Class 10 but I know from personal experience that R/W speeds can differ even though the sd cards are both class 10.
I need a micro SD card for my phone to so I would buy two 64 GB class 10 cards (Kingmax MCSDHC64GB-C10). I just want to check it before ordering so I'm not unpleasantly surprised when I receive them.
What is the minimal write/read speed needed to be able to use the cam without having a bottleneck?
Thanks!
 

gente

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...the reading speed up to 80mb/s is ok, but the writing speed you need for saving on card with UHS Class 1 is only up to 10mb/s!
Note there are many fakes on this card from Kingston, look at youtube!
I only use UHS Class 3 microsd they are minimal 30mb/s writing, so you are on safe side:
For example: http://www.gearbest.com/memory-cards/pp_246797.html, but i think the cheaper 32GB version is big enough :)
 
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westsenkovec

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...the reading speed up to 80mb/s is ok, but the writing speed you need for saving on card with UHS Class 1 is only up to 10mb/s!
Note there are many fakes on this card from Kingston, look at youtube!
I only use UHS Class 3 microsd they are minimal 30mb/s writing, so you are on safe side:
For example: http://www.gearbest.com/memory-cards/pp_246797.html, but i think the cheaper 32GB version is big enough :)
No, the Kingstone I found locally is from an official dealer (60 months warranty) and the price is $24.
So I definitely need a U3 class? I would record max. 1080-60fps.

BTW, in that case, I would rather take this: http://www.mymemory.co.uk/Micro-SDXC/SanDisk/Sandisk-64GB-Extreme-Micro-SD-(SDXC)-Card-+-Adapter-90MB_s-Class-10-UHS-I-U3
Edit: I'm asking because I know Sandisk is reputable and they ship from the EU while I can't find any reviews on the OV. Do you have it?
 
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gente

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No, the Kingstone I found locally is from an official dealer (60 months warranty) and the price is $24.
So I definitely need a U3 class? I would record max. 1080-60fps.

BTW, in that case, I would rather take this: http://www.mymemory.co.uk/Micro-SDXC/SanDisk/Sandisk-64GB-Extreme-Micro-SD-(SDXC)-Card-+-Adapter-90MB_s-Class-10-UHS-I-U3
Edit: I'm asking because I know Sandisk is reputable and they ship from the EU while I can't find any reviews on the OV. Do you have it?
...i use this one and no problems until yet with quickness 2.3k videos: http://www.mymemory.co.uk/Micro-SDX...SDXC)-UHS-I-U3-Class-10-with-Adapter---95MB_s
...and orderded the ov card from gearbest it is a chinese manufacturer, not tested until yet because i am waiting the shipping comes to me.
But xiaomi also is chinese manufacturer and it is a great product. The bad are the fakes of original renowned cards (sandisk, kingston...) and electronics.
 
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westsenkovec

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...i use this one and no problems until yet with quickness 2.3k videos: http://www.mymemory.co.uk/Micro-SDXC/SanDisk/SanDisk-64GB-Extreme-Plus-Micro-SD-(SDXC)-UHS-I-U3-Class-10-with-Adapter---95MB_s
...and orderded the ov card from gearbest it is a chinese manufacturer, not tested until yet because i am waiting the shipping comes to me.
But xiaomi also is chinese manufacturer and it is a great product. The bad are the fakes of original renowned cards (sandisk, kingston...) and electronics.

Yeah, that's the thing, it has no reviews. I would order the "OV pro" if it had good unbiased reviews.

I think I will take the regular Sandisk Extreme (UHS-I U3) or Kingston (UHS-I U3).
 

mrbwa1

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Are you planning on doing any bitrate Mods? I have Class 4 cards that are fine with stock firmware (thy with do 1080p60 @ 25MBPS on my SONY Action Cam. The only reason I went to a Class 10 was to do the 35Mbit firmware. That requires 4.375 MByte/s write speed and my class 4 cards are testing at maybe 4.6 MByte/sec. I should try and do some recordings to see if they work okay.

My Yi with the 35Mbit firmware has a 16GB Toshiba Class 10 that says either 30 or 40 MB/s on it (read speed). It tested out at about 11 MBytes/s write speed, so should be plenty fast. I think I payed all of $7 on ebay. Usually with cards on eBay, genuine sellers will post the UPC in the appropriate field and you can cross-reference that via Google to make sure it's the stated product. Also, people selling genuine cards will usually say XXX sold on the item.

Been burned on the fakes before, but they are pretty easy to spot these days. If the price is too good to be true, it's a fake! With cameras, I look for genuine Kingston/Sandisk/Toshiba Class 10 cards. Not the Extreme or UHS ones, but just class 10. They are usually a lot cheaper and frankly, a certified Class 10 card should be able to handle an 80 Mbit stream which we will never get out of the Yi.
 
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westsenkovec

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Are you planning on doing any bitrate Mods? I have Class 4 cards that are fine with stock firmware (thy with do 1080p60 @ 25MBPS on my SONY Action Cam. The only reason I went to a Class 10 was to do the 35Mbit firmware. That requires 4.375 MByte/s write speed and my class 4 cards are testing at maybe 4.6 MByte/sec. I should try and do some recordings to see if they work okay.

My Yi with the 35Mbit firmware has a 16GB Toshiba Class 10 that says either 30 or 40 MB/s on it (read speed). It tested out at about 11 MBytes/s write speed, so should be plenty fast. I think I payed all of $7 on ebay. Usually with cards on eBay, genuine sellers will post the UPC in the appropriate field and you can cross-reference that via Google to make sure it's the stated product. Also, people selling genuine cards will usually say XXX sold on the item.

Been burned on the fakes before, but they are pretty easy to spot these days. If the price is too good to be true, it's a fake! With cameras, I look for genuine Kingston/Sandisk/Toshiba Class 10 cards. Not the Extreme or UHS ones, but just class 10. They are usually a lot cheaper and frankly, a certified Class 10 card should be able to handle an 80 Mbit stream which we will never get out of the Yi.

I don't know. That's the thing. I have no experience.
Plus, I need one for my phone so I can't buy cheap because if I do that, I will probably have to buy two new cards because the old ones suck.

I never buy things like that from ebay. I rather het it from a authorised dealer with warranty.

I was thinking of picking one of thease two:

http://www.mymemory.co.uk/Micro-SDH...B_s-UHS-I-U3-+-Adapter---Class-10#tab-reviews

http://www.mymemory.co.uk/Micro-SDH...SDHC)-Card-+-Adapter-90MB_s-Class-10-UHS-I-U3

But I think I will take this one:

http://www.mymemory.co.uk/Micro-SDX...D-(SDXC)-Card-+-Adapter-48MB_s-Class-10-UHS-I
 

mrbwa1

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That site has write speed listed: Just remember that are MB (megabytes) so multiply by 8 to get megabits. The Yi firmwares are stable at 35 Mbit so you need a write speed of 35/8 = 4.375. Any of the good brands are fine and you can save a few quid on the regular class 10 as opposed to the Extreme 80/90 MB/s (notice the read speeds aren't actually that fast as listed on the site. You don't gain anything by getting the faster cards unless you happen to have a phone that will do say 4k video with an insane bit rate (class 20 cards are guaranteed 10 MB/s write (80 Mbit) so you would have to have higher than 80 Mbit to cause issues.

There used to be more issues with cards because they were either slow or really expensive, but the Extreme cards are really for ultra high end DSLRs where folks are running 20+ Megapizel RAW images at 200+ MB per file at 6-10 FPS oe high end 4k video cameras that can do 100+ Mbit. They will gladly sell you that higher end card to make a little more $$.

I am using the 16BG version of this card in my Yi with the 35Mbit customer firmware: http://www.mymemory.co.uk/Micro-SDH...-Micro-SD-{SDHC)-Card-Class-10-UHS-I---40MB_s

Any of your choices would be good. The price differences aren't more than a pound or 2.
 

ctrl

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Greetings everyone, just wanted to know if there's anyone here who could tell me if this should work on the yi cam?

My situation is i've had this card for some time now and have been using it with the yi dashcam recording @1080p 60fps. It worked well with it and i just tried using it with my yi cam and all my video files splitted randomly.

If tried formatting the card through windows and the camera. Restored the camera. Forced it to format the card to fat32 too.

Any thoughts on what else i can do? It's really not more on making the card work at this point, but knowing what's wrong with it.

Thank you and my apologies for the lenghty post.

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