Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: how big an sd card can be used
Document: I went online and updated Quicktime, downloaded VLC, and also downloaded the codec for Windows Media Player. Still doesn't work. It's telling me it can't read the file.Fifth problem: After putting the SD card back in, I tried to watch the video file and it displays a big message saying INVALID. So I formatted the card. After I did that I recorded a new short video of 15s and tried to watch that.
i buy it for its price and when i used it , it overpasses my expectitives about it.great camara, really good pics and the slow motion efecct is just amazing.seriously , the best handycam for that price..RE CO MEN DED.
THEY DON'T TELL you that!!! And if you don't use it, and walk -- the picture jumps all over the place!The icons in the menus aren't big enough. Plan on using a stylus - if you can FIND one! (I hope you have tiny fingertips...)Ditto when recording.
This is the second Toshiba X400 I've purchased in the last 3 months. Very nice. No..the first didn't break. I storm chase, so our crew has always used multiple cameras in the field, and we need the portability. We've used Sony before, but the Toshiba line is far better, rugged,  and not as pricey. The picture is very good, its easy to download, and so far, they seem very durable.
I purchased the X400 from Best Buy online. It had only been out a short whle and the feature set was compelling for me. Having been using a standard definition mini DV camcorder for years, this was my first entry into HD recording. My primary use was to record my son's gymnastics metts.I shot a brief video outside to get used to the controls. The results were amazing - crisp video with vibrant color. I was pretty psyched. Then I tried recording at the next gym meet.
Everything as advertised. Light, compact, awesome price and great picture. Need to buy memory flash card separately as it doesn't come with camera.
This camera is packed so thoughtfully, you think you are getting something terribly expensive!- the box is so gorgeous! And your anticipation is hard to control!! !But -- when you start trying it out, your anticipation wanes to disappointment...You must get an expansion memory card.
It is the exact same camcorder with the exception of having 16GB of built in memory. (The X400 had no built in memory but relied solely on SD card). Unfortunately it is exhibiting the same deficiencies as the X400. Unless I can get better results out of the video, this will be returned as well.The other issue worth noting with both the X400 and X416 is the battery life. It is pretty short.
So far my daughter lovers it. She's not a tech person but it was pretty easy for her to figure out, which is always nice to hear. I wish I would have checked here prior to buying the last camcorder. Not only dud I pay about $75.00 more, it wouldn't handle the 32GB SD card. Oh well, now I know where to go for great camcorder/camera's....
After about 20 minutes the filming automatically stopped and I could not get it to restart. So end video session.Third problem: After about 30 minutes of cumulative use, the battery was about half drained (two bars out of four). This was my first time using it, and immediately after a full charge!Fourth problem: I took the SD card out and plugged into my laptop and copied the video file on to my drive.
Answer: I have used a 16Gb card in it.  DO NOT BUY THIS CAMCORDER!! It has a known issue with it's auto-focus.