How fast is HD 720p video recorded onto the memory card?

PC Hobbyist

PC Hobbyist

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I read you can use a class 4 or higher SDHC card to record HD video. I have a new Canon Powershot SD780is, which records HD video at 720p.

I have two questions:

1. How fast is the video recorded onto the card?
2. Will I notice a big difference between a class 4 and a class 6 SDHC card?

BTW - I had a 16gb Transcend SDHC class 6 card (from Amazon). It died after 5 weeks - the pictures simply disappeared and the card is not readable anywhere. I researched the problem online, and found that apparently A LOT of people are having that exact same problem with the 16gb line of Transcend cards. I was really surprised to read how many complaints there were. So, my advice to everyone here is to stay away from Transcend 16gb cards!!! Apparently the 8 gb cards are okay, but I still wouldn't trust them after my experience.

Thanks for any help with my two questions.
 
High Definition-----Standard Definition
1,280 x 720---640 x 480---320 x 240
30 fps------------- 30 fps---------30 fps
Movie size (KB/sec.)---2,955---1,316---394
2GB 10 min. 53 sec.---23 min. 49 sec.---1 hr. 13 min. 10 sec.
8GB 43 min. 32 sec.---1 hr. 35 min. 11 sec.---4 hr. 52 min. 24 sec.
 
Last edited:
Laquer Head said:
High Definition Standard Definition
1,280 x 720 640 x 480 320 x 240
30 fps 30 fps 30 fps
Movie size (KB/sec.)---2,955---1,316---394
2GB 10 min. 53 sec.---23 min. 49 sec.---1 hr. 13 min. 10 sec.
8GB 43 min. 32 sec.---1 hr. 35 min. 11 sec.---4 hr. 52 min. 24 sec.
Click to expand...
Wow - thanks! Good info to have!
So, it looks like my camera would record HD 720p at about 3MB/sec (which I guess is why you need at least a class 4 card).

The cost of a Kingston 16gb SDHC class 4 or class 6 is the same online. On ebay, I can get the class 6 for the same price Amazon offers the class 4. So, I guess I'll go with the class 6 Kingston card from ebay.

I've never used Kingston for SD cards (only for RAM), but I suppose they are good quality cards.
 
PC Hobbyist said:
Wow - thanks! Good info to have!
So, it looks like my camera would record HD 720p at about 3MB/sec (which I guess is why you need at least a class 4 card).

The cost of a Kingston 16gb SDHC class 4 or class 6 is the same online. On ebay, I can get the class 6 for the same price Amazon offers the class 4. So, I guess I'll go with the class 6 Kingston card from ebay.

I've never used Kingston for SD cards (only for RAM), but I suppose they are good quality cards.
Click to expand...

Yeah.,I swear by Lexar but Kingston is good and also the new SanDisks. Depending where you live, SanDisk had some great sales/rebates on 4,8 and 16's in the last few weeks.

Maybe it was just in Canada?! not sure
 
I live in Germany. I haven't seen any specials here on SanDisk cards. I guess I'll give the Kingston one a try. I just hope it really is a Kingston card. ;) I was surprised to see the price for Kingston lower than for Transcend cards. Here is the link - if you're curious.
Thanks again for your help!
 
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