|
|
|
|
|
|
|||||||||
 |
|
|
Thread Tools | Search this Thread |
November 27th, 2011, 06:58 PM
|
#1 |
|
Major Player
Join Date: Sep 2004
Location: North Hollywood, Atlanta
Posts: 437
|
If SDHC card is 20mps, and camera is 24mps recording. Hows that working?
I just realized my GH2 SDHC memory card is only a 20mps card. IF the GH2's 24p mode records at 24mps then its data rate exceeds the memory card. Yet i am able to record video w/o any warnings. I wonder though, how this is working? Is the camera making a sacrifice?
__________________
Tyson X |
|
|
|
November 27th, 2011, 08:02 PM
|
#2 |
|
Major Player
Join Date: May 2007
Location: Alpharetta, Georgia, USA
Posts: 760
|
Re: If SDHC card is 20mps, and camera is 24mps recording. Hows that working?
The answer is most cards from a reputable manufacturer exceed the advertised specification. To put it another way, the advertised specification is the absolute MINIMUM that the card will do. The manufacturer has built in a margin of error. So while skating on the edge, so far the card has been fast enough to let you get away with it :-) But now that you realise that is the situation, are you comfortable with that?
|
|
|
|
|
November 27th, 2011, 08:18 PM
|
#3 |
|
Major Player
Join Date: Sep 2004
Location: North Hollywood, Atlanta
Posts: 437
|
Re: If SDHC card is 20mps, and camera is 24mps recording. Hows that working?
Thanks. Nice answer. Good to know... I was just wondering if it was dropping frames to accomplish the recording or something. I did notice that when shooting RAW stills after 2 or 3 shots it freezes up for about 20 seconds while saying writing to card. Guess thats where a faster card helps for sure.
__________________
Tyson X |
|
|
|
|
November 27th, 2011, 08:32 PM
|
#4 |
|
Inner Circle
Join Date: Aug 2006
Location: Efland NC, USA
Posts: 2,322
|
Re: If SDHC card is 20mps, and camera is 24mps recording. Hows that working?
Look carefully and you will see the card is rated at 20mB/sec not 20mb second. 20mB/sec is about 160mb/sec which is much greater than what the camera requires.
__________________
http://www.LandYachtMedia.com |
|
|
|
|
November 27th, 2011, 09:18 PM
|
#5 |
|
Inner Circle
Join Date: Dec 2004
Location: Arlington, TX
Posts: 2,231
|
Re: If SDHC card is 20mps, and camera is 24mps recording. Hows that working?
Yes, megabits and megabytes. The codec is in megabits (1/10th the size)
|
|
|
|
|
December 3rd, 2011, 12:51 PM
|
#6 | |
|
Regular Crew
Join Date: Sep 2009
Location: Fort Wayne, IN (USA)
Posts: 85
|
Re: If SDHC card is 20mps, and camera is 24mps recording. Hows that working?
Quote:
__________________
Blog |
|
|
|
|
|
December 4th, 2011, 09:01 AM
|
#7 |
|
Inner Circle
Join Date: Dec 2004
Location: Arlington, TX
Posts: 2,231
|
Re: If SDHC card is 20mps, and camera is 24mps recording. Hows that working?
Yeah but 1/10th sounds better! I was rounding to make a point but that is wrong as it is important to get the facts straight.
|
|
|
|
|
December 5th, 2011, 05:04 PM
|
#8 | |
|
Regular Crew
Join Date: Sep 2009
Location: Fort Wayne, IN (USA)
Posts: 85
|
Re: If SDHC card is 20mps, and camera is 24mps recording. Hows that working?
Quote:
__________________
Blog |
|
|
|
|
|
December 5th, 2011, 05:24 PM
|
#9 |
|
Inner Circle
Join Date: Aug 2006
Location: Efland NC, USA
Posts: 2,322
|
Re: If SDHC card is 20mps, and camera is 24mps recording. Hows that working?
The video is played out uncompressed via HDMI. At 1080p24 the data rate is about 100MB/sec (800Mb/sec). The rate of 24Mb/sec is the compressed rate.
__________________
http://www.LandYachtMedia.com |
|
|
|
|
| ||||||
|
||||||
|
|
